I have a 99' Eagle 283G. I have towed a 5x10 single axle trailer with an atv and hunting equipment on it. The previous owner said that he towed a compact car with a tow bar.
If you get under the rv and look, the frame is extended nearly 5' to support the rear bedroom. I have a full size receiver hitch bolted up just under the rear bumper. I don't think it would be wise to put more than 250# tongue weight on the rear frame. I would not pull a utility trailer carrying much more than 1500# of cargo. You could probably tow-bar a compact car weighing up to 4000#. Keep in mind that you will probably be exceeding the overall gvw rating of the cut-away chassis specs if your class c if it is already loaded for traveling and now you are going to tow something.
This is just my opinion but I am a retired civil engineer. I wasn't thrilled with the quality of the butt welding done to the frame but it does have a plate bolted to the frame and extension. It has held up well for 15 years with 61,000 miles of operation.
Also, Jayco put a lot of storage compartment space outside down each side of the rv. You don't want to overload the rv with heavy things in these compartments and then start towing something.
I am installing airbags on the rear and front of my rv this weekend. I am not doing this to increase carrying capacity. But rather to stabilize the ride and cut down on the rocking and swaying. I only plan to put about 25 psi in each air bag.
Jeff and Deidra
1999 Jayco Eagle 283G Motorhome
2015 Ford F350 Lariat Ultimate
2014 Heartland Cyclone 3110 Toyhauler
Baton Rouge, Louisiana