I have a X4 35i with DDC - lowered with H&R springs- about 35 mm - pictures in X4 thread. STD dampers - DDC.
Somewhat better steering precision and slightly less sidewindsensitivity - but harsher ride- especially front. Probably resting slightly on front bumpstops.
If you are sensitive/driving much on bad roads - don`t do it.
Looks great!
