[creativ101]

Replaced pad and rotors and was squeak free for about 6 months. Now it's back. !!!!!!!!!!

[Bideul]

The squeak was still present, so I tried something else: I removed the pad sensor.

and the squeak is still there. I'll go crazy !

As a turn at low speed seems to have an effect on the squeak (a left turn causes squeak and a right turn stops the squeak), I think it's related to the rotor (which deforms a little) and the pad, maybe the edges of the pad ... my next try :/

[Bideul]

Chamfer on the pad had no effect.

I'm thinking we have to live with this squeak ... not cool :/

[techwhiz]

The squeak is caused by the edge of the pad rubbing against the small lip on the rotor after the pads wear the rotor.

The only solution is to live with it. No matter what you do it will come back.
New pads and rotor make it go away for a while. It will come back.

Well there is one other solution... Big brake kit front and rear.

[Bideul]

Originally Posted by techwhiz

The squeak is caused by the edge of the pad rubbing against the small lip on the rotor after the pads wear the rotor.

The only solution is to live with it. No matter what you do it will come back.
New pads and rotor make it go away for a while. It will come back.

Well there is one other solution... Big brake kit front and rear.

Maybe I can try to chamfer this edge ... even if it's not definitively.

[oilcrankinject]

My squeak start when I come to a complete stop. I only notice this in the early morning (when my windows are down but not in the afternoon and evening when my windows are up).

I will look at my dust pads later this week to see if I see signs of grinding.

[techwhiz]

It's not dust shields.
It's the edge of the rotor after it wears rubbing the edge of the pad.

No matter what you do it WILL come back!!!

[ssshake]

Originally Posted by onebadmofo

You can actually hear the noise here in one of my videos.
http://www.youtube.com/watch?feature...0fypvUQo#t=85s

Please take a look at my video and tell me if my squeak is the same as yours https://www.youtube.com/watch?v=ua294Rpt2Yk

I took this issue to BMW and $1500 later I had new brakes and the same squeak. They're kind of being useless about the situation. I've been back three times and all they do is take everything apart and clean stuff.

[ssshake]

sorry for bumping my own reply but I really need some input. I've had my car at the dealership 5 times now and they clearly don't have a clue.

[RoundelMatt]

Originally Posted by ssshake

Please take a look at my video and tell me if my squeak is the same as yours https://www.youtube.com/watch?v=ua294Rpt2Yk

I took this issue to BMW and $1500 later I had new brakes and the same squeak. They're kind of being useless about the situation. I've been back three times and all they do is take everything apart and clean stuff.

Your squeak doesn't appear to be the same as the one addressed in this thread. In your video, the squeak occurs when breaking, correct? In the video you quoted, the squeak occurs during acceleration.

[DrewWphoto]

Subscribed for later

[supercompact]

Mine only squeaked going around slow left turns. It sounded like the passenger side rear brakes. I just did a brake job on the rear about three weeks ago and the sound has disappeared. I did massage the dust shields a bit, but they didn't appear to be making contact. Maybe it was just the pads or possibly the sensor that was making the noise on mine. There is only a sensor on the passenger side rear, so that could definitely be it. It also makes contact with the rotor after your pads are worn. I'd almost put money on it being that sensor.

[Bideul]

Originally Posted by supercompact

Mine only squeaked going around slow left turns. It sounded like the passenger side rear brakes. I just did a brake job on the rear about three weeks ago and the sound has disappeared. I did massage the dust shields a bit, but they didn't appear to be making contact. Maybe it was just the pads or possibly the sensor that was making the noise on mine. There is only a sensor on the passenger side rear, so that could definitely be it. It also makes contact with the rotor after your pads are worn. I'd almost put money on it being that sensor.

Last year, I've made the same hypothesis. So I disconnect the sensor and zip it in order to not let it free. And without the sensor, the noise was still here. I deduced that the noise is made by contacts between pads and rotor. The question is : why only on the right side ?

[Fedorov]

Just to follow up, ever since I changed the brake pads as maintenance the squeaking has been totally absent..

Guess I'm lucky, or the issue could have more than one cause..

[DYOOS]

Sub'd. Got my brakes checked yesterday and was told they're good for a long while. But my brakes are squeaking. Has anyone put this to rest?

[juld0zer]

Make sure all 8 pads are good for starters. It is not rare to see the inner pad more worn than the outer.

If the sensor has touched the disc it can create a light screeching sound also

[DYOOS]

My brakes are good and don't need to be replaced fo ra while. If the sensor is touching the disc, how do we resolve that issue?

Originally Posted by juld0zer

Make sure all 8 pads are good for starters. It is not rare to see the inner pad more worn than the outer.

If the sensor has touched the disc it can create a light screeching sound also

[juld0zer]

You will need to replace the pads if the sensor is touching the disc. Also make sure the discs are still serviceable (at or above minimum thickness)

[PhaseP]

Originally Posted by juld0zer

You will need to replace the pads if the sensor is touching the disc. Also make sure the discs are still serviceable (at or above minimum thickness)

No you don't replace the pads when sensor touches the disc, you replace when sensor is worn down and tripped which causes brake light to come on. Sensor always touches the disc with the pad as brakes are applied, that is how is wears down and trips.
In my experience getting the car washed with wheel cleaning option at those auto car wash places prevents the squeaking.

[DYOOS]

Hmm, washing the brakes/wheels seems like it'd only be a temporary fix. How long have you not had the squeaking after you washed them?

Originally Posted by PhaseP

No you don't replace the pads when sensor touches the disc, you replace when sensor is worn down and tripped which causes brake light to come on. Sensor always touches the disc with the pad as brakes are applied, that is how is wears down and trips.
In my experience getting the car washed with wheel cleaning option at those auto car wash places prevents the squeaking.

[PhaseP]

I don't have squeak for years now. The only thing I can see as difference is I have been opting to include the wheel package for a long while now at each auto wash for the last few years. It may or not be it but I don't have squeaking brakes, I used to have occasionally like others here at low speed moving.

[juld0zer]

That is not true. The sensor never touches the disc until about roughly 50% of the inner pad has worn. At this point, the raised hump on the sensor touches the disc. This is the first trip and tells the DSC module to start the actual countdown (after the plastic has worn down a bit more). The countdown that occurs before this first trip stage is purely estimation.

The second stage is when the hump has almost completely worn away. This will bring on the red service light and message to the effect of "Brake pads, Replace!".

Replacing the sensor only is futile - if you can even push the sensor into the gap between the worn pad and the disc. I should have been more clear in my previous post. Replace pads if the sensor has worn flat, or if 3mm or less friction material remains on any of the four pads of an axle.

Washing the wheels and hosing the discs might temporarily reduce the noise because water promotes rusting and also turns the brake pad dust into a paste of sorts, which can provide some cushioning against vibrating components which causes the squeal.