Quote:
Originally Posted by CSG Mike
It depends on the pad and the caliper.
Some pads will never quiet down, regardless of caliper, and some calipers don't have any harmonic damping, making the pad much more likely to make noise.
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With PFC 01, 08, and 90 in the AP Racing front calipers my car is louder than a dump truck on the last few dozen feet of a slow stop with moderate or less pedal pressure as soon as there is any temp in the pads/rotors.
That issue isn't present with the same pads on the Baer/Alcon 4-pots on my other car.
The major difference is spring clip position. On AP the pads sit in the clip 'cradle' fore/aft. On Alcon, the pads sit free but there is a giant H-spring under the cross bolt that presses down on them.
Curious if changing to the other spring style would dampen the noise.