My blizzaks were 1/2 tread, maybe 8/32 and had winter rims. I got new average quality all season tires in nov and I put blizzaks on in December and the blizzaks were worse then my new a/s tires.
2 sets of tires let’s you extend tires life and choose when to install them. I wanted new tires before snow, not in spring. Selling winter tires is easy in mn