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Old 05-23-2007, 07:48 PM   #53
Mungo
 
Drives: trans am
Join Date: Jul 2006
Location: suffolk
Posts: 362
For those who are worried ( Moose) that the gap between the wheel well and the tire will be bigger if they use samller rims..don't worry. Look tires on the concept are 275/30 R 21's and 305/30 R22's. Convert millimeters of the tire tread by multiplying by .03937. The side wall is a percentage of the tread. Soo.. a tread of 275 = 10.82 inches. 30% of that is 3.24 inches. For the rear 305 = 12.00 inches 30% of that is 3.60. Sounds crazy, but the front tires have a smaller side wall demention than the rear. Smaller wheels do not mean a smaller tire. Just what side wall demention they use. You could use 275/35 or 40's R 19 fronts and 305/ 35 or 40's R20 rears and still fill the wheel well just nicely. Just play with tread and side wall ratios. They're engineers they can figure it out.
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