The complete suspension system is designed to protect the vehicle’s body from the vibrations and shocks of the road when driving. Suspension systems vary from vehicle to vehicle but can consist of coil and leaf springs, axles, shock absorbers, ball joints, arms and rods and connect the chassis to the wheels. When driving, the suspension ensures that the vehicle’s wheels are kept firmly on the ground with no sideways or upwards movement.
The suspension system receives the pressure from bumps in the road up through the springs that are attached to the wheel. Anti-roll bars are fitted to the front suspension and are used to stop the vehicle rolling. These twist upward when they feel the road vibrations in order to minimise shock.
There are also control arms which are connected to the vehicle using bushes. Their job is to keep the tyres on the ground and prevent tyre hop. Other parts also form part of the suspension.
Failure of part of the suspension system would be indicated by a less comfortable ride as shocks would vibrate through the vehicle and be felt by passengers. Other issues can include uneven tyre wear or tyres rising from the road.