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post #12 of (permalink) Old 15th June 2006
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What makes brakes squeal is the brake pads vibrating in the calipers and rubbing on the caliper pistons, that is metal to metal contact, if you rub 2 pieces of metal together they will make a noise, because the vibrations are at a very high frequency the noise comes out as a squeal!

As above, a bit of grease ie. copaslip will lubricate the 2 metal surfaces and stop the squeal.

I think?
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