BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW M5 F90 (2018+) General Forums Wheels | Tires | Suspension | Brakes | Chassis    ACG brake pads vs. stock

Post Reply
 
Thread Tools Search this Thread
      09-22-2019, 08:54 AM   #1
ambletx
First Lieutenant
ambletx's Avatar
515
Rep
382
Posts

Drives: 2021 M5 Comp
Join Date: Oct 2017
Location: Austin, TX

iTrader: (0)

ACG brake pads vs. stock

So I finally got my Porterfield Carbon/Kevlar pads from ACG put on the car, and the difference is pretty good so far. I want to caveat this by saying that I use the car as a daily driver, and can’t speak to their performance in track conditions. Also, I have only had them on the car for about 150 miles, so I can’t say what the long term results will look like. Having said that, I am not embarrassed anymore when stopping. It no longer sounds like a school bus coming to a stop, yay! I can't tell a difference between the stopping power of these pads versus the stock ones either.

In regards to brake dust, its still there, but no where near as bad as the stock pads. Below are two videos that I made. The first one is on the stock pads, wheels washed, and with 100 miles of driving. The second video is the same conditions, but on the ACG pads.

Stock pads:


New pads:

Last edited by ambletx; 09-22-2019 at 09:44 AM..
Appreciate 2
      09-22-2019, 11:46 AM   #2
josec70
Major General
josec70's Avatar
United_States
4051
Rep
5,228
Posts

Drives: 22' Individual Chalk M5C
Join Date: Dec 2015
Location: Miami

iTrader: (2)

I have had these for about 4K miles and, so far, so good. No noise and less dust.
__________________
CURRENT: 22' INDIVIDUAL M5| CHALK | TARTUFO | CCB | MPE | H&R | IND
GONE: 19' M5C| SINGAPORE GREY| ARAGON|VELOS VLS-06|H&R|iPE|IND|XPEL|CF|RADENSO
GONE: 15' F10 M5|BSM|BLACK|VELOS VSS-S2|KW|AKRA|IND|CF |ESCORT 360|VELOS PIGGY
GONE: 13' F10 M5|SG|BLACK|AKRA|KW|IND
LONG GONE: 09' E60 M5|02' E39 M5
Appreciate 1
ambletx514.50
      09-25-2019, 01:49 AM   #3
Greer
Colonel
Greer's Avatar
1883
Rep
2,498
Posts

Drives: 2022 M5 Competition
Join Date: Dec 2007
Location: Los Angeles

iTrader: (0)

Yes, I have these pads and no more brake noise. There are many owners who are still putting up with squeaking steel brakes, get these pads and stop the madness.
__________________
2022 F90 M5 Competition & 2019 M2 Competition
2019 F90 M5 Competition
2017 F80 M3 Competition
2014 F10 M5 Competition
2003 E39 M5
Appreciate 2
ambletx514.50
r33_RGSport12803.00
      09-25-2019, 06:50 AM   #4
Gassy
Soporificist
160
Rep
327
Posts

Drives: 2019 M5- Rhodonite/Aragon
Join Date: May 2010
Location: North Carolina

iTrader: (0)

Ambletx...Can you tell where you got these, the cost and who installed them for you? Thanks...
__________________
2019 M5 Rhodonite Silver// 2016 M4- retired// 2011 750i- retired// 2004 740i- retired//
2001 740i- retired// 1998 M3- retired
Appreciate 0
      09-25-2019, 07:55 AM   #5
ambletx
First Lieutenant
ambletx's Avatar
515
Rep
382
Posts

Drives: 2021 M5 Comp
Join Date: Oct 2017
Location: Austin, TX

iTrader: (0)

Quote:
Originally Posted by Gassy View Post
Ambletx...Can you tell where you got these, the cost and who installed them for you? Thanks...
Sure. I got them from ACG Automotive (https://acgautomotive.com/). Girad is the sales person that I dealt with. You may have to call around for an installer in your area. I called several different places, and no one would install them if you didn't purchase the pads through them. We have an import tuner shop her in Austin (Eurocharged: https://www.eurocharged.com/), and they ended up doing the install for $250.
Appreciate 0
      09-25-2019, 02:34 PM   #6
hybrid_eg
Captain
hybrid_eg's Avatar
United_States
851
Rep
818
Posts

Drives: 90 S13, 22 MSP, 23 JLUR 4xe
Join Date: Apr 2006
Location: Newport Beach

iTrader: (22)

These are porterfield brake pads, anyone can install them, its no different then installing a different brand pad. The issue with the rear pad had been fixed as i verified this with porterfield staff at their production facility in Costa Mesa, CA when i placed my order earlier this year.

Pads eliminate noise entirely but not the dust, although its significantly improved over stock, i also did not notice any performance drop over stock pad.

