XBimmers.com | BMW X6 Forum X5 Forum
 
TireRack





Go Back   XBimmers.com | BMW X6 Forum X5 Forum > BMW X5 Forums > General BMW X5 (E70) and X5M Forum (2006-2013)

Post Reply
 
Thread Tools Search this Thread
      02-09-2016, 09:45 AM   #1
windtendo
Lieutenant Colonel
windtendo's Avatar
1713
Rep
1,908
Posts

Drives: 2023 M5C
Join Date: Apr 2013
Location: Houston

iTrader: (1)

Garage List
2023 BMW M5C  [0.00]
1989 BMW M3  [0.00]
Squealing Brakes

For the past 3-4 months, my brakes have been insanely squealy when braking. There's a very slight spot on the brake pedal that keeps them from squealing, but any more or any less pressure and it's squeal-city. The noise happens at ANY speed fast or slow. Dealership looked at the rotors and said there's nothing they can do since they're well within spec. Car has about 32K miles and I'm pretty easy on the car 95% of the time.

Anyone have some ideas what could fix this problem?
Appreciate 0
      02-09-2016, 10:37 AM   #2
dpie
First Lieutenant
dpie's Avatar
United_States
76
Rep
378
Posts

Drives: X5M
Join Date: Feb 2015
Location: United States

iTrader: (3)

Quote:
Originally Posted by windtendo View Post
For the past 3-4 months, my brakes have been insanely squealy when braking. There's a very slight spot on the brake pedal that keeps them from squealing, but any more or any less pressure and it's squeal-city. The noise happens at ANY speed fast or slow. Dealership looked at the rotors and said there's nothing they can do since they're well within spec. Car has about 32K miles and I'm pretty easy on the car 95% of the time.

Anyone have some ideas what could fix this problem?
Same issue with mine. It has gone away for the time being. Dealer said there is nothing they can do since the brakes were just replaced last year during CPO process. Open to hearing suggestions as well....
Appreciate 0
      02-09-2016, 11:34 AM   #3
Qarban
Private First Class
United_States
26
Rep
116
Posts

Drives: E70 X5 and E70 X5M
Join Date: Dec 2015
Location: Texas

iTrader: (0)

Same issue and I got same explanation from the dealer, but they still disassembled, cleaned and lubricated them but the problem has not been resolved.
Appreciate 0
      02-09-2016, 01:03 PM   #4
Poppyboy
Captain
United_States
192
Rep
827
Posts

Drives: 2011 X5 3.5i w/ SA Package
Join Date: Jul 2014
Location: Lincolnshire, IL

iTrader: (0)

Garage List
1976 Triumph TR6  [10.00]
1993 Bentley Turbo R  [10.00]
2011 X5  [10.00]
Mine makes squealing noises during the 1st quarter of brake travel when it gets VERY cold outside.
Appreciate 0
      02-09-2016, 01:35 PM   #5
windtendo
Lieutenant Colonel
windtendo's Avatar
1713
Rep
1,908
Posts

Drives: 2023 M5C
Join Date: Apr 2013
Location: Houston

iTrader: (1)

Garage List
2023 BMW M5C  [0.00]
1989 BMW M3  [0.00]
Sounds like it's not an uncommon issue here... I cringe every time I'm in a parking garage.
Appreciate 0
      02-09-2016, 01:39 PM   #6
mitch808
Captain
107
Rep
994
Posts

Drives: 2012 X5 35i
Join Date: Mar 2014
Location: Seattle

iTrader: (0)

Easy fix, hard to do.... I know a contradiction of terms...

Find a stretch of road to perform the following:
Brake from with moderate to hard pressure - 60-10MPH
Do it 10 times. Not 6, Not 8. But 10 times.
Do NOT allow your brakes to cool inbetween stops. At most 30sec...

Then on your cool down run, after its all done.. Drive at a normal pace. Your brakes will be smoking, literally. Try to just cruise at a constant speed for at least 5 min to cool down, avoid complete stops.
Appreciate 0
      02-10-2016, 09:42 AM   #7
windtendo
Lieutenant Colonel
windtendo's Avatar
1713
Rep
1,908
Posts

Drives: 2023 M5C
Join Date: Apr 2013
Location: Houston

iTrader: (1)

Garage List
2023 BMW M5C  [0.00]
1989 BMW M3  [0.00]
Quote:
Originally Posted by mitch808 View Post
Easy fix, hard to do.... I know a contradiction of terms...

Find a stretch of road to perform the following:
Brake from with moderate to hard pressure - 60-10MPH
Do it 10 times. Not 6, Not 8. But 10 times.
Do NOT allow your brakes to cool inbetween stops. At most 30sec...

Then on your cool down run, after its all done.. Drive at a normal pace. Your brakes will be smoking, literally. Try to just cruise at a constant speed for at least 5 min to cool down, avoid complete stops.
Honestly curious and not being sarcastic, but what exactly does this do? I read something similar to this for seating brake pads I think awhile back.
Appreciate 0
      02-10-2016, 12:52 PM   #8
Myaddiction
Second Lieutenant
87
Rep
286
Posts

Drives: X6M
Join Date: Nov 2011
Location: San Diego CA

iTrader: (0)

Garage List
2015 BMW M4  [0.00]
It "beds" the brakes. In reality your brakes work best when the pad is pressed against a layer of pad material that gets deposited on the rotor. It takes heat to make that happen. how much heat depends on the make up of the pads.

They put pretty aggressive pads on these because of the power and the weight. If you drive lightly with these pads they don't deposit the material on the rotor and you get pad to metal contact. Which squeals because these have semi metallic pads i.e. little slivers of metal in the pad to help transfer heat.

Bedding in the pads transfers pad material but as you drive around afterwards they will scrub the rotors back down so you'll have to do it occasially or drive like a crack head.

If you'd like to know more Stoptech has a good article:http://stoptech.com/technical-suppor...ake-pad-bed-in
Appreciate 0
      02-16-2016, 03:40 PM   #9
MAK3N3
Private
MAK3N3's Avatar
United_States
9
Rep
75
Posts

Drives: E36, E70, E90
Join Date: Dec 2009
Location: Houston

iTrader: (2)

ALSO - DO NOT COME TO A COMPLETE STOP - Keep it rolling from that 10 MPH...keep repeating the process like he said 10x. Cool down period is must as well...otherwise if you come to a complete stop while bedding in your brakes when they're hot you WILL surely transfer pad material to the rotor in one spot in which you'll get a warped rotor feeling when braking.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 10:15 PM.




xbimmers
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST