I was hearing some scraping on my front driver side brakes last week. Last night I changed the pads. When I pulled them out I found the inside pad completely wornout. The sqeaker was broken off so I had no warning that it was worn out. The 3 other pads still had plenty left on the pad. Has anyone else had this happen? Luckly I caught it before it damaged the rotor. I have about 45K on the truck.