After having owned electric for a few years now, I advise people that wiring for a Nema 15-40 is a sufficient in the garage for most driving needs of a Tesla. You can use a 40A or 50A breaker for that with matched wiring to draw 32A or 40A loads (respectively) - you'd choose depending on what your charge equipment can pull. These days UMC are 32A so a 40A breaker ... just like a stove. In my case, 50A breaker with correct wiring sustains 40A which is what my portable UMC draws. (It's older style higher power).
I have both a Nema outlet and a HPWC hanging off a 100A subpanel in my garage. The HPWC is on a 100A breaker and device is set to 80A because that's what my dual on-board chargers can absorb in model S when maxed out. The Nema 15-40 is on a 50A breaker and is hanging on the outside wall there for EVisitors (plugshare'd if you need a hit - I'm on the outskirts of town, so first charger to be reached coming in from the highway - handy location for a desperate need).
We wouldn't ever see both chargers being used at the same time, but if they accidentally are used simultaneously that's what a chain of 100A breakers will take care of (200A main panel in house has 100A branch breaker to garage subpanel, the garage subpanel has a 100A panel breaker at the top, and another 100A breaker for branch to HPWC, and a 50A branch breaker to Nema outlet.
Upgrading my lot service from 100A to 200A and adding a subpanel in garage had a new infrastructure cost of around $8000 to support 80A charging in my garage. It's "nice" to have this kind of capacity and I depended on it heavily for first couple years but I seldom charge at home any more... so kinda wasted now. I charge at work and places I visit (IKEA, Canadian Tire, MEC, Peavey Mart, Supercharger @ mall, etc..) all for free. It's not hard to keep the car between 20% and 70% all week charging here and there. Weekends I sometimes charge at home.
Anyway, I've now got 100A in the garage for any purpose... which on an acreage is a bit of a selling point, to support a welder, air compressor, shop tools...