I just changed my OEM pads with ~110k on them. Put back on new OEM pads and left the rotors alone. Front pads were nearly gone, rear pads were still 50% and the rotors were still well within spec. Calipers looked perfect minus the layer of reddish brown brake dust. Granted I rarely tow heavy and put a lot of highway miles on it, but still seems odd to have so many failures with others having zero issues.