wikipedia id - The spring is a component in car suspension systems. The spring has the function of absorbing shock and vibration from the road wheels so as not to be forwarded directly to the vehicle body. In addition, the spring is also useful to increase the power cengkerem tire against the road surface. There are three common types of springs used vehicles, namely spring coil (coil spring) which is made from steel rod and has a spiral shape. The second form, the spring leaf (leaf spring) made of steel blades are bent and flexible. The third type, called by the name of torsion bar springs (torsion bar spring). This type of spring steel rod formed from elastic to torsion.