1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Tyre Pressures

Discussion in 'A4/S4 forum(B5 Chassis)' started by Soupie69uk, Oct 30, 2008.

  1. Soupie69uk
    Offline

    Soupie69uk Owner

    Joined:
    Mar 10, 2004
    Messages:
    2,787
    Likes Received:
    6
    [Oct 30, 2008]
    Hi folks, I was wondering if anyone has had a play about testing different tyre pressures?

    I normally just run the recommended level Audi state but wondered if anyone has found any better pressures.
    #1
  2. Ads

    Ads

    [Sep 18, 2014]

  3. jcb
    Offline

    jcb Active Member VCDS Map User

    Joined:
    Sep 19, 2005
    Messages:
    4,118
    Likes Received:
    13
    [Oct 30, 2008]
    32 back 30 front on michelin pilot sport 235/40 18's
    #2
  4. aragorn
    Offline

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    Joined:
    Jan 30, 2008
    Messages:
    15,570
    Likes Received:
    313
    [Oct 30, 2008]
    that seems a bit low?

    Our fuel flap recons 32/32 for the standard 205/55r16 tyres but craigs S4 recons 35/35 for his standard wheels, i presume because of the lower profile tyres and the heavier car?

    your quattro should probably be on higher pressures than a stock FWD...
    #3
  5. Siena
    Offline

    Siena Active Member

    Joined:
    Oct 28, 2007
    Messages:
    2,626
    Likes Received:
    3
  6. Izzy1
    Offline

    Izzy1 Vorsprung Durch Technik

    Joined:
    Sep 19, 2008
    Messages:
    348
    Likes Received:
    0
    [Oct 30, 2008]

    is that not a little on the high side? also is that pressuse for standard tyres?

    i've got mine at 34 / 34 as recommended by car pressure check thingy.
    #5
  7. 205man
    Offline

    205man Active Member

    Joined:
    May 28, 2006
    Messages:
    1,018
    Likes Received:
    4
    [Oct 30, 2008]
    im running my around the same 42 front and rear thats what i was told by the company that fitted my wheels with 225/40/18
    #6
  8. Siena
    Offline

    Siena Active Member

    Joined:
    Oct 28, 2007
    Messages:
    2,626
    Likes Received:
    3
    [Oct 30, 2008]
    Nope, not too high, perfectly normal.

    [​IMG]
    #7
  9. aragorn
    Offline

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    Joined:
    Jan 30, 2008
    Messages:
    15,570
    Likes Received:
    313
    [Oct 30, 2008]
    where did you get that sticker from Siena? thats not a stock A4/S4 item? Is it an RS4 one?
    #8
  10. Siena
    Offline

    Siena Active Member

    Joined:
    Oct 28, 2007
    Messages:
    2,626
    Likes Received:
    3
    [Oct 30, 2008]
    Ah yes, it's an RS4 sticker.

    I ordered it, fuel grade sticker, along with the in-door barcode stickers, and the airbag replacement stickers, when I was ordering all my RS4 parts pre-surgery.
    #9
  11. ALPINE
    Offline

    ALPINE Yes its diesel, now cry u lost

    Joined:
    Apr 8, 2008
    Messages:
    3,096
    Likes Received:
    2
    [Oct 30, 2008]
    i run 32 all round.
    #10
  12. Oranoco
    Offline

    Oranoco Well-Known Member

    Joined:
    Jul 27, 2007
    Messages:
    3,183
    Likes Received:
    198
    [Oct 30, 2008]
    Snap. Might hae to up mine a little
    #11
  13. jcb
    Offline

    jcb Active Member VCDS Map User

    Joined:
    Sep 19, 2005
    Messages:
    4,118
    Likes Received:
    13
    [Oct 30, 2008]
    skits all over the place at anything over 35psi
    used to run 35 all round, 1psi and I can feel it now
    slightly higher rear pressure give a perfect balance of slight oversteer in conjunction with my coilover settings.


