My wife was baking up and the rear tire locked up - we thought it was the transmission- when we went to the dealer they said one of the bolts fell out and caused the caliper to rock back and catch the inside of the rim it poked a hole in the rim and locked the wheel up - they said it was luck it wasn't the other bolt because it would have caused a spin out. My car was under warranty but they would not honor it I'm fighting it now