What is the main role of a vehicle's suspension system?

The main role of a vehicle's suspension system is to support the vehicle's weight and provide stability. The suspension system is crucial as it connects the vehicle's body to its wheels, allowing for effective handling and comfort during driving. It helps absorb shocks from the road and keeps the tires in contact with the surface, which improves traction and control. This stability is essential for safe driving, particularly when navigating turns or uneven surfaces.

While improving fuel efficiency, controlling engine temperature, or enhancing speed are important aspects of vehicle performance, they are not the primary functions of the suspension system. The suspension's primary focus is on supporting the vehicle's structure and ensuring that it handles properly on various terrains, thus making it vital for overall vehicle safety and performance.