Spring and damper assemblies are safety-relevant chassis components. In the interplay of suspension and shock absorbers, the spring legs compensate for unevenness of the road which acts as impacts on the vehicle in order to keep the body at a predetermined height and to prevent a rocking. In addition to driving safety, the comfort is also directly dependent on the connecting elements between the suspension and body, between unsprung mass (axle body, brakes, wheels) and sprung body mass. The aim is to achieve the best possible road contact between the wheels during acceleration, braking, straight and cornering. Functionally, the springs are used to catch impacts and impacts. During spring compression, the spring is compressed, and the shock absorber is prevented from oscillating when the spring is released. Typical designs are friction dampers, lever shock absorbers, single-tube dampers and two-tube dampers. In the true sense, shock absorbers are shock absorbers that convert the energy of the movement into heat energy. Upset noise, multiple ringing, fluttering steering and uneven tire wear are indications of defective shock absorbers.