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RSTT alloys

Discussion in 'A3/S3 Forum (8L Chassis)' started by Erf, Feb 28, 2013.

  1. Erf
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    Erf Member

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    Hi Guys,

    Might be a dafte question, but...

    I've just agreed to but a set of RSTT's that were being sold in teh classified section, but just noticed the tyre sizes are different. Two are 225 40 18 and the other two are 225 45 18. Is that going to cause me an issue?

    Thanks.
    Last edited: Feb 28, 2013
    #1
  2. Jay A3
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    Jay A3 come fly with me

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    Both sizes look the same to me
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  3. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep

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    yep and to me
    #3
  4. Sidey
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    Sidey Member

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    [​IMG]
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  5. Vex182
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    Vex182 Guess what I drive...

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    Typo in the sizes?
    #5
  6. Jay A3
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    Jay A3 come fly with me

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    i wonder if he meant 235 40 18 or 225 45 18?
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  7. Erf
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    Erf Member

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    Sorry typo! 225 40 18 and 225 45 18!!!!

    Apologies!
    #7
  8. S3-Si
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    S3-Si Member

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    Its been a long day, but I don't see any typo?
    #8
  9. Erf
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    Erf Member

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    I edited the original post to correct the typo.
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  10. Jay A3
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    Jay A3 come fly with me

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    Now all our posts look out of place!
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  11. Routledge
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    Routledge Wind Deflector Trend-setter

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    I thought this.

    It doesn't matter if they have different tyre sizes on the front to the back.. Just as long as they match on the axles.
    #11
  12. Alex C
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    Alex C Active Member

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    that is a ~10cm difference in rolling circumference which is quite a bit. I wouldn't run that.
    #12
  13. Erf
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    Erf Member

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    Buggery...
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  14. .Ben.
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    .Ben. Member

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    Buy some part-worns from eBay in the correct sizes?
    #14
  15. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    different rolling radius from front to rear will cause issues with ESP and haldex... the speed sensors will see the one set of wheels going faster than the others and potentially misinterpret this as wheelspin..

    <tuffty/>
    #15
  16. Erf
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    Erf Member

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    Thanks for all the replies guys. Will stick to stock 17" Avus alloys and get them refurbed.
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  17. Daniel M
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    Daniel M Member

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    Just a quick one related to this, will having say two 225/45/17 tyres and two 205/45/17 tyres cause any problems?
    #17
  18. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    If the rolling radius is different then yes...

    <tuffty/>
    #18
  19. Daniel M
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    Daniel M Member

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    Ah might need some new tyres then as Ive just discovered my rears are wider than the fronts?! (done before I bought the car). Also what would be the correct width tyre for a 17'' RSTT? 225 or 205?
    #19
  20. Alex C
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    Alex C Active Member

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    standard s3 rims are 17" 7.5" wide. -- 225/45
    #20

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