[X Driver]

Originally Posted by theaudir8fan

I see what u r saying, but even tho original E70 M rotors is technically a 2 piece, they do still have a large portion of the iron disk that is molded into the center hub. What I'm referring to is by 2 piece is the usual design where the iron rotor ring is just the ring it self and the majority of the hub is alloy which attaches to the rotor ring itself by hardware, this is more inline with aftermarket big brake kit rotor designs

You are right...