Notices
 
 

  

User Tag List

Thread: 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension

Results 1 to 9 of 9
  1. 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension 
    #1
    Join Date
    Mar 2017
    Location
    New Zealand
    Posts
    28
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    7 Post(s)
    Hi,

    are there any issues with using 285/50/20 tyres instead of 285/45/20 (that size was installed when the car was new) on a Q7 2017 with air suspension apart from some issues with speedo/mileage counter, etc? An Audi dealer just done that, they have replaced a decent but worn out Goodyear tyres with a budget version from Altenzo calling it a future (more comfortable ride due to extra rubber).
     
    0 0 0
     

  2. Re: 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension 
    #2
    Join Date
    Apr 2014
    Location
    SW London / Surrey
    Posts
    1,205
    Post Thanks / Like
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    168 Post(s)
    I wouldn't be happy with that. I reckon that's nearly 4% difference in tyre diameter, when 2-3% is the usual recommended maximum (preferably closer to the 2%...). Could upset the ESP type things in normal driving or when you really need it. I also wouldn't want a brand or even tread on there that I hadn't agreed to. And I wouldn't want it fitted unless within ~£20 all in of what my preferred fitter would do it for.
    ======

    Did this forum help you today? Help make sure it's here next time as well. Just click here to make a suitable donation using PayPal .
     
    0 0 0
     

  3. Re: 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension 
    #3
    Join Date
    Jan 2018
    Location
    Warsaw
    Posts
    243
    Post Thanks / Like
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    65 Post(s)
    Quote Originally Posted by RobertJB View Post
    Hi,

    are there any issues with using 285/50/20 tyres instead of 285/45/20 (that size was installed when the car was new) on a Q7 2017 with air suspension apart from some issues with speedo/mileage counter, etc? An Audi dealer just done that, they have replaced a decent but worn out Goodyear tyres with a budget version from Altenzo calling it a future (more comfortable ride due to extra rubber).
    285/45/20 could be replaced by 255/50/20 but the rims should be more narrow.
    I would not experiment with not standard tyres. Our cars are loaded with sensitive electronics and any deviation from the factory recommendations can fool these systems.
     
    0 0 0
     

  4. Re: 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension 
    #4
    Join Date
    Mar 2017
    Location
    New Zealand
    Posts
    28
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    7 Post(s)
    Thank you for your feedback.

    Personally, I would not do it myself, so it is ever more puzzling why an offical Audi dealer already done it and is selling this "upgrade" as a feature.
     
    0 0 0
     

  5. Re: 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension 
    #5
    Join Date
    Apr 2014
    Location
    SW London / Surrey
    Posts
    1,205
    Post Thanks / Like
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    168 Post(s)
    255/50R20 makes a lot more sense in terms of wheel diameter - is that what you meant? Not good on a 10J / 10.5J rim if that is what you have though.
    ======

    Did this forum help you today? Help make sure it's here next time as well. Just click here to make a suitable donation using PayPal .
     
    0 0 0
     

  6. Re: 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension 
    #6
    Join Date
    Jan 2018
    Location
    Warsaw
    Posts
    243
    Post Thanks / Like
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    65 Post(s)
    Quote Originally Posted by VAG-Abound View Post
    255/50R20 makes a lot more sense in terms of wheel diameter - is that what you meant? Not good on a 10J / 10.5J rim if that is what you have though.
    255/50/20 should be on 8J rims. This combination is delivered originally by Audi as winter wheels.
     
    0 0 0
     

  7. Re: 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension 
    #7
    Join Date
    Mar 2017
    Location
    New Zealand
    Posts
    28
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    7 Post(s)
    The dealer has not changed the rims (9J), so effectively they have removed 285/45/20 (Goodyear F1s) and installed on the same rims 285/50/20 (Altenzo Sport Navigator). The issue is with going from 45 to 50 which is out of spec.
     