    god knows what 42 would feel like with my coilovers! would have no teeth!
    #12
  14. Fraser
    Offline

    Fraser Member

    Joined:
    Aug 31, 2003
    Messages:
    584
    Likes Received:
    2
    [Oct 30, 2008]
    17s - 36 front 34 back
    18's 38 front 36 back
    #13
  15. andybnwc
    Offline

    andybnwc Member

    Joined:
    Jun 29, 2007
    Messages:
    752
    Likes Received:
    0
    [Oct 30, 2008]
    this is interesting i used to run 42 42 then was told that it was way too high when puchasing new tyres and put them to 34 34
    #14
  16. Izzy1
    Offline

    Izzy1 Vorsprung Durch Technik

    Joined:
    Sep 19, 2008
    Messages:
    348
    Likes Received:
    0
    [Oct 31, 2008]
    #15
  17. Z82
    Offline

    Z82 Member

    Joined:
    Apr 9, 2006
    Messages:
    454
    Likes Received:
    0
    [Oct 31, 2008]
    18 x 225 x 40

    38 all round
    #16
  18. aragorn
    Offline

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    Joined:
    Jan 30, 2008
    Messages:
    15,570
    Likes Received:
    313
    [Oct 31, 2008]
    tbh i'd rather believe the pressures audi recommend over what some guys on a forum have set theirs to. The only thing with that RS4 sticker is the pressures are for 255/35's and the 225/40 pressures are for mud and snow tyres, so perhaps not ideal for a road tyre. Be interesting to look at a B6 A4 which had 225/40's as standard and see what it recommends.

    There is a way to check though, iirc it involves using chalk on the tyre and seeing if it wears off faster on the outside or middle.
    #17
  19. Izzy1
    Offline

    Izzy1 Vorsprung Durch Technik

    Joined:
    Sep 19, 2008
    Messages:
    348
    Likes Received:
    0
    [Oct 31, 2008]
    you willing to try it out? if so let us know of the out come. lol
    #18
  20. Siena
    Offline

    Siena Active Member

    Joined:
    Oct 28, 2007
    Messages:
    2,626
    Likes Received:
    3
    [Oct 31, 2008]
    ragorn, I understand.

    But I'm running the pressures for the 255 tyres.

    The M+S 225's are even higher rated, at 48 / 48.
    #19
  21. Siena
    Offline

    Siena Active Member

    Joined:
    Oct 28, 2007
    Messages:
    2,626
    Likes Received:
    3
    [Oct 31, 2008]
    ragorn, I understand.

    But I'm running the pressures for the 255 tyres.

    The M+S 225's are even higher rated, at 48 / 48.
    #20
  22. aragorn
    Offline

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    Joined:
    Jan 30, 2008
    Messages:
    15,570
    Likes Received:
    313
    [Oct 31, 2008]
    well i'm running 205/55r16's so i doubt thats much help for you...

    Basically you draw a chalk line across the tyre and drive a bit (not sure how far, might only need a few feet, or perhaps a little further) then look at the line. If its worn off at the outside more then its too low, if the middle has worn off its too high. If its all worn off you drove too far ;)
    #21
  23. aragorn
    Offline

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    Joined:
    Jan 30, 2008
    Messages:
    15,570
    Likes Received:
    313
    [Oct 31, 2008]
    your also running the pressures for 255's with the car fully loaded, ie 5 up and a boot full of luggage... driving about yourself should be using the 36/34 setting...?
    #22
  24. Siena
    Offline

    Siena Active Member

    Joined:
    Oct 28, 2007
    Messages:
    2,626
    Likes Received:
    3
    [Oct 31, 2008]
    The fully loaded pressure most of the time, yes.
    Most of the time though, my car has a lot of weight in it.

    The width of the tyres means excessive centre wear due to overinflation is very unlikely to be an issue.

    Underinflation however, will definitely cause problems.
    #23

Share This Page