OK here is why everyone is saying its super dangerous.
Tesla's OEM specs states the tire should be inflated to about 44-45psi cold. (21 inch rims)
That means as you travel, the tire heats up, the air inside heats up, and under heat, air expands, so that psi can climb as high as 50psi.
Usually the typical PSI under most cars is about 32-37 PSI cold...
Now just think balloon.
You got a weaken side wall, under extreme pressure and added on top a car with MASSIVE amounts of torque thanks to its electric motor.
Subject that constantly over and over, and it will eventually go BOOM.
And trust me, the last thing u want is a tire blow out, as under most situations your best level of damages will be, it will just take out your entire side fender or possibly your rear bumper, and thats also not including the loss of that rim.
This should give you an Ideal of how bad a tire blowout is compared to getting just a flat tire..
Ferrari Tire Blowout Shows Dangers of High Speed Driving
Wanna play russian rollute with that tire... go ahead.
But i bet you, when you find out how much it sucks having a wrecked tesla, and waiting for parts on repair is, you'll wish you just paid for that new tire and mounting.