Ford Focus Forum, Ford Focus ST Forum - View Single Post - Squealing brakes while stopping
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Old 01-07-2013, 01:03 AM   #18
amc49
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Join Date: Mar 2012
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Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

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If you grind off the right angle 90 degree corner to a 30-45 degree bevel where the pad material ends the noise will disappear for good. Dust makes it worse but not the cause, relubing the shoe rub points makes it better but not the cause. The right angle corner digs in to let the shoe snag and go forward until it snaps back to repeat at very high speed, the reverberation turns into squeal. I've fixed several now doing this and permanently. Will even fix the loudest squealing you ever heard. Takes two-three minutes on a bench grinder to do it. The Ford backing plates are too thin and ring that vibration like a bell.
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