Originally Posted by M3SQRD
I know you're looking for feedback/info on the Bilstein HD dampers but I have no experience with them on the e9x M3 (did have a set on an e30 a long time ago)...however, have you considered the TCK/Koni SA dampers? There are a few advantages of the TCK SA damper over the Bilstein HD: (1) rebound adjustable from the top so you can control ride quality with a quick turn of the knob (increase damping for "aggressive" driving; decrease damping for a great DD street ride), (2) custom TCK damping and bumpstops on the Koni "yellows", (3) able to run at stock ride height or even a mild/large drop, depending on what you want, and finally (4) these dampers have been around for quite awhile so they are pretty much "bulletproof" - install and forget about them!
Sorry for no input on, or help with, the Bistein HDs...
Which TCK SA damper works on the E92 M3s? I looked at there website and the TCK SA yellow koni dampers are for all 1 and 3 series, they dont state that they are for M3's.