I had nothing to add even though I feel the same way as most on here which is to have proper winter tires. I am currently running Xice3 on 17" Touren wheels.
I just came home from a little Xmas shopping. Coming east on Marine Way, I am driving in front of or behind an identical 2017 Subaru Forester XT Limited except his is black and mine is white with Eyesight. Long story short, he is directly behind me turning from Byrne Road left onto Marine Dr. if you know the area. Advance green comes on and I proceed and as I gas it the car slips to the right a bit and I thought hmmmm black ice. The tires catch but I'm a little wide, no big deal. I look in the mirror and what do I see? The other Forester has hit the curb with his right front tire. He ran 10 feet wide and was stopped. Didn't look like any damage I saw him a few cars back up on Gilley a minute later, but that just illustrates the difference, since he was on the OEM wheels identical to my summer wheels so I assume is is on the stock Bridgestone Dueler HL a/s tires.
Get the winter tires.....