Probably, but you'll hear the guy running the machine bitch when it chews the carbide cutter off every time it comes around. The other problem is you're also going to remove the chamfer from around the slots and holes. (Don't know if these even have holes, but it's true no matter what kind they are) Also, if these are chilled, I'm sure that metal treatment is only a few thousandths of an inch thick. You cut 15k/1000 off the rotor, you basically have regular rotor.