You want to get some sway bars and proper m3 small suspension components upgraded like the bushing and control arm wishbone etc. you can also invest into some coilovers since
springs just increase pressure on your stock shock and basically all you achieve is a lowered look and stiff ride rather than significant road handling upgrade.
search the forums for m3 suspension upgrade for e92/e90, check out some upgraded sway bars this would get rid of that annoying body roll. Oh, LSD for the extra control power out of each bend, a M3 component which is a must for real enthusiats (I know Hartge makes one for e92 335i)
