Your vehicle's suspension system is effectively a complex series of components designed to work together to limit the vibrations and undulations from the road surface, providing a smooth, controlled and comfortable driving experience.
The principle car suspension components include a coil spring and a shock absorber or, as it is sometimes known, a dampener. These shocks and springs work together to dampen down and cushion the vehicle by absorbing the impact from potholes and other minor imperfections in the road. This keeps your vehicle stable and your tyres firmly in contact with the road surface for the maximum amount of time which is essential for your brakes to work effectively. Worn shock absorbers can add up to 2 metres to your braking distance when travelling at 30mph as tyres have less contact with the road.