Some will say that if you have a 4X4 with real snow tires, chains are not required.
In some states, that is true, IF the 4X4 is not towing! If it is towing ANY kind of trailer, and chains are required, even though it is a 4X4 it must have chains on the rear axle, and IF the trailer is equipped with brakes, IT must have chains on the wheels of at least one axle. If the trailer is a light weight with no brakes, it may not have to have chains on any wheels.
Also keep in mind that many states now require brakes on ALL axles of any trailer that is required to have brakes. Montana does: Single axle, tandem axle, triple axle, doesn't matter. ALL wheels must have brakes if the trailer GVWR is over 3000 lbs.
