With little to no drag on the rear wheels and the front wheels sticking and rolling, there is force on the front of the car from the surface to the wheels to make the wheels turn, putting the car in an unstable orientation like an inverted pendulum (if it's initially moving forward with momentum or facing downhill). With all wheels equally skidding, the car will travel with whatever its initial conditions are.
It stings a bit because I am a boomer. However living in MN and Steamboat I have a lot of experience, some very scary, on bad roads. It is worth knowing what's what ;-)
I have those on order, should be in this week.
Tested it out today albeit with some of the snow and ice melted and limited space to work with, but based on just regen braking and friction brakes (no turning etc.) I thought it performed as well as the Tesla; which again in my experience/opinion is very good. The heaviness of both vehicles is disconcerting if you do begin to slide.
I just switched out to the Michelin M/S2 today. They are rated much better in snow/ice. I still have 10K of life on the OEM Pirellis, I am keeping them in the garage until April when I will put them back on and run out the rest of their life...then back to the Michelins next winter. This plan should give me two winters of very fresh tread on the Michelins. All I can say so far is that the Michelins are noticeably better in ride and noise level.
EVs are heavy! They did nix the 21s for the 2nd generation.