I'm curious to see dust levels on "Powerstops" once they release them hopefully end of this year, if we rely on historical data their pads produce nearly no dust.. but performance may suffer a bit so it will be interesting to compare. Also their price point should be much cheaper than overpriced Porterfields..
Appreciate 1
r33_RGSport12803.00
      09-25-2019, 02:47 PM   #7
ResidualJinx
Private First Class
111
Rep
164
Posts

Drives: 2018 BMW M5
Join Date: Apr 2019
Location: Maryland

iTrader: (0)

Quote:
Originally Posted by Gassy View Post
Ambletx...Can you tell where you got these, the cost and who installed them for you? Thanks...
I think I paid around $320 to have my local BMW dealer install my ACG pads
Appreciate 0
      09-25-2019, 06:36 PM   #8
Gassy
Soporificist
160
Rep
327
Posts

Drives: 2019 M5- Rhodonite/Aragon
Join Date: May 2010
Location: North Carolina

iTrader: (0)

Quote:
Originally Posted by ambletx View Post
Sure. I got them from ACG Automotive (https://acgautomotive.com/). Girad is the sales person that I dealt with. You may have to call around for an installer in your area. I called several different places, and no one would install them if you didn't purchase the pads through them. We have an import tuner shop her in Austin (Eurocharged: https://www.eurocharged.com/), and they ended up doing the install for $250.
Thank you, amigo.
__________________
2019 M5 Rhodonite Silver// 2016 M4- retired// 2011 750i- retired// 2004 740i- retired//
2001 740i- retired// 1998 M3- retired
Appreciate 0
      09-25-2019, 07:17 PM   #9
shellbmb
Lieutenant
shellbmb's Avatar
United_States
197
Rep
572
Posts

Drives: 2022 F90 M5C
Join Date: Apr 2013
Location: ATX

iTrader: (0)

Quote:
Originally Posted by ResidualJinx View Post
I think I paid around $320 to have my local BMW dealer install my ACG pads
Did they discourage you from putting on aftermarket pads? Or were they happy to oblige?
Appreciate 0
      09-26-2019, 12:08 AM   #10
ResidualJinx
Private First Class
111
Rep
164
Posts

Drives: 2018 BMW M5
Join Date: Apr 2019
Location: Maryland

iTrader: (0)

Quote:
Originally Posted by shellbmb View Post
Quote:
Originally Posted by ResidualJinx View Post
I think I paid around $320 to have my local BMW dealer install my ACG pads
Did they discourage you from putting on aftermarket pads? Or were they happy to oblige?
They didn't have problems with it, I totally expected them to make a big deal about aftermarket pads but nope. They over quoted me at first saying it would cost $250 per axle but once the work was done they said it went much faster than expected and only had me pay for the hours the tech actual spent on the brakes.
Appreciate 0
      09-26-2019, 12:13 AM   #11
Pimpsy
Captain
418
Rep
862
Posts

Drives: 2019 M5C
Join Date: Jan 2012
Location: NJ

iTrader: (0)

ACG sent me pads they know we're not manufactured properly. I still don't have rear brake pad sensors installed because of it. They never bothered to go anything about it despite numerous calls and email.

WTF kind of company sends out defective product at this price point then just shrugs it off? ACG...that's who.

YMMV...good luck with that.
__________________
Retired 2016 BMW 550i xDrive MSport | 2013 BMW 550i xDrive MSport | 2012 BMW 535i xDrive | 1988 BMW 325ic | 1984 BMW 318i
Appreciate 0
      09-26-2019, 12:16 AM   #12
Pimpsy
Captain
418
Rep
862
Posts

Drives: 2019 M5C
Join Date: Jan 2012
Location: NJ

iTrader: (0)

Almost forgot...they still squeal.
At least the dust is reduced. As long as I check the wear before the pads get low and destroy the rotors it should be ok. *eye roll*
__________________
Retired 2016 BMW 550i xDrive MSport | 2013 BMW 550i xDrive MSport | 2012 BMW 535i xDrive | 1988 BMW 325ic | 1984 BMW 318i
Appreciate 0
      09-26-2019, 01:32 AM   #13
Greer
Colonel
Greer's Avatar
1883
Rep
2,498
Posts

Drives: 2022 M5 Competition
Join Date: Dec 2007
Location: Los Angeles

iTrader: (0)

Quote:
Originally Posted by Pimpsy View Post
Almost forgot...they still squeal.
At least the dust is reduced. As long as I check the wear before the pads get low and destroy the rotors it should be ok. *eye roll*
Important, these after market pads have to be bedded correctly when first installed. If not, performance will not be optimal.
__________________
2022 F90 M5 Competition & 2019 M2 Competition
2019 F90 M5 Competition
2017 F80 M3 Competition
2014 F10 M5 Competition
2003 E39 M5
Appreciate 1
r33_RGSport12803.00
      09-30-2019, 06:53 PM   #14
Steeve19M5CP
Lieutenant
194
Rep
459
Posts

Drives: 2019 MBB Blue M5 Competition
Join Date: Dec 2018
Location: South Florida, USA

iTrader: (0)

ACG is made by Porterfield.....The loud brake squeal noise and crazy black brake dust is due to the cheap oem pads they use.........I had the issues and fixed it by replacing the pads with Porterfields r4s street pads...just call them and order direct.....now I have zero squeal and less dust

https://www.porterfield-brakes.com/m...akes/R4-S.html
Appreciate 1
F90mfunf414.00
      01-15-2020, 03:55 PM   #15
F90mfunf
Private
F90mfunf's Avatar
414
Rep
77
Posts

Drives: 2021 M5 Comp
Join Date: Jan 2020
Location: Los Angeles CA

iTrader: (0)

Garage List
  [10.00]
I had the new pads by porterfield installed a couple of days ago at Autotalent I have definitely noticed a difference in stopping power, noise reduction and a lot less dust, definitely better than how they were before it was sounding like a school bus
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 05:19 PM.




m5post
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