ANSWER: The VH-SPORT RO is rated for 600 lbs.
You will need to have a vehicle with a suspension rating and hitch rating to handle this load. The Lexus GX-460′s suspension is rated only for 200 lbs. You will need a heavy duty hitch, Class 4 will work best.
Note: do not exceed your vehicle hitch rating. Most Class III hitches are rated for 500 lbs.
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.