Yep.............................had the same issue the first trip away in our Cape York Explorer Extreme ( 10 years ago ), ran it over the weigh bridge at work and it was about the same as yours.........300kg !!!!!!!!!!!!!!!!!!
We now repack the heavy items to the rear and it's helped a bit but I would guess it's still around the 200 to 220kg mark.....................legal but your not going to be lifting it up by yourself any time soon
All hard floor campers with sizable front boxers are in this league, it's just the way it is
, but a lot of manufacturers will tell people otherwise when making the sale !!
It comes as a bit of a shock the first time you see the real numbers hey, but that's life