BC Racing HM Series Coilovers for 2006-2011 BMW 3 Series Sedan RWD (E90)BC Racing HM Series Coilovers for the 2006 2011 BMW 3 Series Sedan (E90) combine the inverted damper durability of the RM Series with the independent compression and rebound tuning of the ER Series BC's pick for track day McPherson strut builds. Every kit is extensively tested on the 3 Series Sedan E90 chassis and refined until it balances ride quality with performance the reason 3 Series Sedan coilovers from BC Racing are the best selling adjustable