Took the spousal units car to have new tires put on and get the oil changed. Found the left rear brake disk in 2 pieces. The caliper had locked up and the pressure cut the disk in two pieces. I called and asked her and she admitted that a couple of months ago it did not want to go. She drove it home, and continued to drive it daily. It got better so she didn’t worry about it. so I am spending my Saturday morning at the shop waiting on parts to be delivered. Of course it’s my fault because I did not check the brakes for her. for those that don’t know, this is supposed to be one piece, and the ring is supposed to be about 1 inch thick. The good news is that the other 3 brakes are in very good shape.