I don't know if I am doing something wrong, I never stand on my brakes, in fact I downshift when going down hills and some how I've warped my rotors. This same thing happened to my 2010. Larger tires added increased rotating mass? I live in an somewhat "hilly" area. One of the highways I drive often has a pretty good grade and I sometimes exit at the bottom. The off ramp is short so I am sure the brakes get toasty when I am exiting. I never hose the wheels down when they are hot. Other than that I can't figure it out, the truck has 16K on her, and is almost a year old.