I think buying some type of tire chain is a foregone conclusion since Oregon requires at a minimum to carry them even though GM says not to use them. Talk about a Catch 22. Second, traction tires don't appear to be an option in Oregon for vehicles with a GVWR over 10,000 lbs, "You must use chains on any single drive axle vehicle rated over 10,000 pounds GVW." And, "In typical winter conditions, vehicles rated at 10,000 pounds gross vehicle weight (GVW) or less and not towing or being towed are allowed to use traction tires in place of chains." By omitting 10,000 or above, they are saying I need chains. So traction tires don't appear to be an option for me.