Which part of the vehicle is most affected by truck overloading?

Overloading a truck can have significant effects on multiple parts of the vehicle, with the tires and frame being the most affected.

Tires: Tires are one of the most directly affected parts of trucks due to overloading. Overloading will cause the tires to bear greater pressure and wear, and the tread will be prone to aging, bulging, and even blowout accidents. This is because the load on the tire exceeds its design range, resulting in increased tire pressure and easy delamination between the carcass plies, thus shortening the service life. In addition, overloading will increase the friction of the tire, aggravate tire wear, and further shorten its service life.

Frame: The frame is the basic structure of the truck. Overloading will increase the bending stress of the frame, especially in the middle of the frame and behind the cab, which are more prone to fracture. The deformation of the frame will not only affect the vehicle's carrying capacity, but may also cause damage to the overall structure of the vehicle, thus affecting the service life and safety of the vehicle.

Braking system: Overloading will significantly extend the braking distance and increase the burden on the braking system. Due to the unreasonable distribution of braking force among the axles, the braking system may overheat or even fail. In this case, the truck is prone to lose control during emergency braking, increasing the risk of accidents.

Suspension system: Overloading will also increase the burden on the suspension system, causing increased wear on suspension system parts (such as springs and shock absorbers), and may even cause damage to the suspension system.

Engine: Overloading will increase the load on the engine, causing it to overheat, increase wear, and even shorten its life. This is because the engine needs to work continuously under high load and cannot effectively dissipate heat, thus affecting its performance.

Overloading of trucks has the most serious impact on the tires and frames of the vehicles, and will also have a negative impact on other components such as the braking system, suspension system, engine and steering system. Therefore, strict control of overloading of trucks is crucial to ensuring traffic safety and extending the service life of vehicles.