Volkswagen Polo Suspension Lower Arms With Ball Joint

A control arm's purpose is straightforward. It connects the steering knuckle to the frame and stabilizes the vehicle by allowing the chassis and the wheels to move in unison while the vehicle is in motion. Ultimately, control arms help achieve coordination between the suspension and steering systems, dampening the ride and giving the driver the ability to maneuver the vehicle. The control arm's swiveling ball joint serves as the steering system's pivot point, allowing the vehicle to be turned in either direction while moving forward or backward. The hinge joint on the control arms' frame side keeps the wheels in contact with the ground, whether traveling over smooth pavement or treading over bumps and potholes on the road. Both sides of the control arm work together to grant the movement necessary for a vehicle to safely and adequately operate on roads.