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      02-20-2013, 05:07 PM   #7
utenigma
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Drives: 2013 F30 335i 8SA M-Adaptive
Join Date: Oct 2012
Location: Dallas, Tx (Frisco)

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The whole suspension setup is completely different on the front due to having to accommodate a front axel

Compare these images from a 335
http://www.realoem.com/bmw/showparts...42&hg=31&fg=05

to the 335x
http://www.realoem.com/bmw/showparts...93&hg=31&fg=05

The front stabilizer bar on the X is a little beefier than even the sport (normal=21.2mm, sport=22.2mm, x=22.5mm) but they're really close

On the rear, all the components are identical except the rear stabilizer, the standard and X suspension share the same 12mm stabilizer, where the sport gets a 13mm bar.

On the front and back all 3 types get different shocks, bump stops, and springs - the X carries the same ride height as the standard suspension, the sport is 10mm lower. X has slightly heavier springs than standard to deal with the additional weight, sport springs are heavier and shorter.

The story's the same with M adaptive suspension, different shocks, bump stops and springs - the adaptive on RWD is 10mm lower than standard (same as sport), where the adaptive on X is same ride height as std.
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