Nope I have had them on since about 95k, so that would be almost 8k miles, since then I have dont numerous stupid things that would have heated the brakes real well. I have also done numerous changes of rims for painting/cleaning/tire purposes. have held up well, and lasted like a said about a year and half, looking like the day I got them. As long as you apply them properly and dont scrape at em with a blade they should last for a long while.
2003 Redfire V6,
Show: Smoked everything, cobra front bumper, gt rear bumper, rear decklid and lower valence blackout with black mustang letters, 5% rear front 15%, black 98 Cobra rims front, 95 Cobra R rear black with chrome lip, black scoops and spoiler and exhaust tips
Go: CAI, True Duals with flowmaster super 44's, Bama Tune, full suspension (lowered, 8.8, 4.10s, UCA, LCA, springs, CC plates)