[BrettKA7]

I understand in theory, the front suspension has different part numbers and may look/feel different compared to the 320/328 part numbers.

However, it is not too difficult to find a deal on the 335i M Sport suspension and the potential (visual) trade offs may be worth the increased handling dynamics of the 704 suspension.

I'm not worried about increased looks (I don't mind the wheel gap if my no-line 328i suspension), I'm worried about undesirable handling characteristics due to higher spring rate and/or uneven front-back suspension height.

[bzubi]

I am curious too. My research led me to believe that the rear shocks and front struts will fit no problem. The springs rates, can’t find a definitive answer. However, H&R have the same part number for springs they sell for both the 328i &335i but that doesn’t prove anything about the handling characteristics vs. the M Sport Springs.