BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
M2 Technical Topics > Suspension | Brakes | Chassis > Alcon OE Replacment Rotors - BMW F87 M2

Closed Thread
 
Thread Tools Search this Thread
      03-08-2018, 06:52 PM   #1
AutoTalent
Lieutenant General
AutoTalent's Avatar
2301
Rep
12,654
Posts

Drives: e92 M3 6mt | e60 M5 6mt
Join Date: Jul 2007
Location: Los Angeles

iTrader: (11)

Alcon OE Replacment Rotors - BMW F87 M2


For questions please email Golan@AutoTalent.com !


ALCON 2-PIECE DISC ASSEMBLY BMW F8X M2 / M3 / M4
Brake performance has always been one of the weak links of the BMW M Cars since the E36, E46 and E90/E92 M3 models came with single piston sliding calipers and heavy one piece discs. Chances are if one takes their M3 to the racetrack and needs significant braking improvement, the only option is to completely upgrade the braking system.

On the new F8X M3 and M4, BMW has upgraded the OE calipers to Monobloc 4 piston front and 2 piston rear units which are significantly better than the previous models. Since the role of the brake discs is to be a thermal heat sink, as they absorb most of the “load” in the braking system, one of the most cost effective brake upgrades one can do for their BMW F8X M3 or M4 to improve disc life and overall performance is to upgrade the OE drilled discs to Alcon Motorsport 2-piece discs.

The OE drilled discs found on the M3 and M4 are designed for maximum comfort, low noise and to be cost effective to the vehicle manufacturer. However, they are not suited for track day or heavy duty use since drilled discs are more prone to fatigue and heat related cracking. Since the new BMW M3 and M4 are considerably faster out of the box (3400 lbs, 425 horsepower) compared to the older BMW M models, and easier to upgrade (raising the boost, changing suspension, swapping to larger tires), the brake discs will be the first to get taxed. Alcon Motorsport discs are slotted instead of drilled and feature a stronger proprietary cast iron blend compared to the OE discs which makes them more suitable for higher demand usage.

This Alcon 2-piece disc assembly upgrade also works with the OE brake system components, needing no additional modifications, which also makes the upgrade very cost effective long term.





One of the main consumable costs involved when running any car aggressively on the street or on the race track is that of the brake components (brake discs, pads, fluids). The current generation BMW M cars are significantly faster and more demanding on brakes compared to the previous model BMW M models (E46, E92, etc…). Running the OEM discs and pads at elevated temperatures (like those found on the racetrack) will almost always result in brake fade, loss of performance, and excessive wear rates of the discs and /or pads.


While it is possible to simply keep spending excessive amounts of money on replacement OE discs, the metallurgy and design of the OE discs are designed for maximum comfort and cost savings to the vehicle manufacturer, not for maximum longevity or performance. Swapping the OE discs to Motorsport grade brake discs, which are designed for use under the most severe braking conditions, will reduce the overall long term costs of brake consumables on the track and improve the overall performance of the brake system.

Multiple BMW teams have relied on Alcon Motorsport discs in professional racing categories such as IMSA, Grand-Am, and Pirelli World Challenge for their longevity, resistance to thermal cracking, and improved performance. The same Alcon Motorsport discs used in professional racing with BMW Motorsport teams such as Fall Line Racing and Turner Motorsport are also used in the Alcon 2-piece disc program. Below are some of the key benefits of Alcon Motorsport discs over some of the other discs in the market:





Appreciate 0
      03-12-2018, 07:52 AM   #2
Bee Pee
Brigadier General
United Kingdom
1738
Rep
4,496
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Would love to know if you get these rotors to work with gold CCB calipers so as we could have a 6 pot + 4pot OEM caliper set up for 18" wheel with more robust rotors.....
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
Appreciate 0
      03-12-2018, 01:47 PM   #3
AutoTalent
Lieutenant General
AutoTalent's Avatar
2301
Rep
12,654
Posts

Drives: e92 M3 6mt | e60 M5 6mt
Join Date: Jul 2007
Location: Los Angeles

iTrader: (11)

Quote:
Originally Posted by Bee Pee View Post
Would love to know if you get these rotors to work with gold CCB calipers so as we could have a 6 pot + 4pot OEM caliper set up for 18" wheel with more robust rotors.....
Unfortunately not
Appreciate 0
      03-13-2018, 09:17 AM   #4
Bee Pee
Brigadier General
United Kingdom
1738
Rep
4,496
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Quote:
Originally Posted by AutoTalent View Post
Unfortunately not
That’s a shame
Appreciate 0
      03-20-2018, 02:40 PM   #5
Franzino
Captain
Franzino's Avatar
Belgium
860
Rep
923
Posts

Drives: M2 MY17 / Alpine A110 MY19
Join Date: Feb 2010
Location: Belgium

iTrader: (0)

