A front wheel is more easily accessible and you can turn it to expose more of the tread. My rear wheel puncture was on the innermost tread block and would have been hard to reach. I could perhaps have done it by rolling the car to just the right orientation and then lying on the ground to work on the tire from the rear. There just isn't much room to plug a rear tire on a Model S.
I carry full tire repair tools in my car because I live and drive in remote rural areas. The usual comments "I haven't had a flat in x years" and "Just call for roadside service" aren't an option for me. I want to fix my problem and be on my way. My tool kit: breaker bar, 21 mm deep socket, folding cross-type tire iron, lug nut cap removal tool, scissors jack and hockey puck, torque wrench, 12 V air pump (two), tire pressure gauge, plug kits, long nose pliers, tarp for messy weather, gloves, blaze green safety vest. Air pumps usually come with a light or a flashlight would also be needed for night.
I do all my wheel changing for snow tires at home so I have lots of practice removing and replacing wheels on my car, although my home floor jack is much easier to use than a scissors jack.
I've had three tire punctures over the last year, although two were slow leaks that I was able to pump up and get home, to plug the tire in my garage. Monday was the first time I've had to plug a tire on the road. You know you are in for a tough day when you get a TPMS warning, pull over to check the tires, and hear hissing!