I have had some sort of 4x4 since I got my driver's license and have never had to use chains, but since it is the law to carry them, I have had a set with me. I drive over some mountain passes sometime in the winter and go skiing a few times, but don't go off roading or anything. Chains are required sometimes, but I have never been up when they were required on 4x4s, although it can happen. What is a good chain to carry for this truck that will likely never get used? I have the stock tires on the 20 inch rims.