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Unread 12-07-2015, 10:25 PM   #1
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Default need help with brake noise

I really need help with eliminating high pitch brake noise from front brakes that only comes while braking at slow speed(almost about to stop) and only once the pads are warmed up.

I have changed 3 different sets of pad, once rotors and have not been able to eliminate this noise

All those 3 times i followed the vendors brake in procedures to make sure brakes are bedded in.

its really loud and embarrassing im not sure what else i could do to fix it. My mechanic and couple others have no clue what could be making the noise. Every time they just tell me to "replace the pads". i cant keep replacing pads every 2 weeks.

p.s Everytime i change pads, the noise subsides totally for couple weeks and than it comes back with full force

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Unread 12-08-2015, 01:10 AM   #2
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Model? Year? Squeal or groan or growl?

Generally noise is at the point of friction. Most often brake pad material. Cheap pads are often noisy.

Poor quality rotors can be noisy. Poor machining can cause noise.

Contamination at the friction point can cause noise.

Brake caliper guides that are sticking can cause noise. Calipers that are seizing can cause noise.

After eliminating all the above as a possible cause, some vehicles are just prone to noise. On a few cars I've installed Napa Adaptive One pads. Guaranteed to be quiet. I've never had to deal with noise ever with these pads.

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Unread 12-08-2015, 02:09 AM   #3
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Model? Year? Squeal or groan or growl?

Generally noise is at the point of friction. Most often brake pad material. Cheap pads are often noisy.

Poor quality rotors can be noisy. Poor machining can cause noise.

Contamination at the friction point can cause noise.

Brake caliper guides that are sticking can cause noise. Calipers that are seizing can cause noise.

After eliminating all the above as a possible cause, some vehicles are just prone to noise. On a few cars I've installed Napa Adaptive One pads. Guaranteed to be quiet. I've never had to deal with noise ever with these pads.

High pitch squel

Car is 2011 genesis coupe

Brake pads i have tried all top 3 premium brands including Hawks Ceramic pads.

I am 110% sure rotor isnt an issue here and previous (OEM) rotors had same issue.

Calipers are not sticking as i will have more issues other than just noise(noise will be there most of time even when driving which isnt the case here)

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Unread 12-08-2015, 09:26 AM   #4
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Is your genesis a sport package with the brembo brakes?

High performance pads are often noisy too. They arent really designed for street use, and to be run "cool". Cool is a relative term here, while they are hot to the touch, they are still considered to be cool compared to temps reached on a race track.

If you have the Hawk HP+ or HPS pads, they can and will squeel on the street, especially the HP+. They are great pads perfomance wise, but you sacrifice some drivability with them.

Specifically what pads did you buy, and what rotors.

EDIT: Is it the 2.0 turbo, or 3.8 v6?
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Last edited by pbasil1; 12-08-2015 at 09:31 AM.

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Unread 12-08-2015, 08:07 PM   #5
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Quote:
Originally Posted by pbasil1 View Post
Is your genesis a sport package with the brembo brakes?

High performance pads are often noisy too. They arent really designed for street use, and to be run "cool". Cool is a relative term here, while they are hot to the touch, they are still considered to be cool compared to temps reached on a race track.

If you have the Hawk HP+ or HPS pads, they can and will squeel on the street, especially the HP+. They are great pads perfomance wise, but you sacrifice some drivability with them.

Specifically what pads did you buy, and what rotors.

EDIT: Is it the 2.0 turbo, or 3.8 v6?
pbasil,
its not brembo brakes

I dont have either hawks. I have Hawks CERAMIC pads that are not supposed to be noisy. But i also have tried two other brands with same issue

Rotor i cant remember what brand i have but had noise issue even on the OEM ones. I know rotors isnt issue because when i change pads(as i have done 3 times) noise goes away for 2 weeks.

mine is 2.0t

really getting fedup of this noise.

To give u guys an idea, my car sounds like a truck or bus stopping.

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Unread 12-09-2015, 12:45 PM   #6
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Wow, im clueless as to what may be causing this. The only thing that comes to mind is glazing of the pad/s rotors from driving style.

You could try "bedding" the brakes. This is something more commonly done on big brake kits, such as the brembos. It will seat the pad better and remove a thin layer of glazing from the pads, and stop most or all squealing. I did this on my evo twice. You may try it, just be careful, but dont be shy...

How to Bed-in Brake Pads - The Best Technique for Bedding in Brake Pads
Only thing i would do different is increase speed up to 60-70 for the hard breaking, and when the say stop hard, its smash the brake pedal and panic stop. Just dont come to a complete stop, then repeat 2 more time, and be sure to drive a couple miles with out stopping so the brake can cool some before coming to a complete stop.
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