Suspension Secrets BMW M2/M2 Competition Front Offset Caster Bushes (F87)Transform the performance of your BMW F87 M2's front axle with the Suspension Secrets Front Offset Caster Bushes. The standard bushes in the front lower control arms on the BMW F87 M2 are made from soft rubber. This rubber flexes when cornering, which leads to vagueness in the steering and understeer. The flexing of the rubber also contributes to instability when braking hard. The Suspension Secrets Front Offset Caster Bushes for the BMW F87 M2 fix