Listed base weight?

That is pretty much my point at the end of the day. I only needed to know a close range of the actual vehicle weight given that there are always so many variables. Weight of people, gear, fuel, fluids, and so forth in the trailer or tow vehicle. Being exact here is overkill since I have plenty of range to my "do not exceed" figures. If I go back and reweigh trailer it would likely be 100 to 200 lbs different that previous weigh-in which would not help. Same with the van. The only way to do this with great accuracy is to completely unload van and trailer making sure minimal fuel and fluids are on board and weigh both separately. I would rather go camping.

I really do want to thank the folks for the links and excerpts provided. That was exactly what I was looking for. As you can see I have been a member here since 2003, although an infrequent poster but certainly no novice to towing.