avramd wrote:I only used the autopilot a little bit on Rt 1, it wasn't pleasant. Driving wise the car was fine, it's a little harsher of a ride than my Outback was, but that's to be expected with the tighter suspension. One thing that surprised me is that despite having 19" wheels, these tires are only slightly lower profile than the Outback's - 45 vs 50 (I think).
I did have a very uncomfortable experience on the way home on Rt 1 where heavy flurries accumulated enough to wet the road. At one point things just felt "odd," and my immediate guess was that an extremely refined stability control and antilock brake system was quietly and quickly "tick-tick-ticking" away. It was funky activating ABS simply by lifting off of the accelerator slightly, but that makes perfect sense given that the regenerative braking system is so aggressive.
I quickly tested the steering and surmised that I had approximately 5% of normal traction at the moment. At 55 mph it took me about 10 seconds to slow to 45 mph. Fortunately all this happened on a dead straightaway. If I had needed to avoid an obstacle, we'd be having a different conversation right now. For the next 30 mins I paid close attention to the road color, and drove 10 under the limit any time it looked wet. My Y does have all-weather tires. This is definitely one the biggest traction deficits I've ever experienced and in the seemingly mildest case of winter conditions. What I can't possibly know is whether this was a random freak outlier event in which black ice formed right in front of me in extremely mild light snow in a way I've never seen before, and any car without studs would have behaved the same - or if this was more emblematic of this being a very heavy car, and all weather tires really just aren't good enough for any normal winter conditions. I don't really care b/c I intended to put studs on it all along, this just means I do it earlier than originally planned.
Two comments:
First, I'm really sorry I didn't warn you about the amount of regenerative braking the car applies. We ALWAYS turn off regenerative braking in the snow. I want to be the one in control of ALL braking - period. I'm not certain that the Tesla uses all four wheels for regenerative braking, it may only use the front two, at least that's the way it felt the first time I drove the X in snow. That, obviously, would make the feeling of a lack of control much worse. There is a section in the manual about driving in snow, take a look at the various traction control settings etc... It's worth reading.
Second, while the Model-Y is heavy (4,400 lbs) compared to a compact car, it isn't all that heavy. It's running on 255 sized tires (I think). So, one can compare it to a car like the BMW 520 which runs on 545 sized tires and weighs 3,737 lbs, or the MBZ e500 which runs on 245 sized tires and weighs 3,800 lbs. Then there is the Ford Explorer that weighs 4,300 lbs and runs on 255 sized tires. I don't think the tire size and weight are the issue, but I could be wrong. A lot of folks think the Model 3 and Y are "mid sized or small cars", but they're really comparable to the BMW and MBZ sedans for interior space etc...
To conclude, I think once you get the regenerative braking turned off you'll be a much happier guy in snow and ice. Frankly, I turn off both regenerative braking and traction control in those conditions, as there are some times in snow when these things make matters worse. You can read how to do this
HERE But, and this is a BIG BUT!, I would NOT DO THIS unless you're trying to get through extremely conditions. A Tesla has so much torque that with traction control off you can literally smolder a tire if it happens to be sitting on a patch of slippery stuff, like paint in a cross walk. (I can tell you how I know it if you like

)
Please be sure to read about ABS on the Tesla Website if you haven't had an ABS equipped car. When the Tesla goes into ABS the shaking is significant, like you're on gravel, but the thing stops gangbusters. The shaking is what the ABS is supposed to do.
Forum Posts HereFinally, I think once you get the regenerative braking turned off, you'll be much more comfortable in snow.