Originally Posted by -Z-
Stock size is too wide for winter tires and will not be effective in the snow or on the ice imho
True, in deep snow (or any snow really), smaller width = better. Less to thread through and push aside.
On ice, nothing would really help you as much as a studded tire. And there you also want a narrower tire (e.g. just check out the WRC cars, they ride on what looks like a donut spare tire LOL)
On the overall size of the winters, I think it is a decision based on where exactly you live. If you are say in the Snow Belt, then definitely downsize the tire width. If in the 'mid' Northeast, where snow rarely accumulates and you find yourself driving on generally cleaned up roads, then a much narrower tire would really compromise the handling and staying near or at stock widths may be OK.
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