Chains are cheap insurance to have in a vehicle. As a Colorado native, I have had a least one set of chains foe every 4x4 I have owned. Better to have them and not need them, then need them and not have them. The advantage of tire chains is the change of driving style. Without chains you tend use speed and momentum to get through the tough areas. You need to be prepared to drift a bit to the left or right. With chains on you can usually drive slower and maintain better vehicle control. This is nice when you are in situations with grave situations. It similar to the difference between getting a 2x4 through a tough section of road compared to a 4x4. Chains also let your vehicle do more work. If you have to winch, pull, drag items then chains are stellar. On average, I have used Roy chains on road about one every 6 years or so, but it is nice to know they are in the truck in the winter.