These snow socks work very well under the following conditions: - All the roads you drive on are covered with solid snow and ice, and part of your ride is not covered with snow or ice. This works very well in areas like a ski resort where there is snow and ice everywhere and there is no bare asphalt.- The snow is no higher than your vehicle's ground clearance. These snow socks will not work under the following conditions: - On roads full of melting mud. Mud and water will soak into your socks, making them too heavy and slipping off your wheels when you're going over 20 miles per hour. - on roads that are only partially covered with snow or ice, but not completely covered with snow or ice. . The asphalt or concrete part of the road will destroy the socks in a few minutes. In emergency snow conditions this is a great solution if you don't have snow tires.