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Old 03-09-2013, 07:02 PM   #20
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Join Date: Aug 2007
Location: Medford, Or
Posts: 178
My Ride: 2004 325i
Originally Posted by JBEAU View Post
stay within 3 revs per mile I went with 1 rev per mile to be safe some of the northern cars and x series are more the that from the factory
How do you determine revs? Sorry if this is a dumb question or not. I have staggered wheel set from my other e46 and wanted to put them on the xi... They are within about 5mm of each other when calculating side wall diameters.

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