Ever since my dad got his 07.5 and I got my 08 the rotors would get hot real easy and warp while braking and fade. Once they were allowed to cool they would be fine. At about 15000 miles I had my rotors turned and put on more aggresive brake pads. The rotors had surface cracks in them. Once I put the new pads on, the rotors only got worse. The brakes still worked great and had little fade, but under braking they would get real hot and the steering wheel would shake. I went to the track and slowing down from 110+mph after three or four times the rotors got soo hot they were warped permently. I have never had any problems with the brakes in my dads 04 3500 and 05 3500 dually under the same conditions. I went to Napa and bought some premium rotors to try out because I believe from 01-07 -NBS, the material they used for rotors were changed. Once I put on the new rotors (fronts only) I couldn't believe the difference. The brakes work way better than before. I went out and tried to get them hot. I went from 100mph to 40mph, then 120mph to 0, then to 70mph and did a panic stop. I could smell the brakes getting hot but they didn't fade or warp. I could feel that the rear brakes were starting to warp. Before, if I went from 110mph to 60mph (not hard on the brakes just enough to slow me down) They would start to warp ever since the truck was brand new.
Here are a few pics of the rotor with 31000miles on them and have already been turned once.
Here are a few pics of the rotor with 31000miles on them and have already been turned once.