My 2003 Tahoe just had the front rotors and pads replaced a last summer. I had 143K on them and they still had life on them. My rears pad were replaced at 80K and the rotors cut. I just had the rear rotors replaced and new pads put on back in February. I was really surprised on the life I got with the pads/rotors. I guess I should mention the Tahoe for the first 6 years of ownership was used predominatley for highway driving, mostly to and from work.