A control arm is a bar that has a pivot at both ends. Most of the car has several, including the upper control arm and the lower control arm. Control arms are part of the suspension system. They attach suspension members to the chassis and manage the motion of the wheels so that it synchronizes with that of the body of the car. They work with bushings, which are cylindrical linings that reduce friction and restrain the auto parts from going every which way.
As a result, you are able to go on joy rides without feeling sick and dizzy, as there are control and smoothness in the movement of the car. The control arms should also be lubricated at every oil inspection. Handling and steering could become erratic if the control arms are malfunctioning and the unsteady movements of your car could take away your riding comfort.