Brakes squeaking

Kripster · 01-04-2021, 06:24 AM

Hearing some squeaking as I brake the car. Have about 10k miles in 10 months on it. I don't break hard when I drive. I'd be surprised if brakes are worn so soon. Just did my 1 year oil change service. Noise only appeared after the service which may be a coincidence. Thoughts on what the squeaking means?

orthopod · 01-04-2021, 07:40 AM

Well, I had a similar problem, with my brakes squeaking at about 9000 kms, and when the car went in for it to be looked at, I was told that they had to clean the brakes as there was too much brake dust on it.

It seems to have resolved the problem.

nZtiZia · 01-04-2021, 10:16 AM

truth be told, I was a long standing Audi customer (11 years) and switched to BMW to avoid the squeaky brakes (3 Q7s and they all squeaked). say it ain't so!!!

mobilejo · 01-04-2021, 10:34 AM

Quote:

Originally Posted by Kripster

Hearing some squeaking as I brake the car. Have about 10k miles in 10 months on it. I don't break hard when I drive. I'd be surprised if brakes are worn so soon. Just did my 1 year oil change service. Noise only appeared after the service which may be a coincidence. Thoughts on what the squeaking means?

Gentle breaking for long periods without any 'hard' braking can make the pads glaze, which then leads to squealing. I have had this on a few cars if I am just driving in high traffic areas for weeks with no spirited driving in between.

A good run with some hard braking can help, not like 'breaking in' type breaking, just a fairly aggressive drive usually resolves it.

Fennario · 01-04-2021, 02:18 PM

Couple of factors at play with respect to squeaking brakes in general:

1. Brake Pad/Rotor selection. Certain compounds or pad/rotor combinations. Carbon Fiber brakes are notorious for squeaking until properly warmed up.

2. Rust/Dust build up. Rusty or dirty rotors can squeak until the surface is cleaned off by a couple of stops from highway speeds.

3. Improper bedding of pads and rotors. Certain pad/rotor combinations require break-in and bedding of the compounds to each other. No hard braking for the first couple of hundred miles followed by a quick series of hard but smooth/even deceleration from 70mph ->5mph (5-6 times to get the brakes red hot). This ensures proper pad to rotor contact. In general this typically applies to sport brakes which have a more aggressive pad and larger rotors to burnish.

4. Grit/pebble stuck between pad and rotor. Not good and will damage the rotor.

-Vanguard- · 01-04-2021, 02:20 PM

Do you have the M sport brakes? Those are made by brembo and have been notorious for squealing.

Its normal for them.

Its because of the massive amounts of brake dust they make.

Replace the pads to powerstop or R1 concepts and it should be fine.

Kripster · 01-04-2021, 07:22 PM

Quote:

Originally Posted by -Vanguard-

Do you have the M sport brakes? Those are made by brembo and have been notorious for squealing.

Its normal for them.

Its because of the massive amounts of brake dust they make.

Replace the pads to powerstop or R1 concepts and it should be fine.

Yes I have M Sport brakes. Not sure what this means: "Replace the pads to powerstop or R1 concepts"

-Vanguard- · 01-04-2021, 08:12 PM

Quote:

Originally Posted by Kripster

Yes I have M Sport brakes. Not sure what this means: "Replace the pads to powerstop or R1 concepts"

replace your brembo pads with aftermarket pads that are quieter and produce less dust

They will stop about 95% as well as the brembos but your wheels wont be caked in dust nor will they squeal.

Kripster · 01-21-2021, 03:25 PM

Quote:

Originally Posted by orthopod

Well, I had a similar problem, with my brakes squeaking at about 9000 kms, and when the car went in for it to be looked at, I was told that they had to clean the brakes as there was too much brake dust on it.

It seems to have resolved the problem.

The dealer told me the same: brake dust cleaned.

jad03060 · 01-21-2021, 03:33 PM

OFten, if you are in an area without traffic, at least one and maybe a couple hard stops will clean things off enough to quiet the brakes. This is more important with a PHEV or EV as with regen, you may not actually be using the brakes as much or as hard. Rust is a possibility, and if it's not pitted too deep, the same thing will fix it, otherwise, it may require new rotors.

Kripster · 01-30-2021, 04:24 PM

Quote:

Originally Posted by Kripster

Quote:

Originally Posted by orthopod

Well, I had a similar problem, with my brakes squeaking at about 9000 kms, and when the car went in for it to be looked at, I was told that they had to clean the brakes as there was too much brake dust on it.

