Technical Service Bulletin
40 Chattering/skipping sensation in front axle on tight turns
40 23 61 2017148/13 June 8, 2023. Supersedes Technical Service Bulletin Group 40 number 22-35 dated March
16, 2022, for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

All

Not Applicable

2008 – 2012
2014 – 2015

R8

2017 – 2018
2020 – 2024
2011 – 2012

R8 Spyder

2014 – 2015
2017 – 2018
2020 – 2024

Condition
REVISION HISTORY
Revision Date

Purpose

13

-

Revised header (Added model year)

12

03/16/2022 Revised header (Added model year)

11

06/26/2020 Revised header (Added model year)

Customer states:
A chattering/skipping sensation is felt in the front axle during tight, slow-speed turns (such as parking maneuvers)
could occur under the following conditions:
• Tires are cold or ambient temperatures are low.
• Road surface is wet/dirty.
• The vehicle has been parked for an extended period of time.

Technical Background
The R8 has the steering dynamic of a sports car. The inner and outer wheels are turned at approximately the
same steering angle to ensure even power distribution through the front self-locking differential during high speed
cornering. This steering dynamic minimizes understeer and ensures vehicle stability in high-speed turns.

Page 1 of 2
© 2023 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights
of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a
retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without
the prior expressed written permission of the publisher.

Technical Service Bulletin
Under normal conditions, when the vehicle is maneuvered through tight turns at slow speeds (such as while
parking), the steering angle difference between the inner and outer wheel is not noticeable because the side wall
flex of the tire is sufficient to compensate. Contact with the road surface is maintained.
However, under certain conditions (such as cold weather, wet/dirty pavement, or a long parking period), a front
tire can scrub. The customer may report a shudder or a skipping sensation felt in the steering/front suspension of
the vehicle during slow-speed parking maneuvers.
This is normal performance for the sports car steering dynamic in the R8, and no repairs are required.

Production Solution
Not Applicable

Service
Explain the technical background to the customer.

Warranty
This TSB is informational only and not applicable to any Audi warranty.

Additional Information
All parts and service references provided in this TSB (2017148) are subject to change and/or removal. Always
check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the
Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©2023 Audi of America, Inc. All rights reserved. The information contained in this document is based on the
latest information available at the time of printing and is subject to the copyright and other intellectual property
rights of Audi of America, Inc., its affiliated companies, and its licensors. All rights are reserved to make changes
at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Page 2 of 2
© 2023 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights
of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a
retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without
the prior expressed written permission of the publisher.