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      01-03-2009, 11:35 AM   #22
Turbomatic
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Drives: E36 M3, 335xic, Rav4
Join Date: Aug 2007
Location: PA

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I think people get confused about tire width and the different tire diameters that could hurt AWD systems. As long as the rolling diameter of the tires are about the same in all corners, as in very small difference such as .1 inch or so, the width does not matter. What you don't want to do is having a larger diameter tire in the back that would rotate at a totally different rate than the front tires.

The factory tires 225 front and 255 rear on the XI are both 25inch diameter.
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