The spring component in a suspension system can come in a variety if different configurations to suit any need the driver might have. Usually coming in three varieties. Coil Springs, which are what most people are familiar with when they think of a spring of any kind. Leaf springs are found in most heavy duty trucks, resembling leaves stacked on top of each other. Lastly, torsion bars, which mimic the vertical compression of a coil spring via horizontal twisting. Automotive springs come in a wide variety of shapes and sizes but mostly serve the purpose of bearing driving loads and providing a predictable and smooth driving experience.