I installed EBC yellow stuff pads 8k miles ago on my 09 Ram 5.7L rear.... it's now down to 4mm (time to replace shortly) after only 8000 miles. It's a truck... it has obviously never been tracked or something stupid like that, and it wasn't towing anything.. just living an easy life with 50/50 hwy/city non-aggressive driving. Rear EBC yellow pads are dead...after 8k miles. The brake dust was also intolerable, the wheels are forever black with dust. Perhaps I shouldn't have gotten a yellow stuff pad, but the Hawk SDs on the front are still almost full and were changed at the same time (not to mention the fronts takes a lot more abuse). Previous OEM pads in the rear lasted 84k miles! If I had put the EBC yellows in the front, I am certain I wouldn't have gotten more than 7k out of them.