My rear brakes have just been problems ever since I purchased the truck in 2006. I know I drive very fast (and many would probably say like a jackass), but I've had to replace my rear brakes constantly. My aftermarket Brakeman front brakes last me about 40,000-50,000 miles, so I really don't have a problem there although I would love to see those last longer too.
I replaced the rear calipers last weekend, when one of the pistons just fell out of my old calipers. (I was doing them myself to see what the f*&^ was wrong.) I've had to replace my rear brakes every 15,000 miles or so, and my assumption is that it is related to the calipers. I've also had problems with my rotors showing stress cracks after the first set of pads, and I think this was also related to the calipers as I guess the uneven wear can translate into higher temperatures for the rotors.
If anyone has any potential issues I should look for, please let me know. I saw that someone said brake line issues could cause this, but I'm not too sure what to look for other than leaks.
Thanks!