I understand but since the tent is atop of the vehicle roof that would make 800lbs atop of the SUV. A lot of people keep mentioning the weight limits.There is a lot of math/science/engineering/equations regarding static/dynamic/surface area/forces that are hard to explain to the average consumer. If you look at tent manufacturer FAQ's they can explain it better. You really only have to worry about safely carrying your tent in dynamic situations. Static weight is almost is a non issue, as tent manufacturers have made tents strong enough to house 4 200lbs people.