Driving habits can cause a lot of brake issues. My father-in-law goes through brakes real bad. I have gone from Ceramic to semi metallic, From Cheap to expensive. He warps rotors like crazy, drives his automatic with both feet and constantly rides peoples rears! I'm not jumping to conclusions, just saying that may be some or most of the issue. My Wifes 04 GTP only went through one set of brakes and we owned it till we had 80K on it.