When using the OEM M2 brake callipers with these Alcon discs...is there really any noticeable difference in brake performance? I was under the impression; the weak link in the M2 brake system is the rather small 4-pot calliper and small brake pad contact area....this is not going to change with fitting different discs.
__________________
Appreciate 0
      03-22-2018, 07:30 PM   #6
cookiesowns
;)
cookiesowns's Avatar
587
Rep
898
Posts

Drives: X5 45e, 535i N54, X3 N55
Join Date: Jan 2011
Location: West

iTrader: (0)

Do the rotor hats on the rear come re-enforced for parking brake usage?
__________________
BM3, MHD, ECUTek Calibrator | N55/S58 specialist | 2023 X5 45e Frozen Marina Bay Blue
Appreciate 0
      03-23-2018, 09:46 AM   #7
tenkies
Second Lieutenant
United_States
147
Rep
266
Posts

Drives: 2017 M2 LBB 6MT
Join Date: Oct 2017
Location: Socal

iTrader: (0)

Any weight savings from the OEM rotors?
Appreciate 0
      03-25-2018, 06:37 AM   #8
Franzino
Captain
Franzino's Avatar
Belgium
860
Rep
923
Posts

Drives: M2 MY17 / Alpine A110 MY19
Join Date: Feb 2010
Location: Belgium

iTrader: (0)

Not a lot info to gain here about those Alcon rotors...

Is not that the text says; "that it will improve the overall performance of the brake system"...that it really is the case. 3 detailed questions about the rotors and zero answers. Shame the vendor does not want to give more info then the same text that is on every website where they sell these Alcon rotors. Does not give me a lot of faith about the so called advantages of only changing the rotors and keeping the small OEM callipers.
__________________

Last edited by Franzino; 03-25-2018 at 06:42 AM..
Appreciate 0
      03-28-2018, 01:56 PM   #9
Franzino
Captain
Franzino's Avatar
Belgium
860
Rep
923
Posts

Drives: M2 MY17 / Alpine A110 MY19
Join Date: Feb 2010
Location: Belgium

iTrader: (0)

So no reply from the Alcon vendor who openend this topic. I did my own research and talked to some specialist who prepare BMW's for trackdays (+ fast street) and are also sellers of Alcon. Only replacing the M2 rotors is not going to make that big of an difference and they all advised me to stick with the OEM BMW rotors (that are not bad) or upgrades rotors from other brands then Alcon.

From their experience; Alcon product seem to have more issues then other high end brake brands. Getting your parts delivered in a normal time, also seems to be really difficult with Alcon and waiting is long. Alcon headquarters also does not respond to any e mail from me. I asked 2 other European Alcon distributors about this set and those two could not deliver 1 single front + rear set. I needed to buy more sets at once and also they where really vague considering the so called advantages that is stated in this vendors topic.

Sorry Autotalent; nothing against you guys...but this was the outcome of my own research about the product, where you guys have no extra info about besides the same sellers text that is found everywhere.
__________________
Appreciate 0
      04-02-2018, 02:45 PM   #10
AutoTalent
Lieutenant General
AutoTalent's Avatar
2301
Rep
12,654
Posts

Drives: e92 M3 6mt | e60 M5 6mt
Join Date: Jul 2007
Location: Los Angeles

iTrader: (11)

Quote:
Originally Posted by Franzino View Post
So no reply from the Alcon vendor who openend this topic. I did my own research and talked to some specialist who prepare BMW's for trackdays (+ fast street) and are also sellers of Alcon. Only replacing the M2 rotors is not going to make that big of an difference and they all advised me to stick with the OEM BMW rotors (that are not bad) or upgrades rotors from other brands then Alcon.

From their experience; Alcon product seem to have more issues then other high end brake brands. Getting your parts delivered in a normal time, also seems to be really difficult with Alcon and waiting is long. Alcon headquarters also does not respond to any e mail from me. I asked 2 other European Alcon distributors about this set and those two could not deliver 1 single front + rear set. I needed to buy more sets at once and also they where really vague considering the so called advantages that is stated in this vendors topic.

Sorry Autotalent; nothing against you guys...but this was the outcome of my own research about the product, where you guys have no extra info about besides the same sellers text that is found everywhere.

Hi, sorry for just seeing this. I can't speak about Alcon themselves but we stock a lot of the brake kits for people interested. Sending me an email gets the quickest reply from me.
Appreciate 0
      06-14-2018, 02:25 PM   #11
AutoTalent
Lieutenant General
AutoTalent's Avatar
2301
Rep
12,654
Posts

Drives: e92 M3 6mt | e60 M5 6mt
Join Date: Jul 2007
Location: Los Angeles

iTrader: (11)

Bump!
Appreciate 0
      07-03-2018, 05:37 PM   #12
AutoTalent
Lieutenant General
AutoTalent's Avatar
2301
Rep
12,654
Posts

Drives: e92 M3 6mt | e60 M5 6mt
Join Date: Jul 2007
Location: Los Angeles

iTrader: (11)

Bump!
Appreciate 0
Closed Thread

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 11:33 AM.




m2
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