Audi TT 13 User Manual
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Service
Workshop Manual
Audi 100 1991 ➤ , Audi 80 1992 ➤ ,
Audi A1 2011 ➤ , Audi A2 2001 ➤ ,
Audi A3 1997 ➤ , Audi A3 2004 ➤ ,
Audi A4 1995 ➤ , Audi A4 2001 ➤ ,
Audi A4 2008 ➤ ,
Audi A4 Cabriolet 2003 ➤ ,
Audi A5 Cabriolet 2009 ➤ ,
Audi A5 Coupé 2008 ➤ , Audi A6 1995 ➤ ,
Audi A6 1998 ➤ , Audi A6 2005 ➤ ,
Audi A8 1994 ➤ , Audi A8 2003 ➤ ,
Audi A8 2010 ➤ , Audi Cabriolet 1991 ➤ ,
Audi Q5 2008 ➤ , Audi Q7 2007 ➤ ,
Audi R8 2007 ➤ , Audi TT 1999 ➤ ,
Audi TT 2007 ➤
Wheels and tyres
Edition 02.2010
Service Department. Technical Information
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
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Service
List of Workshop Manual Repair GroupsList of Workshop Manual
Repair GroupsList of Workshop Manual Repair Groups
Re pa ir G ro up
44 - Wheels, tyres, vehicle geometry
Technical information should always be available to the foremen and mechanics, because their
careful and constant adherence to the instructions is essential to ensure vehicle road-worthiness and
safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a
matter of course, be observed.
All rights reserved.
No reproduction without prior agreement from publisher.
Copyright © 2010 Audi AG, Ingolstadt A00ARRA0020
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
Contents
44 - Wheels, tyres, vehicle geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1 Fitting wheels / tyres / tyre pressure monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 General information on wheels and tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Exploded view of components for light alloy wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 Exploded view of components for PAX run-flat tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Instructions for changing/fitting wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 Tightening torques for wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6 Removing and fitting run-flat tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.7 Safety notes for run-flat tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.8 Conditions for fitting run-flat tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.9 Unseating run-flat tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.10 Removing run-flat tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.11 Fitting run-flat tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.12 Exploded view of tyre pressure monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.13 Changing a tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.14 Removing and installing metal valve body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.15 Wheel electronics (TPM) - Beru system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
1.16 Wheel electronics (TPM) - Siemens system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2 Tyre requirements and tyre maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.2 Requirements to be met by tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.3 Factors influencing the service life of a tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.4 Tyre pressure (maintenance) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.5 Driving style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.6 Measuring tread depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.7 Useful information regarding tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.8 Identification markings on the tyre sidewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.9 Designations on sidewall of tyres with run-flat system (PAX) . . . . . . . . . . . . . . . . . . . . . . 28
2.10 Speed rating / maximum speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.11 Load rating code/load index (LI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.12 The valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.13 Tyre storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.14 Storing the tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.15 Tyre ageing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.16 Renewing tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.17 Care and maintenance of alloy wheel rims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
2.18 Tyres with rim protectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3 Tyre wear/ mileage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.1 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.2 Wear of high-speed tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.3 Evenly worn tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.4 One-sided wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.5 One-sided wear – adjustment error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.6 Wear in middle of tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.7 Diagonal erosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.8 SA 18 - Wear; SA 11 - Adjustment error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.9 Running gear modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4 Tyre noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.1 General notes on tyre noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.2 Useful information regarding tyre noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.3 Saw-tooth wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.4 Flat spots (brake-flatting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Contents i
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with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
