We got about 16" of snow on the eastern end of Long Island from Winter Storm Nemo (We're naming them now?), and almost that much fell on My Model S. Thanks to the iPhone App, I was able to preheat my car to a balmy 80 degrees, and most of the snow slid right off with minimal effort (Exception: The hood...No engine to warm it up and melt it!). I drove it today, and while it took some effort getting it out of my very icy driveway, it handled way better than I expected on roads that still had snow pack, ice, and slush on them...And I have the summer 21" tires, so you can imagine my surprise that I didn't end up in a ditch. I mean, it's no 4-wheel drive SUV, but when I rocked the wheel side to side, it kept going straight. It didn't slide as I took curves at 30-40mph. Of course, when I hit the brakes on top of snow, it's skidded forward a bit, but so does my wife's Range Rover. So, anyway, for anyone is colder environments, you may be equally surprised at how well the summer 21's perform. I had planned to swap out to the all-weather 19" wheels when they come back in stock, but not anymore...I'm sold on the 21's. So, here's my car under a nice, cozy blanket of snow: FYI, I had planned to put my car cover on my Model S so I could easily scrape snow off my car without scratching it. Well, it rained all day before the snow started, and I didn't want to put the cover on a wet car, for fear that the cover would freeze to the car.