Brakes Squeaking w/ No Pedal Pressure
#1
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First post, so apologies for any dead giveaways.
I recently bought a 997.1 C4 with 64k miles. During the PPI, I was told the rotors have been turned, but they and the pads have a decent amount of life left.
Once I hit the ~1,800 mile mark of my ownership, the front left brake sound like it squeaks at low speeds and not under braking. I know it is the brakes because they only make noise when I am not actively braking. Once there is some pressure on the pads, the noise goes away. It also goes away for the most part after 25-30 mph. Anything under that, and its loud and pervasive. And embarrassing.
What gives? I didnt think I needed new pads/rotors so soon. But I will replace one or both of those if this will remedy the issue. Let me know if any of you all have run into this issue before, and how you solved it.
I recently bought a 997.1 C4 with 64k miles. During the PPI, I was told the rotors have been turned, but they and the pads have a decent amount of life left.
Once I hit the ~1,800 mile mark of my ownership, the front left brake sound like it squeaks at low speeds and not under braking. I know it is the brakes because they only make noise when I am not actively braking. Once there is some pressure on the pads, the noise goes away. It also goes away for the most part after 25-30 mph. Anything under that, and its loud and pervasive. And embarrassing.
What gives? I didnt think I needed new pads/rotors so soon. But I will replace one or both of those if this will remedy the issue. Let me know if any of you all have run into this issue before, and how you solved it.
#2
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Brake harder. They will quiet down.
#4
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Generally our cross drilled OE brake rotors are rarely turned.
A good starting point would be a measurement on your rotor and pad thickness.
A good starting point would be a measurement on your rotor and pad thickness.
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jaredq22 (06-21-2022)
#5
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Also Non-OEM Brake sensors can cause squealing
#6
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Sometimes sand or small rocks can get lodged between the brake pad and rotor.
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Hella-Buggin' (06-21-2022),
Rig.Stunts (06-22-2022)
#7
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Sounds like your front caliper pistons might be sticking. Are the pads in that noisy caliper more worn than the others?
Turning rotors isn't a great idea. The minimum allowed thickness is only 2mm less than the new thickness. For a rotor to have enough wear to need turning and then to turn it far enough to get rid of the surface grooves, you're likely now well below the minimum thickness. Reducing the mass of metal in the rotor reduces the heat sink and will make them warp much easier. I'd start with a proper brake job using new rotors and pads and while things are apet you can see if the noisy corner has a stuck caliper.
Turning rotors isn't a great idea. The minimum allowed thickness is only 2mm less than the new thickness. For a rotor to have enough wear to need turning and then to turn it far enough to get rid of the surface grooves, you're likely now well below the minimum thickness. Reducing the mass of metal in the rotor reduces the heat sink and will make them warp much easier. I'd start with a proper brake job using new rotors and pads and while things are apet you can see if the noisy corner has a stuck caliper.
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#8
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[...]
Once I hit the ~1,800 mile mark of my ownership, the front left brake sound like it squeaks at low speeds and not under braking. I know it is the brakes because they only make noise when I am not actively braking. Once there is some pressure on the pads, the noise goes away. It also goes away for the most part after 25-30 mph. Anything under that, and its loud and pervasive. And embarrassing.
[...].
Once I hit the ~1,800 mile mark of my ownership, the front left brake sound like it squeaks at low speeds and not under braking. I know it is the brakes because they only make noise when I am not actively braking. Once there is some pressure on the pads, the noise goes away. It also goes away for the most part after 25-30 mph. Anything under that, and its loud and pervasive. And embarrassing.
[...].
So best thing is to a) measure thickness of rotor if still in tolerance and b) check for pads and their damping plates.
Edit: Forget about the pad-sensors, wrap them up. Check your brakes on a regular base instead.
Last edited by 8x57IRS; 06-22-2022 at 09:24 AM. Reason: Adding not to sensor.
#9
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Just a note since not everyone has a micrometer in their tool box ... our rotors have wear dimples on the outer edge beyond the through holes. If you can see the dimple you still have more life in the rotors. A mirror is needed to see the back side.
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8x57IRS (06-22-2022)