I think I talked about this in another thread, but I do change both my cars' wheels myself. I always hand tighten and torque to spec in a cross pattern with a good quality torque wrench. Last year on my wife's car I snapped 1 lug nut removing the summers and this past fall I broke 5 (!) lug nuts. To remove, I use a breaker bar and the proper size socket and apply even pressure. For some reason as I'm applying pressure the thing will just "pop" and the stud breaks off inside of the nut. It's extremely frustrating because I'm doing it correctly. I was always told to leave the studs "dry" but this time I'm going to apply some anti-seize to the threads before I re-mount the summers. When I had it repaired last fall, the shop re-mounted the winters after installing the new studs and had them lathered up pretty good with some silver colored (graphite?) compound.
No problem at all with the Model S wheels and nuts.