I had bad vibration coming from the stock brake pads and rotors coming down the mountain at 80mph. I bought the Powerslot rotors and Hawk pads all the way around before even checking everthing out. I just believed it had to be a warped rotor.
A mechanic friend came over to do the rotor and brake change. He found the problem. Rotors were perfectly fine, the OEM pads...though they had a lot of life left in them, had seperated from the metal backing. This was causing my vibration, not the rotors.