LOL Costco told me they will not replace tires on a Tesla!
That's strange. I don't know if it's a new policy company-wide or just your Costco. I replaced my tires there just about the time the Model 3 was hitting the market and they said they do a few cars a week.
OMG! The OEM Goodyears on my Model S 100d are BALD after 2 years (14.5K miles)! I always have my suspension set at high because I don't do much freeway driving, but I do live up a windy hilly road.The tires on my Prius usually last at least 30K!
What gives?
My OEM Goodyears were getting close at 15K and when I got a chunk of metal in a tire I decided to replace them a bit early. I've put more than that on my Michelin MXM4s and they still have plenty of tread left, so the Goodyears did wear much faster than they should.
There are several factors that contribute to faster tire wear with Teslas. People who like to accelerate hard will see really fast wear, but I'm pretty gentle most of the time. People who mostly drive open highway see a lot slower wear than people who mostly drive in the city with a lot of regen braking. The Prius has regen braking too, but the battery is much smaller and the regen is much less than Tesla's somewhat aggressive regen.
If you drive a lot of curvy roads that will probably contribute to tire wear too. Throwing a 4500 lb car around curves puts a lot of side ot side forces on the tires and the friction between the road and tire is the primary absorption of that force.
I have my suspension set to rise at places I go to often, but I usually let it go down to normal while driving around town. Having the car lower does make for a smoother ride.