They asked before they put the new tire on and I agreed. The tire is already paid for. I had no reason to doubt them until I saw the bill which said bead damage. Everybody I've talked to has said you would know right away if a belt is broken. I've never had a broken belt. My tires have 13,000 km in almost 3 years, no offroading - they were babied. They were like new. Added to the problems in my other thread I began to wonder if something else happened. I never thought to ask to look at the tire. They actually waited until late in the day to change my rims and I had to leave the truck for the night (they offered a rental but I declined). I didn't even think of looking at the bad tire the next day. I escalated my complaints about the rims higher up in the dealership yesterday. I will probably bring up the issue about the tire as well. The first ironic part is that I bought the tire warranty from GM which is not applicable in this case. The second ironic part is that less than a week before they discovered the bad tire, I had specifically asked the dealer to check my tires because I get some tread noise over certain pavements (no thumping or vibration). The mechanic specifically noted on my bill that the tires were inspected and there were not defects or signs of abnormal wear. In less than 100 km I ended up with a broken belt. It could happen. At least I have now learned to ALWAYS LOOK AT THE OLD PARTS.