[Sirrotica]

They're have been many racers that have sheared off the rear frame of motorhomes towing an enclosed race car trailer with a bumper hitch. That flimsy, light duty rear frame section on most motor homes, is only meant to hold up the floor and living area. Flexing it over the road constantly, with 5 plus tons of trailer hooked to it, usually doesn't work out in the long term.

Maybe there is an option to use heavier steel for that section when it's being built, but any of the rear frames I've looked at are way to light duty for attaching a class 3 hitch to.

BTW, maximum class 3 is only to 8000 Lbs, most open trailers with a car on it, and equipment carried on them will likely be over, or near that rating.

E trailer does caution putting high weight rated hitches on motorhomes because of the frame deficiency of most motorhome rear frame sections.

I've seen, and heard of too many racers breaking motorhome frames to think it's a good idea.