Causes For "squeeking" Of Brakes

[bugger]

What are the cause for the brakes to squeek?

when i depress the pedal harder?

the rotor?

or the pads?

or some other reason.

[mattymagoo22]

worn out pads, glazed(shiny surface) discs and pads, oil/grease left on rotors after working on car heats up and eventually makes for noisey brakes.

The type of pads used, asbestos while dangerous, was the best friction material ever no clutch shudder no squeaking brakes or warped rotors so sad to see it go.

Cheers matt.

oh yeah dust build up from pads wearing can affect discs but mostly drum brake setups

Edited May 20, 2007 by mattymagoo22

[bugger]

worn out pads, glazed(shiny surface) discs and pads, oil/grease left on rotors after working on car heats up and eventually makes for noisey brakes.

The type of pads used, asbestos while dangerous, was the best friction material ever no clutch shudder no squeaking brakes or warped rotors so sad to see it go.

Cheers matt.

oh yeah dust build up from pads wearing can affect discs but mostly drum brake setups

How about I spray water on it? (is it advisable to spray water on the brakes and rotors while washing car?)

or how about degreaser?

[Dave32]

Main cause of squealing brakes is the actual brake pad vibrating in the caliper. Pretty common for skyline brake caliper. Happens on my 32 GTR all the time, changed rotors and brake pads and brakes still squeal abit.

best thing I foudn was to get some disc brake quiet (red gooey stuff), take out the brake pads and apply it to the back of the pads, this keeps my brakes quiet for a couple thousand k's, i just reapply everytime i service the car and it keeps the brakes quiet, also its good to go back to a standard pad, the more aggressive ones, ultimates etc tend to squeal heaps more cos its basically metal rubbing metal.

but yeah, go to repco and get some disc brake quiet, costs like 8 bucks.

[siddr20]

Man i must try this red gooey stuff.

Coz i got new rotors and pads on the rear (Rda rotors +endless pads) and they squeak like a mother F... lol

I got new stock nissan pads on the front, and they dont squeal at all..

Its so embrassing stoping at a light or slowing down.. Everyone just looks at you!!

Trust me its not just a little squeal..

But i guess you are right Dave32.. more agressive pads do squeal a shit loads.. should have just put standard pads in the rear, but i got these endless pads for free!!

Edited May 21, 2007 by siddr20

[siddr20]

Btw any one got pics, of how to put this red gooey stuff on the back of the pads?

Also why the back of the pads?

Cheers

Edited May 21, 2007 by siddr20

[Dave32]

it really isnt hard, take the pads out, squeeze the gooey stuff on the back like toothpaste, then what i do is get the two brake pads and rub the backings of them together, to spread it nice and even on the back of the pads, let it dry a little and chuck the brake pads back in.

when it drys it turns into sorta like a silicon rubbery compound, what this does is absorb the vibrations from the pad in the caliper, dont apply it to ur rotors or the front of the pads as this just gets cleaned off the first time you brake.

i know what you mean by really loud squealing, used to happen to me aswell, just go back to a standard pad, you don't need anything more than that for street driving, if you track your car just keep a dedicated of spares for the track, you don't want aggressive pads for day to day driving, just chews through rotors quicker.

[Swink33]

it really isnt hard, take the pads out, squeeze the gooey stuff on the back like toothpaste, then what i do is get the two brake pads and rub the backings of them together, to spread it nice and even on the back of the pads, let it dry a little and chuck the brake pads back in.

when it drys it turns into sorta like a silicon rubbery compound, what this does is absorb the vibrations from the pad in the caliper, dont apply it to ur rotors or the front of the pads as this just gets cleaned off the first time you brake.

i know what you mean by really loud squealing, used to happen to me aswell, just go back to a standard pad, you don't need anything more than that for street driving, if you track your car just keep a dedicated of spares for the track, you don't want aggressive pads for day to day driving, just chews through rotors quicker.

I put the Brake Disc Quiet on my noisy pads and it still hasn't helped. I have RB74's all round and unless I drive the car hard the pads and rotors seem to glaze over but even when the pads are hot they still make some noise. I have decided to go back to standard OEM pads because I also know how embarrassing it is to stop at the lights while screeching and having everybody stare at you. It really detracts from the pleasure of driving the car.

Would changing to slotted rotors solve my problem? I'm inclined to just change the pads but I would prefer to keep the pads if I can make them quiet.

[oblivo]

I've had this problem for some time. First, with Endless SSYs and DBA 4000s the squealing was unbearable. We tried everything - chamfering, machining, goo, shims, Bendix Ultimates...

Anyhow, I had Bendix Heavy Duty put in recently and although better, they still squealed.

Eventually, someone worked out that the seals were worn in the calipers, and when the piston moved towards the rotor, the seal tried to roll with it and thus the piston wouldn't detract properly, leaving the pad contacting the rotor lightly = heat = glaze = squeak etc etc

Long story short, I had all my calipers rebuilt. Seal kits were about $100 each caliper and the same for labour. After this, it was dead silent. That was about a week ago and although I do get some minor, minor squeaks, its 1000 times improved. I'm just hoping it doesn't come back.

Just my 2c...

Edited May 21, 2007 by oblivo

[siddr20]

Yup after track day, im gonna go back to standard pads..

[Swink33]

I've had this problem for some time. First, with Endless SSYs and DBA 4000s the squealing was unbearable. We tried everything - chamfering, machining, goo, shims, Bendix Ultimates...

Anyhow, I had Bendix Heavy Duty put in recently and although better, they still squealed.

Eventually, someone worked out that the seals were worn in the calipers, and when the piston moved towards the rotor, the seal tried to roll with it and thus the piston wouldn't detract properly, leaving the pad contacting the rotor lightly = heat = glaze = squeak etc etc

Long story short, I had all my calipers rebuilt. Seal kits were about $100 each caliper and the same for labour. After this, it was dead silent. That was about a week ago and although I do get some minor, minor squeaks, its 1000 times improved. I'm just hoping it doesn't come back.

Just my 2c...

Thanks for the info. I will have the calipers checked out. Hopefully a rebuild is not necessary

[bugger]

When i got the car, there isn't any sound.

now when i depress harder, there's the squeeking sound.

what can be the cause?

the braking power is still there also.

[MBS206]

You could be running out of brake pads and it's the metal tab warning you.

Pull the wheel off and have a look at them. Also have a look to see how much gap between the warning tab and the rotor there is.

Most likely, you could be wanting new brakes.