Hitch mounted motorcycle carrier on class c

I'd be somewhat concerned about that much weight on the hitch itself. I assume the motorcycle carrier extends further back than a typical trailer ball hitch, so the torque from the tongue weight is magnified somewhat due to the additional leverage. Many class C hitches are already relatively constrained in terms of tongue weight (it's not uncommon, for example, to find them with hitches rated to tow 5000 pounds but with a tongue weight limit of 350 pounds).

You can compute the effect on the weight and balance by measuring the distance from the motorcycle to the back axle and from the back axle to the front axle. If, for the sake of simple computation, they are equal, then you're unloading the front axle by the weight of the motorcycle plus carrier (or about 500 pounds) and loading the rear axle by twice that amount (about 1000 pounds). It's probably not going to work out very well weight wise.

It would probably be better to put a receiver hitch on the front of the motorhome and carry the motorcycle up front. Motorhomes usually have unused front axle carrying capacity, while using up all of the rear axle carrying capacity.

Other alternative is to put the motorcycle on a small utility trailer. On the trailer, you can also put other storage items, such as fire wood, gas can, chairs, etc that you may not want inside the motorhome.

That rack does not look all that heavy duty to me. The problem may be that the 400lb bike and the hitch at 80 lbs mounted 10 feet behind the rear axle will be like a lever and may remove more weight from the front axle than would be considered safe. Plus the 480lbs bounching 10 feet behind the rear axle will multiply the weight and could fail the rack your using causing the bike to end up on the road. Without having the motorhome run over scales to get the before bike and after bike weights your not going to know for sure what the weights hanging out back will do to the front steering. I would think a trailer like Desert Captin is describing would be a lot safer for your transporting. Just my opinion as an Ex-Weigh-It-Guy.

The only way to know for sure is load it up and get to a {hopefully}, nearby scale. My guess is you will be so light on the front axel as to be dangerous not to mention well over the rear axel rating.

IMHO: Adding 500 extra pounds on the rear end just is not going to work. you might want to look at some of the motorcycle trailers that are available. Here are a couple of shots of the Kendon single that I use. It stands up and stores taking very little space {at your site or back in the garage}:





I added the 2 X 8's to provide a nice stable place to put my feet when walking the bike {Harley Dyna Super Glide - 700#} on or off: