I wouldn't count both the fresh water and grey water tanks. Almost always when I fill one, I empty the other, Then in the course of daily life the water moves from fresh to grey.
As for weights, I have a 2002 Hymer B584. I have had it weighed with driver, one tank full, full fuel tank, 2 gas tanks (a 13kg and an 11kg), and all my stuff inside, and there is a lot of stuff because I full time. And a bike on the back. It comes to less than 2800kg.
As for weights, I have a 2002 Hymer B584. I have had it weighed with driver, one tank full, full fuel tank, 2 gas tanks (a 13kg and an 11kg), and all my stuff inside, and there is a lot of stuff because I full time. And a bike on the back. It comes to less than 2800kg.