Product Information
Referred to as a wishbone by BMW, in the upper position, allows for full camber correction via an adjustable ball joint
Control arms are a common wear item on higher mileage vehicles. Worn control arms will develop play in the ball joints or bushings which can cause a loss of steering performance as well as sound from the front end. Always replace controls arms in matched pairs.
Suspension Control Arm
Control arms are crucial link in a vehicle's suspension connecting the suspension to a vehicle's subframe. These pieces are usually hinged to allow for suspension to travel and articulate as the vehicle rides over obstructions in the road and while the vehicle turns. Many vehicles such as those with independent suspensions have multiple links and feature several connection points and arms to offer better ride quality and comfort.
As bushings and joints in a control arm begin to wear you may notice a looseness feel in your suspension. And while many arms have replaceable and serviceable individual components, many still require the replacement of the entire arm. Below are signs of when a replacement control arm may be needed:
Suspension Control Arm Failure Symptoms
Play in suspension joints where these arms meet the subframe and/or knuckle
Buckling noise emanating from the suspension
Uneven tire wear
Inability to properly align vehicle
Shutter or vibration coming from the steering wheel at highway speed
Wandering or pulling sensation from side to side felt on the steering wheel
