What is the Rated Towing Mass?
2 Answers
Towing mass refers to the combined weight of the trailer and the cargo it carries. The rated towing mass is a theoretical value, also known as the "nominal towing capacity." It represents the total mass of the vehicle and the towed object, which includes the mass of the vehicle itself plus the mass of the towed object. The towing force should be applied to this total mass. Therefore, when calculating the towing mass tonnage, the mass of the towed object should not be considered merely as the nominal towing capacity. Additional information: Below are some key points regarding the rated towing mass: 1. Total vehicle mass for license purposes: This refers to the vehicle's curb weight + the rated passenger capacity (number of passengers in the cabin × average weight of 65 kg per person). 2. Curb weight: The mass of the vehicle itself. 3. Rated cargo capacity: The standard mass of cargo the vehicle is designed to carry. 4. Rated towing mass: The total mass a semi-trailer can tow, including the mass of the towed vehicle and cargo. This is the sum of the mass of the tractor (excluding the driver and fuel), the mass of the towed vehicle, and the mass of the cargo.
When I bought this pickup truck, I specifically inquired about the Gross Trailer Weight Rating (GTWR), which refers to the maximum total weight limit the vehicle is allowed to tow, including both the trailer itself and all its contents. This number is indicated on the vehicle registration certificate, calculated by the manufacturer based on factors like chassis strength, engine power, and braking performance. For example, if my vehicle is rated for 2000kg, then the combined weight of the RV trailer, furniture, and water tanks must not exceed this limit. Exceeding it can cause the front of the vehicle to lift, increase braking distance, raise the risk of rollovers during high-speed turns, and potentially damage the engine due to overload. Before towing an RV, it's advisable to weigh the actual load and leave some margin for safety, as unexpected situations often arise.