Both the truck dealer and the TT dealer are working strictly by the published numbers. Unfortunately the Max Cargo capacity cannot be published because it is vehicle dependent.
One thinks of the 4x4 as being a rough tough tow vehicle and it can be. However, as stated, then you add the 4x4 option to the standard pick up you drop the max cargo capacity. In my case it also dropped the towing capacity by 500 lbs.
Since neither the TV dealer nor the TT dealer knows your vehicle's max cargo and they certainly do not know how much camping "stuff" you need. They assume the buyer knows what they are buying.
Both the TV and TT dealer do know that they sell and see a lot of half tons pulling a lot of TTs and a lot of 3/4 tons pulling a lot of 5vers.
When I was shopping for my TT I had two dealers at and RV show tell me there was no way to "enhance" my half ton so I could pull a 5ver. They said I would need a 3/4 ton or bigger. Later when I was shopping for my TT, the dealer asked what my TV was, he said the DW's mini-van we arrived in would not work.
The dealer can help you from making and obvious blunder but they have no idea how well suited your TV is to your TT camping style. Unfortunately, many new TT buyer do not know either.
