I have heard that the Goodyear Eagle Touring tires are not readily available outside of Tesla Service Centers. I would check that out with Tesla and discuss the pros and cons of going instead to the previously supplied Michelin tires which are commonly available. The Goodyear tires are supposed to be quieter, although this is apparently debatable. A lot of people think the Michelin tires are great. I had a blowout with a Goodyear Eagle Touring tire in the first two weeks of car ownership, so I am a little concerned about the tires. Honestly, the jury is still out, but given the opportunity I would definitely look into it.