I use my Jeep for winter driving in Summit and Eagle Counties in Colorado. We drive it out each year around Thanksgiving, leave it there until spring, and drive it when we are out there. The combination of the Jeep Quadra-Drive II with these tires is simply unstoppable. If I can't get through, the only vehicle that will would have tracks. Heavy snow, ice, black ice, elevations up to 12,000 feet, whiteout, you name it. These tires just chew it up. If the road is open, I can get through.