Hello Here are the facts. The tire tread is good. My kid bumped the car while it was parked and the passenger's side tire went flat. I drove it approx 150 feet before I noticed it, then back another 150 feet into the driveway and put on the spare. It looks like it popped the bead. The tire people took it off the rim and showed me this. Pic 1 shows bits of frayed rubber on the wall of the inside of the tire. Pic 2 shows the collection of rubber bits that have chipped off and fell to the bottom of the inside of the tire. They said there was oxidation on the rim that caused it to pop the bead so easily and cleaned it off. They would not put it back on the car because it this condition it could very easily blow out on the highway an cause an accident! There were no holes in the sidewall just the frayed bits approx half way around the wheel on the inside. Can this tire be saved and used until the treads wear out? Click pic to enlarge.