5 Rough running caused by wheels/tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.1 Causes of rough running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.2 Flat spots caused by storage or handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6 Balancing wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.1 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.2 Conducting a road test before balancing wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.3 Balancing wheels on stationary wheel balancing machine . . . . . . . . . . . . . . . . . . . . . . . . 45
6.4 Work sequence when balancing wheels and tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.5 Finish balancer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.6 Vibration control system VAS 6230 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.7 Radial and lateral run-out on wheels and tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.8 Checking radial and lateral run-out of wheels and tyres on V.A.G 1435 . . . . . . . . . . . . . . 49
6.9 Checking radial and lateral run-out on wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.10 Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7 Vehicle pulls to one side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.1 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.2 Remedies when vehicle pulls to one side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.3 Strategic rotation of wheels for non-directional tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.4 Strategic rotation of wheels for unidirectional tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8 Tyre damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.1 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.2 Checking tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.3 Construction of belted radial tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.4 Torn tread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.5 Radial depressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.6 Impact damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.7 Cuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.8 Damage caused by foreign bodies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.9 Loss of air from tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.10 Damage occurring when fitting tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.11 Bead damage caused by fitting machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.12 Tyre pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.13 Tyre damage due to insufficient inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.14 Slow loss of tyre pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.15 Temperature increase caused by insufficient inflation pressure . . . . . . . . . . . . . . . . . . . . 64
8.16 Tears in tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
9 Vehicles with breakdown set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.1 Tyre sealant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.2 Removing a tyre from the rim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.3 Disposal of sealant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.4 Fitting a new tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10 Tyre pressure monitoring systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10.1 Tyre pressure monitoring system with pressure sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10.2 Tyre pressure monitoring with wheel speed sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11 Temporary spare wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11.1 Notes on the use of temporary spare wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
12 Tyres with run-flat capability (PAX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
12.1 Construction of tyres with run-flat capability (PAX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
12.2 Codes and designations on tyres with run-flat capability (PAX) . . . . . . . . . . . . . . . . . . . . . . 72
12.3 Support ring on PAX wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12.4 Dimensions and designations for PAX rims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
12.5 Inflating tyres on PAX wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
12.6 Wheel alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
12.7 Repairing tyres with run-flat capability (PAX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
ii Contents
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
12.8 PAX tyres - assessing condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
12.9 Checking support ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
13 Self supporting tyres (SST) with run-flat capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
13.1 Design of an SST tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
13.2 Servicing tyres with run-flat capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
13.3 Renewing tyres/conditions for use of run-flat tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Contents iii
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
iv Contents
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
44 – Wheels, tyres, vehicle geometry
1 Fitting wheels / tyres / tyre pressure
monitor
1.1 General information on wheels and tyres
The factory recommends using tyres of the same make, design
and tread pattern on all wheels.
Always renew the rubber valve when fitting a new wheel rim or
tyre.
Tyres are to be fitted with DOT mark facing outer side of wheel.
For tyres with directional tread pattern, this only applies to left side
of vehicle.
If the vehicle is fitted with tyres with a directional tread pattern,
