Most cars use coil springs. At the front is this spring around the shock absorber, behind it is usually on the support arms. A spring determines the ride height of a car. The spring is a spiral shape and prevents the unevenness of the road surface from being passed on. The suspension can be linear or progressive to the application. A linear spring has a constant damping over the entire spring. Where a progressive spring as the load increases, the spring becomes stiffer.
A smooth spring ensures that the car tilts a lot in the curves so that the weight is moved to one side and the car runs uncomfortably. Harder springs provide more grip in sharp turns. However, excessively hard springs can cause the wheels to lose contact with the road surface in poor road conditions. A good balance and adjustment is therefore important in taking into account the driving experience of the customer.