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      09-10-2012, 04:27 PM   #22
MaDoNiOn
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Drives: 2008 Bmw 130i E81
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Quote:
Originally Posted by Qbrozen View Post
sidewall height is a percentage of the tire width. When you have narrower tires up front, you have to choose a higher percentage sidewall height to keep the tires the same or similar overall diameter.

So 235/40 = 94mm sidewall height
and 265/35 = 92.75mm

If you went 265/40 in back, it would be 12mm taller than the front.
thankyou,

Never noticed that. i have 215/35 front and back.
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