My mechanic just told me that at 45,600 miles, my rear brakes are very close to the limit. They passed inspection but barely. I just changed my front pads two months ago but they are so lousy that I am going to change those out as well. Word of wisdom, don't buy brake pads from Prime Choice...$21 sounds like a good price but they are AWFUL. When I am done, Big Blue will be sporting Brembo rotors and Akebono pads all the way around...not cheaping out this time.