While most drivers have heard of a shock absorber. Very few realize what they do and also how important they are for safety. Like all moving parts of a car, a shock absorber can wear out over time. This makes it necessary to replace it.
Knowing when to replace the shock absorber is not always obvious. The duration of a shock absorber depends on a large number of variants. Car make / model, mileage traveled and type of aggressive driven road surfaces. Depending on the quality of the shock absorber that fits, 4-5 years appear to be approximately the half-life of a shock absorber. With this in mind, a typical car could go through 3 or 4 shock absorber spares in its useful life. The sports or street suspension is reasonable and consider replacing them at some time.
First: What is a shock absorber?
Simply put, the shock absorber controls the unwanted movement of the car body. It does this by controlling the movement of the wheels. The springs absorb shocks and changes in road surfaces. While the shock absorber controls / dampens the movement of the wheels after that. Without them, the wheels of the cars would swing out of control every time they hit. This is not only uncomfortable, but also dangerous! These two things combined make the tires lose contact with the ground.
A selection of typical front and rear shock absorber designs Indeed, the job of the shock absorber is to keep the tires in contact with the road. The way they do vary from one car to another, but in principle it is the same. In sports shock absorber models, the damping is 'firmer', which may be a little less comfortable. What this means is that body movements are controlled more rigidly. Most modern cars use telescopic shock absorbers that feature a piston and valve arrangement inside a tube filled with oil, are hydraulic shock absorbers and, as the wheel goes up, shortens the crash. Oil is forced into the shock through small holes in the piston. This slows down and controls the movement of the wheel as the spring oscillates. Some more sophisticated hydraulics have an additional gas chamber within this arrangement. This allows greater control and 'smooth' the movement. There are also many different types of adaptive or electronically controlled damping systems. It is possible to alter the firmness of the damping can in the movement to adapt to the road surface or the driver's preference.
How to know if hydraulic dampers need to be replaced.
As the shock absorbers wear out, they become less effective. For example, the damping goes less and less. As the effectiveness of hydraulics degrades, it is not always easy for the average motorist to realize this. You can inspect them inside the wheel arches for signs of leakage. Oil stains are a clear sign, you should replace the shock absorber as soon as possible. Wear like this is also an instant break from NCT / MOT. Not all worn shock absorbers leak, so don't rely on that method. Scalloped dives in the tire are another thing to keep in mind at the edges of the tires. Cupping the technical name for this and although other parts of the worn out suspensions can cause damage or wear, it is more common in shock wear.
The shock absorbers and springs of the Cobra, Bilstein and Eibach brands with the best prices on suspensions and offers of damping up to a 20% discount on the CKC autosport online page