I agree with Rich. The stock bridgestones worked O.K. the first Winter I had them, but were not nearly as good last year. I'm glad I went with the AT tires I've got now, but I've seen the tread pattern on the Revos & it's much better than the Bridgestones that come factory equipped. The TOD works amazingly well to keep traction (I get a kick out of seeing the display flicker), but there's nothing (streetable) that will keep you from sliding on ice so be carefull!