We have a F350 4x4 dually with an Arctic Fox 811, and plan on using the rig through many of the coming fall and winter months in BC, Yukon, ID, MT, OR, CA and WA. I found that Washington State require...
I have and carry chains for both truck axles and one trailer axle when conditions may require. Have used them but not all as conditions did not require it. I prefer to be prepared.
If I had a dually I would have dual tire chains. Although in light conditions I might use the singles(front set) on the outer dual.
If I am putting on chains I don't want those snap on plastic or sock outfits. I need something that will get down and grip the ice below 6+ inches of wet slush on the 8% grade.