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Tyre Size Option

Discussion in 'A4/S4 forum(B5 Chassis)' started by TinTin, Nov 13, 2013.

  1. TinTin
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    TinTin New Member

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    #1
  2. jcb
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    jcb Active Member

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    225 is fine on 7.5" wide rim

    slightly lower profile (45% of 225 vs 45% of 235) but nothing you will notice!
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  3. Bradderz_1988
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    Bradderz_1988 Dont replace it, Upgrade it !!

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    225 shouldnt affect the speedo its the 45 profile that will affect it if you swapped to a higher/lower profile on the same size wheel, if you swapped from a 45/17 to a 45/18 you would affect the rolling radius which is why you would fit a 40/18 or 35/18 tyre to compensate the rolling radius !!

    i run 225/45/17 on 8" wide rims !
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  4. crazy88
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    crazy88 Loving the anonymity

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    But the "45" is a percentage of the width. So if your tyres are 225 the profile will be slightly less than 235 width tyres.

    I think 225/45/17 is actually the standard tyre size on the b5 though isn't it? I'm sure I remember having this argument with scottb5 (a nice argument) because my b6 uses 235 as standard, but he said it was 225.
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  5. TinTin
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    TinTin New Member

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    Thanks guys.
    Tyres on the way...just need to get them fitted early next week.
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  6. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    225 45 17 is the correct tyre for a B5, and will fit fine on a 7.5" rim.
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  7. Chriscooke
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    Chriscooke Clueless!

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    As above. I run a 225/40/18 on a 9.5j and even though that is a little stretched its still as safe. Fulken even state that in their fitting guidelines :D
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