My 2004 2500 4x4 has worn out four sets of pads. They will harden and squeal/grind after 10k or so. The truck sounds like a mail truck stopping. It has 71k on it. I dont tow or haul. I am not abusive but I do drive it like my wifes BMW and Benz. I have put on OE pads to top of the line NAPA. The rotors have been turned and are within spec. I have also replaced the slide pins just to make sure nothing was worn. Am I expecting too much or should I monitor my braking habits closer. I do have a light/moderate drive to work with limited stop and go. Any suggestions?