the spare wheel should have a wheel/tyre combination for the
right-hand side of the vehicle.
1.2 Exploded view of components for light alloy wheels
Overview of light alloy wheel
Wheel change/wheel fitting instructions ⇒ page 4
1. Fitting wheels / tyres / tyre pressure monitor 1
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with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
1 - Tyre
2 - Valve
❑ Always renew
❑ Use only correct valves
as specified in ⇒ ETKA
3 - Wheel
❑ Observe the fitting in‐
structions ⇒ page 4
4 - Wheel bolt
❑ Observe the fitting in‐
structions ⇒ page 4
❑ Tightening torques for
wheel bolts
⇒ page 9
❑ Anti-theft wheel bolt
⇒ page 2
5 - Adapter for wheel bolt
❑ Attach to corresponding
wheel bolt ⇒ page 2
6 - Cap for wheel bolts
7 - Trim cap
8 - Wheel bolt
❑ Observe the fitting in‐
structions ⇒ page 4
❑ Tightening torques for
wheel bolts
⇒ page 9
9 - Adhesive balancing weights
❑ Not more than 60 g per‐
mitted per rim flange
❑ Remove dirt and grease
from wheel rim at bonding point
❑ Pull off backing foil
❑ Bond on balancing weights at surfaces provided for this purpose
Anti-theft wheel bolt
1 - Anti-theft wheel bolt
2 - Cover cap
3 - Adapter for wheel bolt
2 Rep. Gr.44 - Wheels, tyres, vehicle geometry
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
1.3 Exploded view of components for PAX run-flat tyres
1 - PAX tyre
2 - Support ring
3 - Wheel for PAX tyre
❑ Observe the fitting in‐
structions ⇒ page 4
4 - Wheel electronics
❑ All batteries must be re‐
newed together
❑ Remaining service life,
temperature and infla‐
tion pressure can be
read out via diagnosis
function with vehicle di‐
agnostic, testing and in‐
formation system VAS 5051-
5 - Metal valve body
❑ Use only correct valves
as specified in ⇒ ETKA
❑ Supplied as complete
unit
6 - Wheel bolt
❑ Observe the fitting in‐
structions ⇒ page 4
❑ Tightening torque for
wheel bolts
⇒ page 9
❑ Anti-theft wheel bolt
⇒ page 2
7 - Adapter for wheel bolt
❑ Attach to corresponding
wheel bolt ⇒ page 2
8 - Cap
❑ Attach to wheel bolt
9 - Two-piece wheel bolt
❑ Observe the fitting instructions ⇒ page 4
❑ Tightening torques for wheel bolts ⇒ page 9
10 - Trim cap
11 - Cap for wheel bolts
12 - Adhesive balancing weights
❑ Not more than 60 g permitted per rim
❑ Remove dirt and grease from wheel rim at bonding point
❑ Pull off backing foil
❑ Bond on balancing weights at surfaces provided for this purpose
1. Fitting wheels / tyres / tyre pressure monitor 3
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
1.4 Instructions for changing/fitting wheels
Note
The width across flats of the wheel bolt adapter supplied with the
vehicle can differ from that of the adapter in the workshop adapter
set.
Special tools and workshop equipment required
♦ Torque wrench -V.A.G 1332-
♦ Adapter set for tamper-proof wheel bolts -T10101-
♦ Adapter set for tamper-proof wheel bolts -T10101 A-
♦ Adapter set for tamper-proof wheel bolts -T40004-
4 Rep. Gr.44 - Wheels, tyres, vehicle geometry
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
♦ Adapter set for tamper-proof wheel bolts -T40073-
♦ Wax spray -D 322 000 A2-
♦ Optimol TA paste -G 052 109 A2-
Wheel change
Caution
On vehicles with ceramic brakes the wheel must not be allowed
to drop onto the brake disc. This would cause irreparable dam‐
age to the disc. When removing or fitting a wheel, screw the
long assembly pin into the top wheel bolt hole (12 o'clock po‐
sition) in place of the wheel bolt, and screw the short pin into
one of the other holes to support the wheel. The wheel can then
slide along the assembly pins when fitting or removing it.
Wheels and tyres - Edition 02.2010
Note
♦
Raise vehicle only at jacking points provided.
♦
Do not use screwdriver to pry off trim caps on vehicles with
light-alloy wheels; always use special tool provided (puller
from vehicle tool kit).
♦
To slacken off wheel bolts, always use socket attachments of
the correct size. Worn socket attachments must not be reused.
♦
Do not use impact wrenches for slackening off anti-theft wheel
bolts (lockable wheel bolts).
♦
Take care to keep wheel bolts clean.
DANGER!
Perform the checks and follow the instructions listed below.
This is important to ensure that the wheel bolts and the wheels
are properly secured.
Perform the following steps with the wheel rim removed.
1. Fitting wheels / tyres / tyre pressure monitor 5
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with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
– Check that contact surfaces -arrows- on brake disc/wheel hub
or brake disc/brake drum and wheel (rim) are free of corrosion
and dirt.
– Remove any oil, grease and corrosion.
– Check that centring flange on wheel hub -arrow- is free of cor‐
rosion and dirt.
– Check that contact surfaces -arrow- on inside of wheel rim and
centring seat in rim are free of corrosion and dirt.
6 Rep. Gr.44 - Wheels, tyres, vehicle geometry
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
– The convex seats in the holes for the wheel bolts on the rim
must be free of corrosion, dirt, oil and grease.
– Remove any oil, grease, dirt and corrosion and apply wax
spray -D 322 000 A2- around centring hole/flange to ensure
corrosion protection.
Note
♦
The wax spray must not come into contact with brake system
components.
♦
Any rust or dirt which drops between brake disc and wheel hub
on removal should be blown out with compressed air.
DANGER!
Wear safety goggles when working with compressed air.
The convex seats for the wheel bolts in the wheel rim and the
shoulders on the wheel bolts must be free from dirt and corrosion.
– If necessary, clean the seats for the wheel bolts in the rim using
a clean, lint-free cloth.
