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The control arms are one of the core components of a suspension system and serve as the direct connection points between the front wheel assemblies and the vehicle's frame. The control arms allow a driver to steer a car while also guiding the wheels up and down with the road surface.
Automotive vehicles usually have between two and four control arms, depending on the vehicle suspension. However, most modern cars only have control arms in the front wheel suspension. Larger or heavy-duty vehicles like trucks may have control arms in the rear axle.
Control arms are a commonplace item in all vehicles made in the last 40 years, with only 4-wheel drive and heavy duty trucks sometimes being the one, rare exception. Understanding the role of this component in the suspension system and overall control of your vehicle can help you with the maintenance of your car.
What is the lifespan of a control arm? If a control arm needs exchangeable rubber bearings and a ball joint, it is intended to last only as long as its least effective component. Variable, but you can expect it to last between 50,000 and 80,000 miles.
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