Hit a pothole today with my 21" turbine. Gotta flat. Bummer. But I have to say, Tesla Roadside assistance was top notch in taking care of it. The wait was under an hour during rush hour in San Francisco. Reasonable. The guy showed up with the "loaner" Tesla wheel and tire and I was on my way. The SC will repair it. Stay tuned if there is rim or tire damage that will cost $$. But so far okay. 1st issue in 2 1/2 years of ownership. Still think the 21s are worth it. BTW recent YouTube video of a guy hitting a pothole with his 19" and got a flat. Looks pretty bad. Nothing like mine today.