[IdahoDoug]

I don't want to derail this thread as the OP has a problem he's trying to figure out. Pads and rotors are both consumable items that are designed to wear down. A pad is the same material its entire depth. So there is not a logical reason to say "don't use old pads on new rotors" if the reasoning is some type of material incompatibility. Nor is there a reason to say "don't use old rotors on new pads".

Yes, break in is a good idea. Yes there is a right and wrong way to do it. But discouraging people from re-using perfectly good parts may not be the best for people on a budget. I disagree the only way to refresh brakes is to replace pads AND rotors every time. That's not what the people who design and build cars advise. However it would not be a surprise that people like Stoptech who sell brake components would have us do.

I'd be more than happy to participate in a separate thread to discuss positions on whether it's OK to re-use pads, re-used rotors, or re-use both.