metallic scraping noise
hi guys,
I have a 2011 Z06 with ~18k miles. It started making some noises 2 weeks ago. I have a feeling it's something related to rotor/caliper/brake pads. I'm going to take off the rotor this weekend and measure it to see the highest/lowest point. Also look at the brake pads and calipers. What do you guys think? Thanks! * metallic scraping noise that corresponds to wheel revolution * pulsating brake pedal when slowing steady to a stop * scraping noise is more noticeable when making a wide left turn * noise and pulsating only comes after at least 30 min of driving; noise does not appear when first starting car after 5 day break; takes a while of driving for noise to appear * front passenger rotor has 2 deep groves, can see brake pad imprints on a section * brake pads are still good, pins don't look like touching the rotors * jacked up car and tugged wheel at 6&12 oclock positions, no play * didn't see any rocks or anything else hitting rotor |
Do you think perhaps you are chasing two different symptoms...pulsation vs metal scrapping? Once you actually take the calipers off, you might find the cause of your noise and/or pulsation.
For me, I had a scrapping sound emitting from the brakes when I would load the car to the right; especially under wide turns at speed (30mph+). It was a very tinny sounding scrap. It turned out to be the anti-rattle clip (not sure if that's what it is actually called) was rubbing on my rotor slightly. Bent it back/corrected it and all was good. Good Luck |
Sounds like you have at least one uneven/warped rotor and something scraping (probably that clip that Alberta mentioned), likely against the passenger rotor.
New OEM rotors are only about $80 each (if you have the standard Z06 brakes), though you're likely covered under warranty. I wouldn't worry about brake pad imprints. I've always get that after washing the car and letting it sit for a while afterwards. They wear off after some hard braking. |
:iagree: Sounds typical of one or more warped rotors.
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While the wheels are still on and off the ground, shake the wheel up & down and side to side. You may have a wheel bearing going out.
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I replaced all 4 rotors with oem rotors and brake pads with carbotech 1 piece. Went for a test drive and bedded the pads. No more noise!
Thanks for all the suggestions! |
Originally Posted by 880
(Post 1583460544)
I replaced all 4 rotors with oem rotors and brake pads with carbotech 1 piece. Went for a test drive and bedded the pads. No more noise!
Thanks for all the suggestions! |
If you still get the pulsating, might try new brake fluid. Maybe moisture got into it somehow.
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Originally Posted by 880
(Post 1583460544)
I replaced all 4 rotors with oem rotors and brake pads with carbotech 1 piece. Went for a test drive and bedded the pads. No more noise!
Thanks for all the suggestions! |
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