I could literally tow 4 of my trailers before hitting my max capacity. So not pulling a Travel Trailer. BUT on the ranch I've towed 36,000lbs of stone when we were building a retaining wall. It was from one side of the ranch to the other on private roads. Using a huge Triaxle BigTex goose neck. We balanced the weight really well, so it didn't feel bad or appear to make the truck squat much. We determined the weight from the driver of the tractor trailer who delivered it. He said it came in a around 36k on the truck scale.
Corpus Christi, Texas
TT: 2016 40' Chaparral 360IBL at 14000lbs
TV: 2016 F450 Platinum 6.7 CC LWB FX4, B&W Companion Hitch