skinny tires are better in snow, think of a piece of plywood and a 2x4, what is going to slide to the slide easier if you push it in snow? which will track better? same principle with skinnies and wide tires. because the surface area of the skinnies are small and the footprint of the tire isn't as wide, more force is exerted per square inch and the tire is allowed to stick cut through the slush and each square inch of the tire is actually planted more firmly
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