With an RV I would go with an RV Roadside service. Coachnet or Good Sam (I FAVOR Good Sam because of the excellent service they have given me) Some like one others like the other.
Automobile insurance policies generally will only cover you on paved roads.
RV roadside service will cover you on dirt roads
AAA is really 6-7 different clubs and you are at the mercy of the region you are in. As has been reported some regions will not change an inside dually. Some regions will not tow a travel trailer to a CG if the tow vehicle breaks down.
My class A insurance is with State Farm