What does lower control arm do?
It provides a strong connection between the wheel and the suspension system. It keeps the wheel in sync with the rest of the suspension system. For example, what happens when one of your front wheels hits a pothole? The lower control arm helps the wheel move up and down with the suspension system.
What do rear lower control arms do?
What do the rear lower control arms do? Rear lower control arms, along with the upper arms, control axle rotation. All of the forces that accelerate the car pass through the rear lower control arms: The tires rotate on the pavement, moving the axle forward.
How often do control arms need to be replaced?
Over time, the control arm assembly can become worn or bent. These assemblies normally wear out between 90,000 and 100,000 miles. They can wear out faster if you go over a large pothole or are involved in a car accident. Various parts of the assembly may wear out as well, such as the bushings or ball joints.