Wheels and tyres - Edition 02.2010
– Check that the wheel bolts and the threads in the wheel hub
are clean.
– Use a brass wire brush or similar to remove any dirt from the
shoulder and threads of the wheel bolts.
WARNING
Damaged or badly corroded wheel bolts must be renewed.
1. Fitting wheels / tyres / tyre pressure monitor 7
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
If lightly corroded wheel bolts are re-installed on the vehicle, clean
the threads and the shoulders on the bolt heads and grease the
surfaces in sliding contact using Optimol TA paste -G 052 109 A2as follows (all vehicles except RS 2 and RS 4, Type 8D):
A - One-piece wheel bolt. Lightly grease thread -2- and shoulder
-1-.
B - Two-piece wheel bolt. Lightly grease thread -3-, and area be‐
tween bolt head contact surface -6- and back of convex washer
-5-. Do not apply grease to the convex surface -4- that bears
against the wheel rim.
Note
Use only Optimol TA paste -G 052 109 A2- . The paste must not
come into contact with parts of the brake system.
Only for RS 2 and RS 4 (Type 8D):
• Slightly corroded wheel bolts are not to be cleaned and
greased. They must always be renewed.
• Wheel bolts are always to be screwed in without grease.
All vehicles (continued):
– Check that wheel bolts can be screwed in easily by hand with‐
out using tools. When fitting the wheel, the bolts should screw
in easily over the full length of the threads.
– Make sure the holes in the hub align. The thread of the wheel
bolts must not contact the bore in the brake disc.
– If the thread of the wheel bolt touches the hole, turn the brake
disc relative to the wheel hub accordingly.
Fitting wheels:
♦ Position wheel on wheel hub and secure by hand with two op‐
posing wheel bolts.
♦ Screw in remaining wheel bolts by hand. They should screw
in easily. Make sure the bores are exactly centralised.
♦ If necessary lift the wheel slightly and tighten two wheel bolts
lightly by hand.
♦ When fitting the wheel, screw in all wheel bolts uniformly by
hand.
♦ Tighten the wheel bolts diagonally using, for example, a four-
arm wheel nut wrench, to about 30 Nm.
WARNING
Do not use an impact wrench to screw in the wheel bolts.
8 Rep. Gr.44 - Wheels, tyres, vehicle geometry
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
– If necessary, take the weight off the wheel by lifting it slightly.
– Lower vehicle to floor and tighten all wheel bolts in diagonal
sequence to final specified torque ⇒ page 9 .
– Lower vehicle onto its wheels. ⇒ Running gear, front-wheel
drive and four-wheel drive; Rep. Gr. 44 ; Wheels, tyres, vehi‐
cle geometry
1.5 Tightening torques for wheel bolts
Model Type Tightening torque
RS 2 895 130 Nm
RS 4 8D 140 Nm
A1 8X 120 Nm
A2 8Z 120 Nm
A3 8P 120 Nm
S3 8P 120 Nm
A3 Cabriolet 8P 120 Nm
A4 8E 120 Nm
S4 8E 120 Nm
RS 4 8E 120 Nm
A4 B8 8K 120 Nm
S4 B8 8K 120 Nm
A4 allroad 8K 120 Nm
RS 4 B8 8K 120 Nm
A5 Coupé 8T 120 Nm
S5 Coupé 8T 120 Nm
A5 Sportback 8T 120 Nm
A5 Cabriolet 8F 120 Nm
S5 Cabriolet 8F 120 Nm
A6 4B / 4F 120 Nm
A6 allroad 4B / 4F 120 Nm
S6 4B / 4F 120 Nm
RS 6 4B / 4F 120 Nm
A8 4D / 4E / 4H 120 Nm
TT 8N / 8J 120 Nm
R8 42 120 Nm
Q5 8R 140 Nm
Q7 4L 160 Nm
Q7 - 12-cylinder 4L 160 Nm
PAX wheels, A6 4B / 4F 120 Nm
PAX wheels, A8 4D / 4E / 4H 140 Nm
A6 (Security) 4B / 4F 120 Nm
A8 (Security) 4D / 4E / 4H 140 Nm
All other Audi models
120 Nm
Wheels and tyres - Edition 02.2010
1. Fitting wheels / tyres / tyre pressure monitor 9
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
1.6 Removing and fitting run-flat tyres
Safety notes for run-flat tyres ⇒ page 10
Conditions for fitting run-flat tyres ⇒ page 10
Unseating run-flat tyres ⇒ page 12
Removing run-flat tyres ⇒ page 12
Fitting run-flat tyres ⇒ page 14
1.7 Safety notes for run-flat tyres
• Run-flat tyres must be installed and/or removed by specially
trained mechanics.
