You need 13% to 15% of the FULLY LOADED TT weight on the TV tongue. Almost always the TV limit is its tongue weight spec. Not the receiver spec, the VEHICLE spec. When we went looking in 2010 Ford, Chevy, in fact almost every SUV or pickup we looked at had a spec the dealer could easily find.
BUT
We were told Toyota doesn't spec tongue weight so they can avoid any litigation from folks using them to tow. True, no idea, but certainly Toyota was unable to provide any proof of specs in ANY printed literature. Personally we crossed Toyota off as a potential TV. Hopefully you will have better luck.
Do remember if salesman says anything, it does not count unless he can back up his works with manufacturer documentation.
