An important part of cold weather survival while living in a vehicle is maintaining traction while traveling in severe snow and ice. I was fortunate to be able to purchase a decent set of all terrain tires this summer. They help tremendously on the snow and ice over a standard street tire. For extreme conditions I carry a good set of tire chains that I purchased from Les Schwab tire company. These bad boys provide unbeatable traction for the Volkswagen Westfalia. I have been in 8-10 inches of fresh snow with the chains on and no problem of getting around in the mountains to go snowboarding.