Replaced old suspension.
Bought a 2002 325i sedan which originally had stock struts and H&R racing springs. Today I installed the H&R Touring Cup Kit and am surprisingly impressed with it's improved ride comfort. I was a bit apprehensive when I noted that the color of the springs were blue (the H&R red springs made the car look slammed), but the TireRack technical specialist emphasized that the color really did not make a difference. I am not absolutely convinced that he is correct because the car only sits about 1/2 an inch higher. Either way, I am happy with the ride and the maintained aggressive look.