Control Arms and Control Arm Bushings: Everything You Need to Know

Control arms and control arm bushings may not be well-known components in your vehicle, but they play a crucial role in its suspension system. In this blog, we will discuss what control arms and control arm bushings are, how to spot signs of wear and when to replace them, and the options available for control arm replacements.

When it comes to replacing these components, you have a choice between repair and performance parts. To help you get a better idea of what these components are, what they do, and the difference between repair vs. performance parts, we’ve written this explainer:

What Are Control Arms?

Control arms are sturdy metal components that connect your car's frame to the wheel hubs. Shaped like wishbones, these components bear significant weight and must be made with strong materials to withstand the forces exerted on them. If control arms wear out or fail, they can cause damage to your vehicle and make it unsafe to drive.

What Are Control Arm Bushings?

Control arm bushings are hard rubber bumpers that cushion the connection between control arms and other components. As the control arms move, the bushings prevent them from rubbing against other parts and creating heat friction that can lead to rapid wear. While small, these bushings absorb shocks from the road and can wear out over time.

Signs You Need to Replace Control Arms or Bushings

It's essential to recognize early warning signs of control arm and control arm bushing issues to prevent more significant problems. Look out for the following indicators:

• Vibrations while driving. If you feel vibrations while driving on smooth surfaces, it could be a sign of control arm or control arm bushing issues.
• Clunking noises. Unusual clunking noises near a wheel can indicate a problem with the control arms.
• Uneven tire wear. If your tires wear out unevenly, it could be due to loose or broken control arms or bushings.
• Car pulling to one side. While many assume this is an alignment issue, it can also be a symptom of control arm or control arm bushing failures.
• Visual damage. Regularly inspect your control arms and bushings for signs of wear, such as cracks, looseness, or misalignment. If you notice any damage, it may be time for a replacement.

OEM vs. Performance Control Arms and Bushings

When it comes to replacing control arms and bushings, there are two main options: OEM (repair) parts and performance parts. Understanding the differences can help you make the right choice for your vehicle:

OEM Control Arms and Bushings

OEM parts, also known as repair parts, are designed to match the specifications of the original components. However, because other suspension components may have worn down by the time control arms need replacement, even OEM parts can wear out faster than the original ones.

Performance Control Arms and Bushings

Performance parts, also called upgrade parts, typically exceed manufacturer specifications. These parts are developed after the vehicle has been on the market, allowing manufacturers to identify and improve flaws in the original design. Performance control arms may address issues such as weight-bearing angles to enhance overall performance.

Suitable For Toyota Crown Under Track Control Arm 48640-0n010，43620-0n010

Choosing Between OEM and Performance

The choice between OEM and performance control arms and bushings depends on your budget and performance expectations. While repair parts may save you money initially, performance parts tend to last longer and can improve suspension performance.

Pros and Cons of OEM Control Arms and Bushings

Pros:

• Less expensive
• Exact match with OEM part
• Made to manufacturer’s specifications

Cons:

• May have the same design flaws that caused the original to wear down or break
• Could be made with inferior materials to save costs
• Inferior performance to upgrade parts

Pros and Cons of Performance Control Arms and Bushings

Pros:

• Often made with superior materials
• May improve upon OEM design
• Exceeds manufacturer’s standards
• Superior suspension performance

Cons:

• Can be more expensive (but not always)
• May require different hardware like nuts and bolts
• Dealership may not be willing to install them

Why Control Arms Wear Out

Control arms are prone to wear due to various factors:

1. Moving parts: Continuous movement causes friction, leading to eventual wear and tear.
2. Materials: Car manufacturers often use cheaper materials for small components like control arms, compromising their durability.
3. Driving style: Aggressive driving behaviors, frequent accelerations, and hard stops put additional stress on suspension components, including control arms.
4. Suspension faults: A faulty suspension system puts extra strain on control arms, leading to premature failure.
   
   Why Control Arm Replacements Are Expensive
   

Dealerships typically use Original Equipment Manufacturer (OEM) components for repairs, which are the same as the original parts on your vehicle. While OEM parts are reliable, they are often the most expensive option. Additionally, reinstalling the same component that failed may not be the best long-term solution.

Don’t Wait To Replace Your Control Arms

Remember: the longer you wait for a control arm replacement, the more at risk you are and the more you’ll have to pay for repairs down the line. Order your control arm replacements online or by phone.