I’ve got four Silver slipstreams with tires from my model S. One tire had a flat and I plugged it so that tire will need to be replaced. two tires are at about 4/32 and another tire is about 7/32. These are the OEM good years Tire size is 245/45/19. I am in SoCal in the Valley. Two of the wheels look great, almost new, the third wheel has some moderate curb rash, and the fourth has been brutalized.