Symptoms
- Humming or roaring sound that increases with speed
- Sound is consistent, not rhythmic clicking or clunking
- Noise present on smooth roads too, not just rough pavement
Likely causes
- CommonNormal tread noise from an aggressive or worn tread patternSome tire designs, especially all-terrain or worn tires, are simply louder.
- CommonUneven or cupped tire wearWear patterns like cupping create noise that increases with speed.
- PossibleWorn wheel bearingA bearing issue often gets louder with speed and can change pitch when turning.
What to do
- Note whether the sound changes when you turn the steering wheel slightly left and right at speed; a wheel bearing noise often shifts pitch, tire noise usually doesn't.
- Check tread for cupping or uneven wear by running a hand across it.
- Rotate the tires and see if the noise moves location or changes.
- If the noise stays the same after rotation, suspect the tire design itself or road surface.
- If the noise changes with steering input, have the wheel bearings inspected.
Tools and parts
Replacement wheel bearing if confirmedSearch: “wheel bearing for [your car model]”
When to call a pro
If the noise shifts pitch when turning or a rotation test doesn't change it, have a mechanic check the wheel bearings rather than replacing tires unnecessarily.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.