Well, a lot of Z3 guys run higher rear spring rates (600 or 700) and no rear sway bar. You also want a bigger bar up front to help keep the mcstruts from losing camber in the corners. It also seems TC Kline has recommended many different rates over the years so it would be helpful if you knew what they were. __________________ ~Dave~ 98 328ti Morea Grun slicktop 11 128i space gray slicktop 13 JGC WK2 Deep Cherry Search | RealOEM |