how to determine the maximum towing weight of a vehicle
4200kg - Gross train weight, the combined maximum allowable. mass of the vehicle and trailer. 1250kg & 1300kg - Maximum axle loads front and rear respectively. The manufacturerâs recommended maximum towing capacity for your vehicle is the gross vehicle weight subtracted from gross train weight. The vehicle identification plate detailed in the above picture has a towing capacity of 1695kg. 4200kg â 2505kg = 1695kg.