I had a similar situation with my 2018 Model 3 LR RWD (purchased 7/18) and the OEM Michelin Primacy MXM4 18 inch tires. With only 22,800 miles, the tires were worn down to 2/32 and 3/32 (rotated 3 times approximately every 7k miles). I did an online chat with Michelin Support and was told the...