Volks AutosMonster Motorsport
Results 1 to 5 of 5

Thread: Tyre Sizes

  1. #1
    Neutral

    Status
    Offline
    Join Date
    Aug 2006
    Location
    Hertfordshire
    Posts
    69

    Tyre Sizes

    Maybe this is a daft question, but I was always under the impression that a quattro set up must have the same tyre sizes all round?

    With the RS3 having a slightly larger profile on the front - 35% of 235mm vs. the rears which have 35% of 225mm I was wondering if this is a problem? If you take a close look at the car from the side, the profile difference in the tyres are quite noticable. I'm guessing Audi have configured the quattro system to handle this variation in tyre sizes, but wondered if anyone knew for sure?

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    Dave Hedgehog's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Apr 2012
    Posts
    270
    quattro has come along way over the years, all versions can easily handle different rolling radius on different corners (different tyre wear)

    haldex being 90% drive to the front most of the time is even more tolerant of differing rolling radius

  4. #3
    jerseypaul's Avatar
    1st Gear

    Status
    Offline
    Join Date
    May 2011
    Location
    Jersey - Channel Isles
    Posts
    242
    Quote Originally Posted by Dave Hedgehog View Post
    quattro has come along way over the years, all versions can easily handle different rolling radius on different corners (different tyre wear)

    haldex being 90% drive to the front most of the time is even more tolerant of differing rolling radius
    You would need to have the same rolling radius on each axle to avoid wind up of the diffs.
    the width of the tyre /wheel combo would be less critical.
    2012 RS3 Daytona grey - VW T5 Transporter 4motion 130 - VW UP!

  5. #4
    Dave Hedgehog's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Apr 2012
    Posts
    270
    Quote Originally Posted by jerseypaul View Post
    You would need to have the same rolling radius on each axle to avoid wind up of the diffs.
    the width of the tyre /wheel combo would be less critical.
    i thought the axel diffs where open on all modern quattro systems and they use the brakes to simulate a diff ?

  6. #5
    jerseypaul's Avatar
    1st Gear

    Status
    Offline
    Join Date
    May 2011
    Location
    Jersey - Channel Isles
    Posts
    242
    Quote Originally Posted by Dave Hedgehog View Post
    i thought the axel diffs where open on all modern quattro systems and they use the brakes to simulate a diff ?
    Not all quattro systems.
    there are still proper Torsen / central diffs in the A4 A5 etc and S / RS variants.
    i now the A3 /TT has longitudinal motor and Haldex set up but I'm surei remember reading in the owners manual re rolling radius requirements.
    2012 RS3 Daytona grey - VW T5 Transporter 4motion 130 - VW UP!

 

 

Similar Threads

  1. Tyre size...
    By imported_vando in forum A3/S3 Forum (8L Chassis)
    Replies: 6
    Last Post: 7th February 2005, 21:44
  2. Standard Tyre Size
    By Speedo in forum A3/S3 Forum (8L Chassis)
    Replies: 4
    Last Post: 17th January 2005, 10:40
  3. i wanna ask about tyre sizes......need help plzzzz
    By One in forum A3/S3 Forum (8L Chassis)
    Replies: 24
    Last Post: 14th November 2004, 21:42
  4. wot tyre sizes can i fit given rim sizes
    By dummi in forum Handling
    Replies: 0
    Last Post: 15th September 2004, 21:37
  5. Correct tyre size
    By TheTonsta in forum A6/S6/Allroad forum (C5 Chassis)
    Replies: 1
    Last Post: 22nd November 2003, 17:18

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO