Lexus IS Forum - View Single Post - Low pitched hum/vibration when braking, help?
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post #6 of (permalink) Old 03-01-2017, 06:53 PM
01 SolarYellow
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If you replaced the brake hardware and lubed it good. The hum is the cross and sltted rotors. Now on top of that. If tey are cheaply made rotors. They may not be perfectly round or have a good flat braking surface.
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