If your rig is over 10,000 pounds you must carry tire chains for towing vehicle and trailer for last braking axle. Book says you must carry a spare chain as well. The book says you must chain if signs require autos to have snow or traction tires. Doesn't matter whether tow vehicle has four wheel drive or no.
Standard trailer tires are sufficient.
Only real place you could have issue is south of Ashland, OR and down to around Mt. Shasta, CA.
Watch the weather and hold up is my advise. We have carried chains for MH and toad. I would never put them on. I would wait out any storm and wait for truckers to go with out chains.
Oregon chain requirementsWashington chain requirementsCalifornia chain requirements
