Originally Posted by chsu74
AWD w/snow tires > RWD w/snow tires > AWD w/summer tires > RWD w/summer tires. There is also the issue of weight over the wheels that are transmitting power.
Those orders are only valid for stopping distance. If you are talking about accelaration in the snow, climbing a hill in the snow or getting unstuck when your rear wheel has no traction, then AWD w/all season tires > RWD w/snow tires. Another advantage of AWD is that if you can always add snow tires if one need more stopping power but if you want more traction in thw RWD with snow, you cannot add AWD.