I have 25K miles on porterfield's, then another 5K after replacing the rear. Zero brake noise.
I got on them, hard, when first installed...numerous times. Not a squeak after that.
GL
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Retired 2016 BMW 550i xDrive MSport | 2013 BMW 550i xDrive MSport | 2012 BMW 535i xDrive | 1988 BMW 325ic | 1984 BMW 318i
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