Originally Posted by Andy M
Reason you should get winter tires is because rubber gets stiff once it gets cold. There's a temperature range and winter tires are made of tackier rubber (so when it's hot, it wears a lot faster but when it's cold it's the right viscosity to grip the road).
Summer tires when they get cold turn hard like plastic so it can't grip the road or snow/ice.
Youre right. My DWs don't grip at all right now. Time to swap.