Generally speaking, the limits are put in place not for what a vehicle can pull, but rather what a vehicle can safely stop. I am an avid RV guy and believe it or not most travel trailers are pulled overloaded. Do your research, but the two main weights are your total pull weight and your bumper weight. Your weight can be made safer through using swaybars and a stabilized load and also using electric brakes. But there is no excuse in exceeding the weights. Also, take your time. After determining that all is safe and your equipment is working properly, then take a short pull and check hubs and brakes for excessive heating and operation. Nothing worse than seeing a guy's rig burning to the ground on the side of the interstate (I have).