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      07-06-2018, 03:49 PM   #10
tlow98
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Drives: 2009 E91, 2014 F15 x35i
Join Date: Aug 2011
Location: Bay Area

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I believe the only difference in the rear end on the x-drive is the lower diff ratio of 3.91 (?). I forget the exact number, but it’s different than rwd versions
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