It had never occurred to me to buy my winter tires from Tesla - I bought the wheels on line, and took them to Kal-Tire, where I bought the tires and had them installed. If Tesla is making it difficult to buy from them, then don't buy from them. I did buy my TPMS from Tesla, because I was worried about the communication with the car, but I was able to easily drive to a Service Center to pick them up. If I'd lived hours from a Service Center, I probably would have found another source that could ship them to me. Kal Tire installed them with my winter tires without blinking. (The manager of my location drives a Tesla too.)