What is a control arm?
Control arms are a key part of your car’s overall stability and driving performance.
Your vehicle has two specific types of control arms: upper and lower. They are one of the main components of your suspension system and connect the front wheel assemblies to your vehicle frame, allowing you to drive your vehicle.
When should I replace the control arm on my car?
Control arms are made to withstand a lot and often only experience damage due to frame stress or a faulty bushing or ball joint. If you experience any of these common symptoms of a bad control arm, then it’s time to visit a mechanic:
Uneven tire wear: When your control arm needs replaced, often you’ll experience uneven tire wear as a result. The wear usually occurs on the inner or outer edges of a tire’s tread, which is due to alignment issues.
Unstable steering: This can be more prominent if you’re on uneven terrain or surfaces. A wandering steering wheel—pulling to one side—or consistent vibrations may be indications that your alignment is off or that your control arm is starting to fail.
Popping sounds: Considered an early sign of a faulty control arm, a popping sound will happen if you hit a pothole or speed up. This signals that your ball joint or bushings are the culprits, and in turn, your control arm may face damage.
How often should a control arm be replaced?
Both upper control arms and lower control arms should be replaced every 90,000 to 100,000 miles. As control arms can wear and bend over time, it’s important to routinely inspect your vehicle for signs of early damage.
Various factors can shorten the lifespan of a control arm, including poorly maintained roads, uneven terrain, heavy loads, poor car maintenance, and car accidents.
Can I replace control arms myself?
Yes—upper and lower control arms can be replaced at home. That said, this type of repair will take a mid-level understanding of car parts and your vehicle’s steering system. If you are unsure of your mechanical DIY skills, it’s best to take your car to a licensed mechanic for a control arm replacement.
Keep in mind: Even if you replace your car’s control arm(s) at home, you will still need to take it to a mechanic or dealership like Nissan to have a wheel alignment to prevent tire damage.