Originally Posted by montreal red
they do have amazing fade resistance and are lighter in terms of unsprung mass but they are susceptible to chipping if you accidentally hit the rotor when mounting/dismounting wheels or if a huge rock hits the rotor hard enough.
its just not worth it.
The CCM-R no long have this problem, but of course the cost of replacing them is big and I believe you can't just replace PCCB with the CCM-R rotors. Because of the above problems with the PCCB and original CCM many people replaced theirs with Mov'it ceramics.