For comparison, a conventional travel trailer places only 10 to 15 percent of its weight on the hitch ball as tongue weight.

For comparison, a conventional travel trailer places only 10 to 15 percent of its weight on the hitch ball as tongue weight.
The two most common sizes on RVs are 20 lb and 30 lb, and some larger trailers use 40 lb cylinders.
Motorhome vs Fifth Wheel for Full-Time Living.
For comparison, a conventional travel trailer places only 10 to 15 percent of its weight on the hitch ball as tongue weight.
https://freedomroadliving.com/motorhome-vs-fifth-wheel-for-full-time-living/