• The required special tools must be undamaged and in perfect
working order. For information on suitable additional tools and
materials, please contact the manufacturer of your tyre fitting
unit directly. For listed tyre fitting units with VAS numbers, the
additional tools and materials are available as recommended
accessories.
• Where applicable, use the assembly paste recommended by
the tyre manufacturer.
• The description of the procedures for removing and fitting tyres
may vary depending on the equipment manufacturer and type
of unit.
• The basic procedures for removing and fitting run-flat tyres are
described below. Before starting work on a tyre, it is important
to establish whether it is likely to be a run-flat tyre, and to follow
the correct procedures when removing or fitting it.
• You can identify run-flat tyres from any of the following abbre‐
viations: DSST, Euforia, RFT, ROF, RSC, SSR or ZP. These
abbreviations are located on the sidewall after the tyre desig‐
nation.
• Please always observe the instructions and warnings in the
following description.
• Check whether the tyre pressure sensor has to be renewed (if
fitted) ⇒ Vehicle diagnosis, testing and information system
VAS 5051.
Note
♦
Ensure that the tyre does not come into contact with the tyre
pressure sensor during removal and fitting work.
♦
When cleaning the wheel rim, the tyre pressure sensor must
not be allowed to come into contact with water and must not
be blown out with compressed air.
1.8 Conditions for fitting run-flat tyres
Allowing cold tyres to warm up to minimum fitting temperature
Note
This procedure also applies to ultra high performance tyres
(height/width ratio 45 % or less and speed symbol V or higher).
10 Rep. Gr.44 - Wheels, tyres, vehicle geometry
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
WARNING
The fitting temperature of a tyre must not be less than 15 °C
and must not exceed 30 °C at the core.
• To prevent injury when fitting the tyre, the temperature of the
tyre (in particular the temperature of the upper sidewall and
upper bead inside the tyre) must be at least 15 °C.
• This internal temperature is referred to as the core tempera‐
ture.
• Since rubber is a poor heat conductor, a cold tyre must be
stored in a temperate environment until the internal rubber
layers have warmed up to at least 15 °C.
• The surface temperature of the tyre during the warm-up phase
is not indicative of the internal temperature.
• The quickest way for the tyres to absorb heat from the ambient
air is to allow the warm air to circulate around them freely. For
this purpose, they should be stored separately and NOT
stacked.
• Never use a heater or hot air blower to warm up the tyres, as
critical surface temperatures can build up extremely quickly.
• There is no way to heat the tyres without damaging them other
than using warm water or warm ambient air (max. 50 °C).
• If cold tyres (below 0 °C) are brought into a warm environment
(above 0 °C), a layer of frost will immediately form on the sur‐
face of the tyre. This layer of frost, which forms from the
condensation of moisture in the air, is a sign that the tyre is
rapidly absorbing heat from the ambient surroundings.
• When the layer of frost has thawed completely leaving a film
of condensate, you should wipe the tyre dry with a cloth to
prevent the evaporative cooling effect from slowing down the
warm-up process.
Warm-up times:
Wheels and tyres - Edition 02.2010
♦ Assuming a minimum room temperature of 19 °C and a tyre
temperature of 0 °C or higher, the tyre should be stored for at
least 2 hours.
♦ Assuming a minimum room temperature of 19 °C and a tyre
temperature of below 0 °C, the tyre should be stored for at
least 2.5 hours.
Recommendations for warm-up:
♦ Make it part of your routine job preparation to store the tyres
in the workshop 1 day before fitting them (if possible).
♦ Store the tyres as high up as possible on an insulated surface,
such as a wood pallet or similar.
♦ Keep the tyres separate so that the warm air can circulate
around them freely.
♦ Wipe off condensate.
