I have an 07 Shelby GT which has the same rear disc brakes as the 05 - 09 GT's. At 25,000 miles one of the rear brake pads went metal to metal. Ford replaced that rotor, caliper and all the rear pads. At 30,000 miles all the rear pads went metal to metal. Under warranty, Ford replaced both calipers, both rotors, both parking brake cables (TSB) and new pads. The front pads still have about 1/4 remaining and are orginal. I admit the car is used for open track and solo on the weekends, but most of the miles are street. Has anyone else had this problem? How about it open trackers, any recommendation for new brake pads? I cannot upgrade to larger brakes and stay in stock class for SCCA solo.