If a wheel bearing becomes worn out or damaged, it can affect the wheel's ability to rotate smoothly, independently and securely. This can lead to unsafe driving conditions and is something that should be addressed immediately. Some wheel bearings are equipped with ABS or speed sensors. If a bearing is worn or damaged, the ABS system may not work properly, also affecting the safety of a vehicle. A worn wheel bearing can disturb the alignment of the vehicle creating additional issues with tires and other suspension parts over time.

When the seal on a wheel bearing is compromised, the noise you may be hearing becomes louder over time. Seals are critical components for the longevity of a bearing. If air, dust, salt, sand, etc get inside, they can contaminate the lubricants and other components. Once this occurs, it can break down the lubricants and other components causing friction. If a bearing gets really hot, cages and seals could be deformed and lead to bearing lock-up. This may feel like the parking brake has been applied and you may notice resistance when you accelerate. You'll want to have this checked out immediately.