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      01-22-2013, 01:11 PM   #9
skiborsy
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Drives: 2011 Le Mans Blue E90 M3
Join Date: Jul 2008
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Quote:
Originally Posted by pbonsalb View Post
I thought that 265/35 and 285/35 were closest to stock diameter and front/rear difference (for traction control purposes) on 18 inch wheels? I am planning on buying those sizes in the spring for my 18 x 9.5 and 10.5 wheels.
245/40 (stock): 25.71"
265/35: 25.3" (-1.6% diameter)
275/35: 25.57" (-.55% diameter)
255/40: 26.03" (+1.23% diameter)

265/40 (stock): 26.34"
275/35: 25.57" (-2.93% diameter)
285/35: 25.85" (-1.87% diameter)
295/35: 26.12" (-.84% diameter)
275/40: 26.66" (+1.21% diameter)
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