What is the purpose of a shock absorber?
A shock absorber for a wheel limits the rapid movement of the wheel when it hits something , like a pot hole. Without it, the tire would bounce like a rubber ball. A good shock absorber prevents this. It is quite easy to notice a car with bad shocks absorbers. When it goes over a bump in the road, the back end will continue to bounce many times. This can be dangerous if the car is going fast as it is quite possible that the driver could lose control.