IMO you're ruining a great car. I had Racelands with Koni STR.T rear struts for a year and went back to ZHP springs with koni yellows. Ride is exceptional and handles way better. If you don't mind a noisy, bumpy, sh*tty & embarrasing ride... Racelands are the way to get that extreme drop. I hated my Racelands and was even too embarrassed to have people ride in my car.
'04 330i ZHP