on 205/55-16 and 225/50-16 ET=42 Rims 42 one pice 225/55-16 ET=46 all 17x8 rims ET=47 I have asked TIERACK before if 245/50-16 or 245/45-17 will fit F/R whit ET 38 and get wrong info ALL talk about camber and understeer is wrong I will put on rims 17x8 ET 38 whit the new Michelin Primacy 225/50-17 F/R or Pirelli p6000 245/45-17 F/R I have talk to BMW AG about that,and it will fit and work well.I dont want to drive a hard car.