Does anybody here actually modify their X3's? Or maybe as an attempt to fix some ride quality issues? I know the X3 is far from a racecar, but I've found suspension changes to be incredible.

I first tried eibach springs with my stock M-Sport shocks/struts and sways and the ride and handling was drastically improved, but I'm going all out with my X3 as a unique project. I picked up the KW Variant 2 coilovers and they're perfect. Comfortable when you need and incredible handling.

I actually picked up an extra set for someone who had to back out, so I have an extra new set for ridiculously cheap at the link below.
FS: KW Variant 2 Brand New - XBimmers | BMW X3 Forum

Is there anyone else who has modified the suspension on their X3? I also picked up a set of H&R swaybars. The X3 feels even better than a 3 series.