Brake pulsation returned after rotor replacement because the installed disc inherited lateral runout from corrosion on the hub face.
Why this matters
The value of this case is the order of evidence and the verification step. The same symptom on another vehicle may have a different cause.
Evidence to capture first
- Rotor runout before removal
- Hub-face runout
- Disc thickness
- Wheel-fastener condition and torque sequence
A disciplined path
- Measure before disassembly
- Clean and inspect the hub
- Index the rotor and remeasure
- Correct the mounting issue and verify at operating temperature
Decision point
The case closed only after installed runout met specification and the original road-test condition no longer produced pulsation.
Source desk
Use current model-specific service information for specifications, connector locations, disabling procedures, and tightening values. The following public resources support the broader safety or system context used in this guide.
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