It seems to have resolved the problem.

The dealer told me the same: brake dust cleaned.

Despite dealer saying they cleaned them they continue to squeak. Noise seems a little louder even. Notes on work receipt show they chamfered something and even tested after the work to confirm noise disappeared. Should I do some hard braking? Just live with it? Or schedule another visit with dealer?

Lance Alot · 01-30-2021, 05:05 PM

Quote:

Originally Posted by Kripster

Despite dealer saying they cleaned them they continue to squeak. Noise seems a little louder even. Notes on work receipt show they chamfered something and even tested after the work to confirm noise disappeared. Should I do some hard braking? Just live with it? Or schedule another visit with dealer?

Brakes on my X5M squeak like a wounded pig. I think is the nature of brembo brakes as someone else said, and the only real fix is to replace them. I decided to just live with the squeaking since it was a leased vehicle.

01-04-2021, 06:24 AM	#1
Kripster Techie 16 Rep 105 Posts Drives: 540i M Sport Join Date: Feb 2012 Location: US iTrader: (0)	Brakes squeaking Hearing some squeaking as I brake the car. Have about 10k miles in 10 months on it. I don't break hard when I drive. I'd be surprised if brakes are worn so soon. Just did my 1 year oil change service. Noise only appeared after the service which may be a coincidence. Thoughts on what the squeaking means?
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01-04-2021, 07:40 AM	#2
orthopod Private 52 Rep 85 Posts Drives: X5 40i MSport LCi Join Date: May 2019 Location: Bombay, India iTrader: (0)	Well, I had a similar problem, with my brakes squeaking at about 9000 kms, and when the car went in for it to be looked at, I was told that they had to clean the brakes as there was too much brake dust on it. It seems to have resolved the problem.
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01-04-2021, 10:16 AM	#3
nZtiZia Major General 4648 Rep 8,689 Posts Drives: eVeRyOnE mAD! Join Date: Dec 2020 Location: neither here nor there... iTrader: (0) Garage List 2021 BMW X5 xDrive 45e [9.88]	truth be told, I was a long standing Audi customer (11 years) and switched to BMW to avoid the squeaky brakes (3 Q7s and they all squeaked). say it ain't so!!!
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01-04-2021, 02:18 PM	#5
Fennario Private First Class 153 Rep 185 Posts Drives: X5 45e Join Date: Oct 2020 Location: Bay Area iTrader: (0)	Couple of factors at play with respect to squeaking brakes in general: 1. Brake Pad/Rotor selection. Certain compounds or pad/rotor combinations. Carbon Fiber brakes are notorious for squeaking until properly warmed up. 2. Rust/Dust build up. Rusty or dirty rotors can squeak until the surface is cleaned off by a couple of stops from highway speeds. 3. Improper bedding of pads and rotors. Certain pad/rotor combinations require break-in and bedding of the compounds to each other. No hard braking for the first couple of hundred miles followed by a quick series of hard but smooth/even deceleration from 70mph ->5mph (5-6 times to get the brakes red hot). This ensures proper pad to rotor contact. In general this typically applies to sport brakes which have a more aggressive pad and larger rotors to burnish. 4. Grit/pebble stuck between pad and rotor. Not good and will damage the rotor.
	Appreciate 1 Kripster15.50 Quote

01-04-2021, 02:20 PM	#6
-Vanguard- Lieutenant Colonel 1176 Rep 1,502 Posts Drives: 2021 X6M Competition Join Date: Dec 2020 Location: NY iTrader: (0)	Do you have the M sport brakes? Those are made by brembo and have been notorious for squealing. Its normal for them. Its because of the massive amounts of brake dust they make. Replace the pads to powerstop or R1 concepts and it should be fine.
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01-21-2021, 03:33 PM	#10
jad03060 Major General 3159 Rep 6,799 Posts Drives: X5 45e Join Date: Aug 2018 Location: NH iTrader: (0)	OFten, if you are in an area without traffic, at least one and maybe a couple hard stops will clean things off enough to quiet the brakes. This is more important with a PHEV or EV as with regen, you may not actually be using the brakes as much or as hard. Rust is a possibility, and if it's not pitted too deep, the same thing will fix it, otherwise, it may require new rotors.
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