OK, I changed my pads and rotors on my 12 GT, I have the 14 GT500 rear rotors with the adapter on them. All I did was switch to drilled and slotted rotors and hawk pads, not my wheels rub the caliper. I replaced all the fluid with a power bleeder, only the rears rub. The center of the caliper is rubbing . I did NOT change wheels, and the GT500 adapters were on as well--all worked great. Just swapped rotors, pads and replaced fluid--what the hell can be going on? . I hope I am not overlooking the obvious?