ANSWER: The suspension of your vehicle is light. You may want to use airbags. Try putting 400 lbs on the back bumper and see if the bed tilts.
Vehicle carrying capacity is the weight limit a listed vehicle’s suspension can support level using a Versahaul. Exceeding the Vehicle carrying capacity may cause the vehicle to become backloaded and may become unsafe to drive. Use suspension enhancing devices such as air bags or auto leveling suspension to increase the carrying capacity. The weight of the Versahaul carrier has already been considered.
If your vehicle is equipped with Autoride Suspension or air bags then you will be able to carry more than the carrying capacity.