What does a shock absorber do? All cars have springs that control the height of a vehicle. Shock absorbers (shocks) control those springs. If your shock absorbers are faulty the spring will bounce your tyre off the road. If my brakes are in good condition, then should I have a problem stopping? You will still stop, but a worn shock absorber will affect the efficiency of your stopping distance. Your brakes simply slow the rotation of your wheels. How soon you stop depends on how much contact your tyre has with the road. “That’s the job of your shock absorbers.” One worn shock absorber can increase your stopping distance by up to 2 metres at 50 kph.