Actually…… our old 2500 displaced that theory. Prior to the boat sale it would sit outside. It too would go through tires in the 2-3 year range. Biggest issue was probably letting it sit. I only live 8 miles from work and have a jeep for a daily, so unless we were towing the boat or race rig, it really didn’t move much. My whole removing the trailer tires arose from the fact that we’d get 10 years out of our boat trailer tires after we bought a house with a garage large enough to store it inside.