You know that if you call Tesla roadside assist, they will come and install a loaner "wheel and tire" for you? Then you just to fix your tire or get a new one... then return the loaner to a SC near you.
I did not know that, but figured there was something like that. I understand your point, but ...
We had roadside service with our Leaf here north of Eureka, CA, and here's how it worked: When we needed roadside assist, we called and waited quite a while and then a somewhat sketchy guy with a tow truck showed up and helped us out.
IOW, the concept of a call followed by the quick appearance of a with-it millennial with a crewcut and a Tesla-emblazoned polo shirt who solves all your problem MAY not be correct.
Last night, we were driving on a
really remote road in pouring rain (on our way to pick up our M3). If we'd had a flat, I would have preferred "Bummer, I have to change the tire in the rain" to "Oh, crap, no phone coverage. Now what? Flag down a car? Let him take me 40 miles to gas station, or coverage? Leave wife in car or have us both go? Have him call Tesla assistance when he has coverage?"
I realize that the chances of that situation are remote, so I have to decide how much I'm willing to pay for the "insurance" of having a spare.