Maniac said:
Looking at RealOEM there's no difference in the suspension parts between an SE and M Sport model in terms of springs and struts, which is odd as I'm sure I've seen in the BMW blurb that M Sports get lowered by 10mm, though that's the only mention BMW make of the difference, implying the strut etc remains the same.
Springs are often in a separate spring table.
The front stabilizer (anti-roll) bar is different. On a 20i, M-Sport and Adaptive M suspension both use 31356793190, but standard suspension uses 31356793171.
The shocks are different too, you must have been looking at a different diagram. Try looking on this one --> http://www.realoem.com/bmw/showparts.do?model=LL32&mospid=53585&btnr=31_0850&hg=31&fg=10
01 LEFT FRONT SPRING STRUT 1 31316784917 $276.07
01 FRONT RIGHT SPRING STRUT 1 31316784918 $276.07
For vehicles with M Sports suspension S704A=Yes
01 LEFT FRONT SPRING STRUT 1 03/2010 31316796439
01 FRONT RIGHT SPRING STRUT 1 03/2010 31316796440
Having also just driven a 20i M Sport, I'd say it was stiffer but not uncomfortable, than my Normal (adaptive) mode. So if its a choice of comfort and choice, go with adaptive, but if you don't go with adaptive I don't think you'd know/miss it.
How did M-Sport suspension compare to your adaptive suspension on Sport setting?
We aren't getting the adaptive suspension, but I'm still not decided on M-Sport Suspension delete.