♦ Never use a heater or hot air blower to warm up the tyres.
1. Fitting wheels / tyres / tyre pressure monitor 11
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
1.9 Unseating run-flat tyres
Caution
♦ Observe safety notes ⇒ page 10
– Release air from tyre by unscrewing nickel-plated valve core.
– When using a tyre fitting machine with bead breaker to unseat
the tyre, always make sure that the tyre valve/ tyre pressure
sensor -arrow- is on the opposite side to the bead breaker
-1-.
Apply the bead breaker not more than 2 cm away from the wheel
flange.
– Remove balancing weights and coarse dirt from wheel.
– Unseat both tyre beads all round and apply a generous
amount of tyre fitting lubricant between tyre and wheel flange
-arrow-.
1.10 Removing run-flat tyres
Caution
♦ Observe safety notes ⇒ page 10
12 Rep. Gr.44 - Wheels, tyres, vehicle geometry
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
– Turn wheel on tyre fitting unit so that tyre valve/ tyre pressure
sensor -2- is in front of head of fitting unit -1-.
Caution
Maintain clearance -a- between head of fitting unit -1- and tyre
valve/tyre pressure sensor; otherwise the head will damage
the tyre pressure sensor .
– Position head of fitting unit -1- close to tyre valve/ tyre pressure
sensor so that tyre iron can be applied approx. 30° away from
tyre valve/ tyre pressure sensor -2-.
– Attach retainers -3- to wheel on opposite side to head of fitting
unit -1-.
– Now use tyre iron to lever bead over finger on head of fitting
unit. Remove tyre iron after doing so.
– Run tyre fitting unit in clockwise direction until upper bead is
completely over wheel flange.
Retainers -1- will be pushed against head of fitting unit. They can
then be easily removed.
Wheels and tyres - Edition 02.2010
– Turn wheel on tyre fitting unit so that tyre valve/ tyre pressure
sensor -2- is in front of head of fitting unit -1-.
Caution
Maintain clearance -a- between head of fitting unit -1- and tyre
valve/tyre pressure sensor; otherwise the head will damage
the tyre pressure sensor .
– Position head of fitting unit -1- close to tyre valve/ tyre pressure
sensor so that tyre iron can be applied approx. 30° away from
tyre valve/ tyre pressure sensor -2-.
– Now use tyre iron -3- to lever bead over finger on head of fitting
unit.
– Apply an additional plastic lever -4-.
– Remove tyre iron -3- again.
1. Fitting wheels / tyres / tyre pressure monitor 13
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
– Use plastic lever -1- to hold bead over wheel flange from out‐
side and run tyre fitting unit in clockwise direction until tyre has
been pulled completely off wheel flange.
Note
♦
Check tyre pressure sensor for loose or damaged parts. If
screw-on connections are loose, replace union nut, valve core,
seal, sealing washer and valve cap with new parts from repair
kit ⇒ Electronic parts catalogue “ETKA” .
♦
If tyre pressure sensor is damaged, renew it completely.
1.11 Fitting run-flat tyres
Caution
♦ Note conditions for minimum fitting temperature
⇒ page 10
♦ Observe safety notes ⇒ page 10
– Apply a generous amount of tyre fitting lubricant to wheel
flanges, tyre beads and area inside upper tyre beads.
– Turn wheel on tyre fitting unit so that tyre valve/ tyre pressure
sensor -1- is on opposite side to head of fitting unit -2-.
– Run tyre fitting unit in clockwise direction.
– Stop fitting lower bead before tyre valve/ tyre pressure sensor
-arrow- reaches tool; otherwise tyre pressure sensor will be
damaged.
Tyre bead will now slip over wheel flange. Make sure that tyre
fitting unit stops turning wheel before tyre valve/ tyre pressure
sensor -arrow- reaches head of fitting unit.
14 Rep. Gr.44 - Wheels, tyres, vehicle geometry
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
– Turn wheel on tyre fitting unit so that tyre valve/ tyre pressure
sensor -1- is on opposite side to head of fitting unit -2-.
– Attach retainers -3- to wheel.
– Ensure that tyre bead is seated correctly on head of fitting unit
and run tyre fitting unit in clockwise direction.
