I replaced the tires of Model 3 at around 20K. I had BMW 6 Series replaced at 12K, Audi S6 at around 18K. I will set how long the tires of this Model S will last. I will be very upset if they only last 5K.20K? That's extraordinarily high based on my experience.
I typically own/drive higher horsepower vehicles and summer tires in the rear will typically last 5-8K miles only.