12-13-2016, 07:33 PM | #1 |
Drives: 2010 Camaro 2SS/RS, 1993 Camaro Z28 Join Date: Dec 2012
Location: Tucson, AZ
Posts: 22
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Grinding From Rear Brakes after Pad/Rotor Change
I recently swapped out the stock brake pads and rotors with drilled/slotted rotors from Power Stop, along with new ceramic/carbon pads.
I noticed some noise for the first few miles, but nothing major - assumed it was just the brake pads and rotors "breaking in". However, the noises were much worse the second time I took the car out. The sound is now a loud grinding sound that appears to be coming from the rear passenger brake. It sounds very similar to a car that needs new brakes. Also, the sound is present when taking off from a stop, but appears to go away once you reach 15-20mph (this is most noticeable after coming to a complete stop).
I'm taking everything off again tomorrow to check, but was curious to if there was anything I should look for. This is my first time changing the brakes on this car, so I definitely may have made a rookie mistake. |
12-14-2016, 04:27 AM | #2 |
Drives: 2015 Z/22 Join Date: Aug 2015
Location: Ontario, Canada
Posts: 930
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Kind of sounds like the caliper pistons aren't retracting so the pad(s) stay sitting against the rotor instead of moving back off of the rotor - could the calipers have been damaged during install? Each piston has a small rubber o-ring-like thing which retracts the pistons after use, so maybe one of these got cut?. Maybe look to see if one of the pads is worn a bit more than the others; also make sure the rotors and pads are all sitting square to the hub/each other; and if everything appears fine, you could try a pad-bedding procedure.
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12-15-2016, 07:31 AM | #3 | |
Drives: 2010 2lt Join Date: Nov 2016
Location: utah
Posts: 6
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Quote:
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12-15-2016, 01:11 PM | #4 |
Drives: 62 Chevy & 2021 1SS/1LE manual Join Date: Aug 2010
Location: Kentucky
Posts: 893
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it sounds silly but ive seen pads put in backwards before. it will do exactly what your describing.
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12-15-2016, 01:27 PM | #5 |
Drives: 2015 Z/22 Join Date: Aug 2015
Location: Ontario, Canada
Posts: 930
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12-15-2016, 01:53 PM | #6 |
El Duderino
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The pads always stay in light contact with the rotor...
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I bowl. Drive around. The occasional acid flashback.
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12-15-2016, 02:00 PM | #7 |
Drives: 2015 Z/22 Join Date: Aug 2015
Location: Ontario, Canada
Posts: 930
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The pads will maintain light contact but the pistons retract ever so slightly so as to relieve any (most of the) pressure from the pads against the rotor; if the pistons stayed in the after-use position there would still be some braking force present (for a short amount of time) and the pads would wear much quicker.
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