– Stop fitting upper bead before tyre valve/ tyre pressure sensor
-arrow- reaches tool; otherwise tyre pressure sensor will be
damaged.
Tyre bead will now slip over wheel flange. Make sure that tyre
fitting unit stops turning wheel before tyre valve/ tyre pressure
sensor -arrow- reaches head of fitting unit.
– Remove retainers from wheel flange.
– Inflate tyre to max. 3.3 bar (bead seating pressure).
Caution
Wheels and tyres - Edition 02.2010
Do not continue inflating the tyre if the beads do not make full
contact at the edge of the wheel.
The tyre or wheel will otherwise be damaged.
– If tyre beads do not make full contact at edge of wheel, release
air from tyre, press off tyre bead again and apply another gen‐
erous coating of tyre fitting lubricant to wheel flange.
– Inflate tyre to max. 3.3 bar (bead seating pressure).
– Once tyre beads have made proper contact with bead seats,
increase inflation pressure to 4 bar to seat the tyre.
– Screw in a new nickel-plated valve core and inflate tyre to
specified pressure.
– Then balance the wheel.
– Fit wheel to vehicle and tighten to specified torque.
1.12 Exploded view of tyre pressure monitor
Wheel electronics (Beru system) ⇒ page 20
Wheel electronics (Siemens system) ⇒ page 21
Direct measuring systems according to vehicle type
⇒ page 18
Indirect measuring systems according to vehicle type
⇒ page 18
1. Fitting wheels / tyres / tyre pressure monitor 15
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
Note
The marking on the wheel electronics indicates which system is
installed.
1 - Metal valve body
❑ Use only correct valves
as specified in ⇒ ETKA
❑ Supplied as complete
unit
❑ Always renew valve
core when changing
tyre
❑ Removing and installing
⇒ page 18
2 - Valve core
3 - Seal
❑ Removing and installing
⇒ page 18
Note
4 - Rim
❑ All models: 4 Nm
❑ Removing and fitting
tyre ⇒ page 17
Removing run-flat tyres
⇒ page 12
5 - Wheel electronics
❑ All batteries must be re‐
newed together
❑ Remaining service life,
temperature and infla‐
tion pressure can be
read out via diagnosis
function with vehicle di‐
agnostic, testing and in‐
formation system VAS 5051B- or -
VAS 5052❑ Installing wheel electronics (Beru system) ⇒ page 20
❑ Installing wheel electronics (Siemens system) ⇒ page 21
Note
WARNING
After using tyre sealant,
the wheel electronics on
the affected wheel must
be renewed.
16 Rep. Gr.44 - Wheels, tyres, vehicle geometry
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
WARNING
The wheel electronics
must be renewed if dam‐
aged.
6 - Micro-encapsulated bolt
Note
All models: 4 Nm
❑ Renew bolt
❑ Replacement part only available together with wheel electronics
❑
7 - Union nut
❑ Removing and installing ⇒ page 18
❑ Tightening torque ⇒ page 18
8 - Chamfered washer
Wheels and tyres - Edition 02.2010
1.13 Changing a tyre
The valve core must always be renewed if a tyre is changed.
The metal valve and the wheel electronics can be reused.
– Release air from tyre by unscrewing nickel-plated valve core.
– Remove tyre ⇒ page 17
Removing run-flat tyres ⇒ page 12
– Perform visual inspection to check for loose or damaged com‐
ponents. Renew complete valve assembly if attachment points
are loosened/detached.
Note
Always renew damaged wheel electronics.
Removing tyre
Roll off or unseat tyre.
When using an unseating tool, first press off the tyre on the side
opposite the valve.
Unseating tools must not be used in hatched area -a-.
– Position head of installing tool close to valve so that tyre iron
can be applied approx. 30° -b- away from valve.
– Then pull off the tyre in the valve area first.
Fitting run-flat tyres ⇒ page 14
1. Fitting wheels / tyres / tyre pressure monitor 17
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Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
Fitting tyre
Unseating tools must not be used in valve area.
– Position wheel electronics approx. 180° opposite head of in‐
stalling tool.
– Press tyre into well base approx. 90° in front of installing tool
-arrow-.
– Screw in new nickel-plated valve core.
– Fit tyre.
– Inflate tyre and screw plastic cap back on.
