From the Jayco website:
Unloaded Vehicle Weight:
The weight of a vehicle as manufactured at the factory. It includes full engine and generator fuel tanks and fluids, if applicable. It does not include cargo, water, propane, or dealer-installed accessories. It may or may not include factory installed options. Be aware that some manufacturers weigh each unit to determine UVW, while others provide only the average or estimated weight for each model.
There must be some wiggle room from the reg we have been talking about. Dexter comment about the load carrying capacity limited to the weakest component may speak to this. Even the reg allows for the subtraction of pin weight from the GVWR. I cannot think of a instance where a TT of 5r will ever have the total GVWR on the wheels
