In short, the shock absorber controls unnecessary shock absorber manufacturers movement of the body. It does this by controlling the movement of the wheels. The spring itself absorbs the bumps and changes of the road surface. Then the damper controls/inhibits the movement of the wheels. Without them, the wheels of the car would bounce up and down uncontrollably every time you cross a bump. This is not only uncomfortable, but also dangerous! The combination of these two things will cause the tire to lose contact with the ground. A series of typical front and rear shock absorber designs In fact, the job of the shock absorber is to maintain uniform contact between the tire and the road surface. The way they do this varies from car to car, but the principle is the same. In sports cars, the damping is "firmer" and may not feel comfortable. This means that body movement is more strictly controlled.

Most modern cars use telescopic shock absorbers, which are characterized by pistons and valves in the filling pipe. They call them hydraulic dampers, which shorten the impact when the wheel rises. The oil is forced into the shock absorber through the small hole in the piston. When the spring swings, this slows down and controls the movement of the wheels. Some more complex shocks have additional air chambers in this arrangement. This allows further control and'softening' of the movement. There are many different types of adaptive or electronically controlled damping systems. The firmness of the damping tank can be changed during driving to suit the road or driver's preferences. As shock absorbers wear out, their effectiveness decreases. For example, the damping becomes smaller and smaller. As the impact effect decreases, it is not always easy for ordinary drivers to realize this. You can check them for signs of leakage in the wheel arches.

Oil stains are a clear sign and you should replace the damper as soon as possible. Wearing like this is also an instant  failure. Not all worn shock absorbers will leak, so don't rely on this method. The scallop in the tire is another thing to pay attention to on the edge of the tire. Cupping in the technical name, although other worn suspension parts can cause damage or wear, the most common one is worn shock absorbers. The circled area on the shock absorber shows the dark discoloration of the oil leaking from the seal. Visual inspection is just that. Next, you need to pay attention to unusual noises in the suspension, especially during a series of fast bumps. The audible sign or wear is a quick, dull thumping sound. This noise is the sound of tires bumping up and down on the road.

This is not the actual impact itself) Other noises to be aware of are knocking and rattling, which may indicate that the impact bushing or other suspension bushings may need to be replaced. A longer braking distance is another way to identify worn dampers . The sinking of the front of the car when braking is a sign. Bad turns are another problem. All of these are difficult to evaluate unless you understand the dynamic capabilities of the car. You need to know what they look like and how they change. Having said that, if you think this car is not as easy to drive as before, or on the road is not as safe as before, then please find an excellent mechanic to conduct an impact test. A quick and dirty DIY test that you can try yourself is to simply push the car's wings down hard. Make sure to move fast and see if it rebounds. The working damper will compress, rebound and stabilize immediately. A completely failed damper may bounce several times before it stabilizes again.