– Balance tyre.
– Fit wheel.
1.14 Removing and installing metal valve body
Special tools and workshop equipment required
♦ Torque wrench -V.A.G 1410- and tool insert -V.A.G 1331-
(11 mm)
– Push metal valve with rubber seal through the rim from the
inside.
– Fit the chamfered washer and union nut from outside and
screw in by hand.
– Tighten union nut.
Tightening torque of union nut
Model,
System Country Nm
type
A8, 4D Direct measurement,
A8, 4E Direct measurement,
A6, 4B Direct measurement,
A6, 4F Direct measurement,
RS 6, 4F Direct measurement,
Q7, 4L Direct measurement,
Q7, 4L -
Direct measurement,
12-cylin‐
Beru
Beru
Beru
Beru
Beru
Beru
Beru
1)
1)
1)
1)
1)
1)
1)
USA and Rest of
World
USA and Rest of
World
USA and Rest of
World
USA and Rest of
World
USA and Rest of
World
USA and Rest of
World
USA and Rest of
World
4 Nm
4 Nm
4 Nm
4 Nm
6 Nm
4 Nm
4 Nm
der
18 Rep. Gr.44 - Wheels, tyres, vehicle geometry
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
Model,
System Country Nm
type
R8, 42 Direct measurement,
TT, 8J Direct measurement,
Siemens
TT, 8J
Indirect measurement
A3, 8P Direct measurement,
Siemens
A3, 8P
Indirect measurement
A4, 8E Direct measurement,
A4, 8K Direct measurement,
Siemens
A4, 8K
Indirect measurement
A5, 8T Direct measurement,
Siemens
A5, 8T
Indirect measurement
S5, 8T Direct measurement,
Siemens
S5, 8T
A5 Cab‐
riolet, 8F
A5 Cab‐
Indirect measurement
Direct measurement,
Siemens
Indirect measurement
riolet, 8F
Q5, 8R Direct measurement,
Siemens
Q5, 8R
Indirect measurement
1)
Beru
1)
1)
1)
Beru
1)
1)
1)
1)
1)
USA and Rest of
World
USA 8 Nm
2)
Rest of World ------
USA 8 Nm
3)
Rest of World ------
USA and Rest of
World
USA 8 Nm
2)
Rest of World ------
USA 8 Nm
2)
Rest of World ------
USA 8 Nm
2)
Rest of World ------
USA 8 Nm
2)
Rest of World ------
USA 8 Nm
2)
Rest of World ------
6 Nm
4 Nm
All other models: 4 Nm
1) Tyre pressure monitoring (TPM): direct measurement. Wheel electronics fitted
at metal valve on wheel; values for pressure and temperature periodically trans‐
mitted to vehicle and evaluated.
2) Tyre monitor display (TMD+): indirect measurement. No electronic components
installed in wheel. Rolling circumference and vibration characteristics of the indi‐
vidual wheels are compared by analysing signals from ABS sensors. A loss of tyre
pressure is diagnosed indirectly. The speed and vibration characteristics of the
wheel change in the event of a drop in the inflation pressure.
3) Tyre monitor display (TMD): indirect measurement. No electronic components
installed in wheel. Rolling circumference of the individual wheels is compared by
analysing signals from ABS sensors. A loss of tyre pressure is diagnosed indi‐
rectly. The speed of the wheel changes in the event of a drop in the inflation
pressure.
1. Fitting wheels / tyres / tyre pressure monitor 19
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheels and tyres - Edition 02.2010
– Use a suitable tool -1- (e.g. ∅ 2 mm drill bit) to prevent turning.
1.15 Wheel electronics (TPM) - Beru system
View of Beru system
WARNING
After using tyre sealant, the wheel electronics on the affected
wheel must be renewed.
WARNING
The wheel electronics must be renewed if damaged.
– Press wheel electronics -1- against base of rim.
– Working from behind valve, secure wheel electronics to valve
using micro-encapsulated bolt ⇒ Item 6 (page 17) .
Note
♦
Tighten micro-encapsulated bolt to 4 Nm on all models.
♦
Renew micro-encapsulated bolt.
Special tools and workshop equipment required
20 Rep. Gr.44 - Wheels, tyres, vehicle geometry
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