If this winter is anything like the last one, you will probably be fine. However, if there is a significant amount of deep or wet snow/ice, you will have some problems with stopping and turning. I ran the DWS all winter in PA, where things are more mild and they did OK. I did have a few white knuckle moments, and had to avoid some of more hilly areas. I bought dedicated snows for WI, though.

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Chris

2012 BMW X5 50i
2003 BMW K1200RS