To determine the gross vehicle weight rating of a Ford, use a simple formula composed by the National Truck Equipment Association that accounts for the weight of the vehicle, the curb capacity and the uplifted materials. When any truck leaves the factory, the GVWR appears on the plate that is attached permanently to the vehicle.
The gross vehicle weight includes everything on the truck, such as the chassis, the body, the driver and all fluids at their fullest level. To determine the weight of everything in the truck, data books are the best available source for information. Users should also allow for 150 pounds extra per person when calculating the GVWR. The only thing not included in determining the GVWR is the net payload of the vehicle. Once the maximum net payload of the vehicle is determined, a weight distribution must be calculated to be sure that the gross axle weight rating is not exceeded; otherwise, the vehicle's axles may collapse.
The primary reason for calculating the GVWR for any vehicle is safety. Any excess of weight puts stress on the vehicle that may prove difficult to control while driving on the road; or, it may even cause the brakes to fail and overheat.