Thread: Wheel Help!!
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      11-01-2012, 08:05 PM   #3
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Drives: F10-550ix-2011-Carbon Black
Join Date: Sep 2011
Location: Canada

Posts: 23
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What are the original (factory) wheels/tires specs that came with your car?

Basically, your new set "rolling diameter" needs to stay within <=3% (preferablly <1%) of the original set, moreover-especially with xDrive-the difference between the rolling diameter of the new Front set compared to the new rear set should optimally stay below 1%.

Here is a good tire size calculator that I have been using for that purpose:
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