On 3-23-2018, at 29,837 miles, I purchased new rear tires from Tesla. The purchased tires were 275/45 R20 110V A/S Continental CrossContact LX Sport tires. The purchased tires were installed at a Tesla Repair facility and a 4 wheel alignment was performed at that time. Last week, at 46,326 miles, the passenger side rear tires suddenly started loosing pressure and was flat in 5 minutes. I discovered that the inner edge of the flat tire was worn down to the steel wires and the inner edge of the driver side rear tire had no tread. The folks who helped on the day when the tire was flat, stated such extreme tire was abnormal and suggested that the wheels either had negative camber or toe adjustment problem. Has anyone else on this forum experienced this problem? What was the end result? Do you agree that it is abnormal for tires to wear out completely after 16,489 miles of use? When I return to the Tesla Repair facility, what should be performed to prevent early wear of the tires like this again?