Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Coil Springs and other Auto Parts topics.
Torsion bars use a similar concept to coil springs, but in a different application. One end of the torsion bar is anchored to the frame of your car while the other end is secured to a “wishbone” or control arm. The control arm takes the force of the vertical motion of the wheel when you hit a bump and transfers the force to the torsion bar by acting as a lever. This levering action twists the torsion bar (like a coil) to absorb the energy. Like a coil, the torsion bar has "memory" and wants to return to its original shape - it is this resistance that helps it absorb the energy from the vertical movement of the wheel.