If you enjoy smooth rides and accurate steering control when you drive, a sturdy, hardworking control arm has much to do with this, along with other suspension parts. This arm keeps the wheels moving in sync with the auto body, making the vehicle handle pretty well. Due to the stress, however, it may be damaged or can become weak over time. The bushings attached to it may wear out, causing the suspension to make noise. A faulty suspension arm may result in loss of precision and poor handling. To bring back the good performance of your suspension, you’ll have to get rid of the busted arm and put in a new one.
When in the market for a new control arm, you have to:
- Know the type of suspension system used in your vehicle and the suspension arm design that will match the specs and requirements of your vehicle.
- Search for a high-quality replacement. It has to be made from high-grade materials and has to be tested to meet industry standards.
- Shop around and compare for the best prices. The price range varies according to the type of suspension system, arm design and features, brand, and seller.
Types of suspension system
There are basically two types of suspension system that use control arms.
Double wishbone suspension. A-shaped control arms are used in this suspension system.
Macpherson strut suspension. Only one control arm is used in this kind of suspension—instead of an upper arm, a vertical telescopic strut that’s linked to a coil spring is used.
Compared to the double wishbone suspension, the Macpherson strut has a more restricted vertical movement. It is less complex, and in terms of cost, it’s less expensive. Double wishbone suspension, on the other hand, is quieter but also more complicated. It allows vertical movement. Small, compact vehicles are typically equipped with Macpherson struts, while double wishbone suspension is more commonly used in larger, more luxurious vehicles, although MBs, BMWs, and Porsches may sometimes be designed with Macpherson strut suspension.
Control arm design
Unitized. This arm has a built-in bolt joint. It comes in a single unit and not a separate piece. So when the arm or ball wears out, the whole unit is replaced.
Press in. This kind is used in wide-range applications, though this seems more fitting for heavier vehicles such as trucks, vans, and SUVs. This arm design uses a bigger ball joint.
Bolt In. This design is used in Macpherson strut suspension. It comes with a stamped strut-type arm body.