Power is only useful if the car can put it down and stop. For most B58 owners the first chassis mod is lowering springs (H&R, Eibach, Dinan) for a better stance and less body roll on the factory dampers. Coilovers (KW, Bilstein, ST, Ohlins) add adjustable height and damping for track days.

Sway bars, SPL arms and bushings sharpen turn-in and keep alignment where it belongs on a lowered car. Brake pads are the cheapest real upgrade for track use: street-performance pads for daily driving, race compounds (DTC, Yellowstuff) for the track.

Suspension is chassis-specific, and cars with adaptive dampers (EDC) need matching kits. Filter by your car or look up your VIN.