The job of a car suspension is to maximize the friction between the tires and the road surface, to provide steering stability with good handling and to ensure the comfort of the passengers. Suspension systems serve a dual purpose — contributing to the vehicle's road holding/handling and braking for good active safety and driving pleasure, and keeping vehicle occupants comfortable and a ride quality reasonably well isolated from road noise, bumps, and vibrations. After supporting several tons of metal year after year, eventually the shocks will wear out and suspension repair will be necessary.
Having a bad suspension can greatly affect your ability to control the vehicle, especially when stopping or turning, so it's in your best interest not to ignore this part of auto maintenance. How do you know when it's time for suspension repair? Here are 5 sighs to look for. Car rides rough, drifting or pulling during turns, dips or nose dives when stopping, uneven tire tread, damage oily shocks. Any four wheel vehicle needs suspension for both the front wheels and the rear suspension, but in two wheel drive vehicles these can be very different configuration. The design of front and rear suspension of a car may be different. In its most basic form, suspension consists of two basic components: Springs and shock absorbers. Springs come in three types; they are coil springs, torsion bars and leaf springs. Shock absorbers dampen the vertical motion induced by driving your car along a rough surface and so should technically be referred to by their proper name - dampers.
If your car only had springs, it would boat and wallow along the road. Shock absorbers perform two functions. They absorb any larger-than-average bumps in the road so that the upward velocity of the wheel over the bump isn't transmitted to the car chassis. But secondly, they keep the suspension at as full a travel as possible for the given road conditions.