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Deep Thumping Sound While Driving

A deep, repetitive thumping that becomes more frequent as vehicle speed increases can come from a severely deteriorated wheel bearing, a flat-spotted or out-of-round tire, or a failing CV axle with a worn inner joint. The low-frequency thump is distinct from the higher-pitched hum of early bearing failure -- it indicates the damage is already substantial.

What Causes This Sound?

• Severely worn wheel bearing with fractured race or pitted ball bearings
• Tire with a flat spot from a locked-up wheel during hard braking
• Out-of-round tire from hitting a large pothole or curb at speed
• A failed inner CV joint with worn ball bearings thumping under load
• Broken belt within a tire causing a thumping vibration felt through the floor

Not Safe to Drive

A deep thumping wheel bearing is in an advanced state of failure. The hub assembly can seize or the bearing can disintegrate, causing sudden loss of steering control at any speed.

Deep wheel bearing thump is seen on high-mileage F-150 trucks with front hub assemblies, Chevrolet Silverado 4WD models, and Toyota Camry rear wheel bearing assemblies past 120,000 miles.

Estimated repair cost: $250–$600 per wheel for hub assembly; $200–$350 per tire if flat spot or belt failure is the cause

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Learn more about the technical diagnosis: Deep Thumping Sound While Driving — Diagnostic Guide

Frequently Asked Questions

How do I tell if it is a wheel bearing or a bad tire?

Swap the two front tires side to side. If the thump moves with the tire, it is a tire defect. If it stays on the same corner, it is a wheel bearing or hub assembly.

Can a flat-spotted tire cause as much risk as a bad wheel bearing?

A flat-spotted tire is annoying but not immediately dangerous unless the flat spot is severe enough to cause vibration that affects steering control. A failing bearing is more urgent.

Will the thumping get worse quickly?

Yes. In advanced bearing failure, heat from friction accelerates wear exponentially. A bearing that thumps at 40 mph today may seize within a few hundred miles of driving.

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