I have an 02 EXT that I have owned since new. Odo sits at 115k. I had a Ground Effects lowering kit (3/2 I believe) installed when new, and put in Baer 14" front and rear rotors, along with 22s installed then as well. I tow a boat (6500 lbs) and a utility trailer, both on occasion during the summer. I have noticed that when doing brake maintenance (changing pads) the rear brakes are worn at twice the rate as the fronts. Does the brake system have a proportioning valve that might be the problem? Is it adjustable? I would think that if I'm not getting the proper pressure to the fronts that I'm not getting the stopping power that I should. I have read on a few other posts here of a similar complaint, but no suggestions as to why this might be happening. Any suggestions what to look for?