"That Roaring Noise" - The Sound of Wheel Bearing Failure: Causes, Symptoms, and Solutions

What Causes the Sound of a Failing Wheel Bearing?

The distinctive roaring noise associated with a failing wheel bearing is caused by metal-on-metal friction within the bearing. This friction occurs when the bearing loses its lubrication, which allows the bearing's inner and outer races to contact each other.

• Lack of Lubrication: The most common cause of bearing failure is insufficient lubrication. Lubrication helps reduce friction between the bearing components. When lubrication is inadequate, the bearing surfaces grind against each other, creating a grinding or roaring noise.
• Contamination: Dirt, dust, and other contaminants can enter the bearing and cause it to fail prematurely. Contaminants can damage the bearing's seals, allowing moisture and other contaminants to enter the bearing.
• Wear and Tear: Over time, the bearing's components wear out. Wear and tear can lead to increased clearance between the bearing components, which can cause them to slip and grind against each other.
• Improper Installation: Improperly installed bearings can also fail prematurely. If the bearing is not installed correctly, it may not be properly aligned or lubricated, which can lead to premature failure.

Symptoms of a Failing Wheel Bearing

In addition to the characteristic roaring noise, there are other symptoms that can indicate a failing wheel bearing:

• Grinding or growling noise: A grinding or growling noise when turning or cornering can indicate a failing wheel bearing.
• Vibration in the steering wheel or seat: A vibration in the steering wheel or seat when driving can also be a sign of a failing wheel bearing.
• Increased play in the wheel: If the wheel has excessive play, it may indicate a failing wheel bearing.
• Worn tires: Uneven tire wear can also be a sign of a failing wheel bearing.

Consequences of Ignoring a Failing Wheel Bearing

Ignoring a failing wheel bearing can lead to several problems:

• Increased risk of accident: A failing wheel bearing can cause the wheel to seize or lock up, which can lead to an accident.
• Damage to other components: A failing wheel bearing can damage other components, such as the axle, hub, and brakes.
• Premature tire wear: A failing wheel bearing can cause the tire to wear prematurely.

Solutions for a Failing Wheel Bearing

The only solution for a failing wheel bearing is to replace the bearing. Replacing a wheel bearing is relatively inexpensive and straightforward. However, it is important to have the bearing replaced by a qualified mechanic.

• Cost of Replacing a Wheel Bearing: The cost of replacing a wheel bearing can vary depending on the make and model of the vehicle. However, the average cost of replacing a wheel bearing is between $200 and $400.
• Time to Replace a Wheel Bearing: Replacing a wheel bearing typically takes about 2-3 hours.

Common Mistakes to Avoid When Replacing a Wheel Bearing

• Overtightening the bearing: Overtightening the bearing can damage the bearing and cause it to fail prematurely.
• Not torquing the bearing correctly: It is important to torque the bearing to the correct specifications. If the bearing is not torqued correctly, it may not be properly seated, which can lead to premature failure.
• Using the wrong type of lubricant: It is important to use the correct type of lubricant for the bearing. Using the wrong type of lubricant can damage the bearing.

Pros and Cons of Replacing a Wheel Bearing

• Pros:
  • Improved safety: Replacing a failing wheel bearing can improve the safety of the vehicle.
  • Reduced noise: Replacing a failing wheel bearing can reduce noise levels in the vehicle.
  • Improved handling: Replacing a failing wheel bearing can improve the handling of the vehicle.
• Cons:
  • Cost: Replacing a wheel bearing can be expensive.
  • Time: Replacing a wheel bearing can be time-consuming.

Call to Action

If you hear a roaring noise or experience any other symptoms of a failing wheel bearing, do not ignore the problem. Ignoring a failing wheel bearing can lead to several problems, including an increased risk of an accident. Have the bearing replaced by a qualified mechanic as soon as possible.

Additional Information

• Wheel Bearing Replacement Intervals: Wheel bearings typically need to be replaced every 50,000 to 100,000 miles. However, this interval may vary depending on the make and model of the vehicle and the driving conditions.
• Average Cost of a Wheel Bearing: The average cost of a wheel bearing is $50 to $150. However, this cost may vary depending on the make and model of the vehicle.
• Labor Cost to Replace a Wheel Bearing: The labor cost to replace a wheel bearing is typically $100 to $200. However, this cost may vary depending on the complexity of the job.