Ive been looking for a second set of wheels to fit some softer rubber on for a while now and ive been offered a set of "BBS CH" wheels. he says they are the real deal but they cam with the car... He is a mate so isnt realy trying to pull the wool over my eyes. At the price he is asking they would be a steel if they are real. Is there any way to tell? Anything the real ones have that the fakes dont?