Thread: Does the X5M brakes fit to X5 4.8i?
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Old 08-15-2012, 01:07 PM
ard ard is offline
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Quote:
Originally Posted by Thunder22 View Post
Race teams also did it to get a bigger contact patch.
??

I've always thought that contact patch was diameter and width. PROFILE doesnt impact patch statically. Yes, going to wider rims REQUIRES lower profiles to maintain the overall diameter. But a 29" outer diameter wheel that is 10" of tread width on an 18" rim with 50 profile will be the same contact patch (more or less) when compared to a 29" outer diameter on a 22" rim with the same 10" tread width and now a 25 profile. (So just chaning sidewall height will not increase patch.)

Dynamically, lower profile tires will HURT the contact patch.
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