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      08-08-2010, 07:48 AM   #172
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Drives: 2004 M3
Join Date: Feb 2009
Location: St. Paul, MN

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another fitment question for Tirerack crew


I have a set of Dunlop Wintersport 3Ds from my 2002 911 Turbo in sizes 225/40x18 Front and 265/35x18 Rears. Can I use the 3Ds on my 2009 M3 sedan? I have 18" aftermarket rims 8.5" Front and 9.5" wide rear.

I know stock size for the M3 is 245/40x18 and 265/40x18 so the rear aspect ratio is 35 instead of 40. Will that make a difference in performance in the wet and dry? How about if I use the 265/35x18 tires that I have in the rear and get 2 - 245/40x18 or 235/40x18 3Ds for the front? The 225s seem kind of narrow.

Or do I go with 235/40x18 all around as BMW recommends?

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