Finally, the best election to reduce the understeer probably is
equally between the wheels or the most similar. without having to cut
-225/35/18 in 4 wheels
-245/35/18 in 4 wheels
-235/35/18 front and 255/35/18 rear
135ijb3, h & r filter, SSK, CDV,clutch stop, klracing fmic,seccond catted ,225-255 michelin ps3, E93F-E92R swaybars.M3 parts front.M3 tension rear.Plates mod(F-2,0º R-1,5º).Bilstein + stock springs.Ps rotors.Subframe bushings.Weichers fstruut.Finally mods sdiff and raceland dp.