    0 0 0
     

  8. Re: 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension 
    #8
    Join Date
    Dec 2020
    Location
    Sherborne
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    I had a similar issue, and found this site a really useful tool Tire Size Comparison . In my case I have the 22" alloys and wanted to see what winter tyre options I had, I've currently have Pirelli Winters, but I feel they're not as good as my old Continental Winter Contacts. In my case I was thinking of changing from 285 35 22 to 275 40 22 as it gave me more tyre options and didn't feel that the very slight difference in width (12mm) would matter on the same rim. The rolling circumfrence would be out by 2.6% but I feel I could live with that and its not likely to upset the car.
    I would be interested if anyone else has run smaller width tyres on any rim, I know there was/is a trend to fit smaller widths on rims, but I have no experience as to how far you can go.
     
    0 0 0
     

  9. Re: 285/50/20 instead of 285/45/20 on Q7 S-line with Air Suspension 
    #9
    Join Date
    Jan 2018
    Location
    Warsaw
    Posts
    243
    Post Thanks / Like
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    65 Post(s)
    Car producers usually recommend not to exceed 2% of rolling circumference of the wheel. IMO up to 3% is still safe but you have to be aware of some differences in the speedometer and odometer readings.
     
    0 0 0
     

Similar Threads

  1. S Line Suspension
    By Airtours in forum Audi A4 - B8 Forum - 2008 - 2015
    Replies: 5
    Last Post: 19-02-2014, 10:21 PM
  2. S-Line suspension
    By Ghostneo in forum Audi A4 - B7 Forum - 2005 - 2008
    Replies: 4
    Last Post: 19-06-2011, 03:41 PM
  3. S Line suspension
    By tdg12 in forum Audi A6 - C6 Forum - 2005 - 2010
    Replies: 11
    Last Post: 13-06-2011, 12:27 PM
  4. S Line suspension vs Sports Suspension - Retro fit
    By scoobmw in forum Audi A4 - B8 Forum - 2008 - 2015
    Replies: 8
    Last Post: 03-10-2010, 09:23 AM
  5. Question S Line Suspension
    By Bigsur in forum Audi A3 - 8P - 2004 - 2012
    Replies: 4
    Last Post: 12-01-2010, 12:43 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


 



  


Disclaimer: VW Audi Forum is an "independant enthusiast website", administered in line with guidelines supplied by VAG in the UK, and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,Porsche or Lamborghini group of Companies. For official up to date information on any of there vehicles, please visit the official websites. Any comments made throughout this website, are the views of the respective poster, and in no way represent the views of the VW Audi Forum Administration, or the worldwide Volkswagen & Audi Group of companies.


VW Audi Forum do not vet and are not responsible for any information which is posted in this forum. All content is viewed and used by you at your own risk and we do not warrant the accuracy or reliability of any of the information.


Copyright: Certain "words", "phrases" and "Images" used on this website by the Administration are "Copyright" of Volkswagen GB, Volkswagen AG (Germany), Audi GB, Audi AG (Germany), Volkswagen Motorsport GB, Volkswagen Motorsport AG (Germany), Audi Motorsport AG (Germany), Volkswagen Racing GB, Bentley, Bugatti, Porsche and Lamborghini. No image can be replicated by anyone WITHOUT the relevant Companies written permission.


All trademarks and copyrights remain property of their respective owners.

No part of the VW Audi Forum website or forum may be reproduced without written permission from the site administration


PLEASE NOTE - PERSONAL ABUSE, ABUSE AGAINST THIS OR ANY OTHER WEBSITE OR ANY COMPANY WILL NOT BE TOLERATED. OFFENDERS WILL BE MODERATED OR EVEN BANNED.


This website and forum are best viewed at a minimum resolution of 1024 by 768.



  



- VW AUDI Forum - The #1 Volkswagen (VW) Group Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - Scania - MAN - Ducatti - VW Audi Forum -


- www.vwaudiforum.co.uk - www.vwaudiforum.co.uk -