E90 330I Coilovers did not fit as they were supposed to fit an M3. The rear lower eyelet is too large of a diameter to fit in the BMW mount and the top mount diameter is too big for the OEM BMW washers. I'm sure a non M kit would have fit my car however when I gave the SKU and part number no one was able to tell if I had an M kit or a non M kit. HSD and Driftworks did contact and try to help with install advice/guidance. The one big issue with this kit is that it mounts to the front pinch spindle, using the threaded portion of the front coilover tube. If you want height adjustment, you have to undo your pinch spindle and you also risk ruining your threads as they are prone to damage in the pinch spindle. I have HSDs on a couple of my other cars and I've had no issues however, this set up might need to go back for a redesign.