How do brakes, tires, and suspension of a combination vehicle perform best?

The performance of brakes, tires, and suspension in a combination vehicle is optimized when the vehicle is legally loaded. This means that the weight placed on the vehicle adheres to the regulations set by transportation authorities, ensuring that the load is within the safe and permitted limits.

When a vehicle is legally loaded, the weight is distributed properly across the axles, which enhances stability and control. Proper loading helps to maintain balance, which is crucial for braking efficiency and tire grip. Legally loaded vehicles tend to have a lower risk of tire blowouts, as the tires are not overburdened or underutilized, thus leading to more longevity and better overall performance during driving.

In contrast, poorly distributed loads can lead to uneven strain on the suspension and tires, increasing the risk of accidents. An empty cargo area may result in less traction and control, particularly in adverse weather conditions, due to the lack of weight on the drive wheels. A low center of gravity, while beneficial, is not necessarily related to the legal loading of a vehicle and thus does not directly address the core consideration of load compliance for optimal performance.