What should a mechanic test for wheel bearing noise?
A useful test plan for wheel bearing noise verifies the operating state first, preserves scan evidence, and measures the competing steering & suspension paths before any component is replaced.
Plausible causes
- Steering, suspension, or wheel-support concern
- Tire or alignment influence
- Joint, mount, damper, spring, or bearing
Useful next checks
- Full module scan and steering-angle status
- Tire pressure, construction, conicity, wear, and runout
- Calibrated four-wheel alignment
- Loaded linkage/joint, bearing, ride-height, and NVH inspection
Sources and method
This answer provides hypotheses and a verification plan, not a component verdict. Exact repair procedures require authoritative service information for the specific vehicle.
Pull/Drift Diagnostic Guidance · NHTSA / Subaru