What is the Standard Measurement Method for Curb Weight?
2 Answers
Curb weight is measured using the following standard methods: Measurement using a weighbridge: Drive the vehicle slowly and steadily onto the weighbridge. After it comes to a complete stop, measure the curb weight/unladen weight. For trailers, first measure the curb weight of the vehicle combination and the curb weight of the tractor, then calculate the difference between the two to determine the trailer's curb weight. To measure the trailer's unladen weight, first measure the unladen weight of the vehicle combination, then subtract the driver's weight (calculated as 75kg) and the registered curb weight of the tractor. The resulting difference is the trailer's unladen weight. Measurement using an axle (wheel) load scale: When using an axle (wheel) load scale, drive the vehicle slowly and steadily onto the weighing plate axle by axle (treating tandem axles and tridem axles as single axles). After the vehicle comes to a complete stop, measure the axle load. The sum of all axle loads is recorded as the vehicle's curb weight/unladen weight. For measuring the curb weight/unladen weight of trailers, follow points 2 and 3 of the weighbridge measurement method described above.
My understanding of curb weight comes from years of driving experience. The measurement method for curb weight follows fixed standards: manufacturers weigh the vehicle on a large, precision electronic scale before it leaves the factory. This process includes all body components, interior trim, a 90% full fuel tank, and all necessary fluids such as engine oil, coolant, and brake fluid. The spare tire and onboard tools must also be included. The measurement conditions are strict, typically conducted in a controlled factory environment to avoid external interference and ensure accurate, reliable data. This weight is extremely important for daily driving. For example, when I go on long trips, I refer to the curb weight to estimate cargo capacity. My SUV has a curb weight of 1,800 kg, so I know I can carry up to 400 kg of people and luggage. Exceeding this limit leads to faster fuel consumption, worse braking performance, and even potential accidents. Understanding these measurement details helps me grasp the core of safe driving.
