BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Suspension | Brakes | Chassis
 
European Auto Source
Post Reply
 
Thread Tools Search this Thread
      01-12-2013, 09:34 PM   #67
alpina527
Banned
United Kingdom
15
Rep
638
Posts

 
Drives: 2008 E92 M3 DCT JZB/FR
Join Date: Jan 2010
Location: London, England

iTrader: (1)

Standard front caliper is 6.3 kg including pads. (14lbs)

Appreciate 0
      01-13-2013, 06:44 AM   #68
Raucky2000
Lieutenant
Raucky2000's Avatar
6
Rep
483
Posts

 
Drives: SGM E90 M3 dct
Join Date: Nov 2012
Location: Ohio

iTrader: (3)

RB listed the rotors on the front to be 4.5lbs lighter each and the rear rotors to be 6lbs lighter each, compared to stock rotors.

Total Rotor Weight Savings per RB = 21lbs.

After moving the RB rotors and Stock rotors around in the shop, the fronts rotors felt a lot lighter than Stock ones. I have hard time believing there is only a 4.5lb difference between them. The reason I say this, is because the rear ones felt closer to the stock weight, but yet had a bigger weight difference. Don't get me wrong, the rears where def lighter than stock.

Caliper is listed at 4.5lbs and 6lbs with bracket if I'm not mistaken. The brackets where a lot lighter than stock (like a 1.5lbs). Add pads in at roughly 3lbs granted and you are at ~9lbs for a complete assembly.

Total Caliper Assembly Weight Savings = ~10lbs
^In my org post like a d-bag, I forgot to include a pad weight...sorry guys

My Bad.
Appreciate 0
      01-13-2013, 10:04 AM   #69
Raucky2000
Lieutenant
Raucky2000's Avatar
6
Rep
483
Posts

 
Drives: SGM E90 M3 dct
Join Date: Nov 2012
Location: Ohio

iTrader: (3)

Here are the weights of the 3 kits you guys are probably comparing weights to the most. These weights are listed in the sticky: Weight Savings vs. Cost, on this forum section.

BRAKES
Stock assembly (F/R): 37.2/30.7 lbs
F caliper assemb: 14.5 lbs with pads and rubber line (Badfish weighed this)
F rotor assemb: 22.7 lbs (Badfish weighed this)
R caliper assemb: 11.0 lbs with pads and rubber line (Badfish weighed this)
R rotor assemb: 19.7 lbs (Badfish weighed this)

Brembo 365x34 (F) 345x28 (R) Kit
Brembo F caliper assemb: 14.0 lb (weighed by sparkyg)
Brembo F rotor assemb: 24.5 lb (weighed by sparkyg)
Brembo R caliper assemb: 9.5 lb (weighed by sparkyg)
Brembo R rotor assemb: 15.0 lb (weighed by sparkyg)
Cost: ~$6100
Weight savings: 9.8 lbs
cost/benefit: $622/lbs
http://www.m3post.com/forums/showthr...15#post5194815

Stoptech 380x35 (F) 355x32 (R) Kit
Stoptech F caliper assemb: 13.11 lbs with pads & bracket (Badfish weighed this)
Stoptech F rotor assemb: 21.01 lbs (Badfish weighed this)
Stoptech R caliper assemb: 11.15 lbs with pads & bracket (Badfish weighed this)
Stoptech R rotor assemb: 19.33 lbs (Badfish weighed this)
Cost: $5890
Weight savings: 4.6 lbs
cost/benefit: $1280/lbs
http://www.**********s.com/product.a...BK_E92_M3_RS10
http://www.m3post.com/forums/showthread.php?t=150944

Performance Friction 371x32 (F) 372x30 (R) Kit (prototype, production will use slightly ligther brackets)
Performance Friction F caliper and rotor assemb: 28 lbs with pads & bracket (James C weighed this)
Performance Friction R caliper and rotor assemb: 34 lbs (James C weighed this)
Cost: $8000
Weight savings: 12 lbs
cost/benefit: $666/lbs
http://www.m3post.com/forums/showthr...=232463&page=3
http://www.nexternal.com/bimmerworl/Product1060


Hope this helps some.
Appreciate 0
      01-18-2013, 08:45 AM   #70
Chriskm3
Colonel
Chriskm3's Avatar
Canada
28
Rep
2,218
Posts

 
Drives: M3
Join Date: Jul 2012
Location: Toronto

iTrader: (4)

[/quote]All of the major BBK kits weight about the same as OEM brakes (a little less than std to be fair), which was a big turnoff to me. I DIDN'T BUY THIS KIT BECAUSE I'M CHEAP!!! I bought this kit because I come from a racing history and for my application this I talked to their service department for hours, trust me, they know their Sh*t.

Oh I'm prob letting the cat out of the bag, but someone already asked about. "Why only a 4 pot setup?" Lets just say RB has a surprise for us next season with something bigger and badder (?) for the front end and we can still use the 4 pot calipers on the rear! Sorry RB, but people needed to know that so please DON'T hate me!!!!! Plus now the pressure is on to finish your R&D earlier! [/quote]

Misleading information. !!
I also contacted racing brake and exchanged info with Alex and Kristin and was informed that they are Not working on a rear caliper upgrade.

Link above shows Stoptech 355 kit for 2200 which is less than racing brake kit an offers the rear bbk set so the option is there for the future.
Please clarify

Last edited by Chriskm3; 01-18-2013 at 09:26 AM.
Appreciate 0
      01-18-2013, 09:33 AM   #71
THE TECH
BimmerPost Supporting Vendor
THE TECH's Avatar
United_States
157
Rep
13,121
Posts


 
Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

iTrader: (45)

Garage List
Send a message via AIM to THE TECH Send a message via Skype™ to THE TECH
Quote:
Originally Posted by Chriskm3 View Post
Misleading information. !!
I also contacted racing brake and exchanged info with Alex and Kristin and was informed that they are Not working on a rear caliper upgrade.

Link above shows Stoptech 355 kit for 2200 which is less than racing brake kit an offers the rear bbk set so the option is there for the future.
Please clarify
A rear kit will be forthcoming as we worked on both front and rear setups with them.
__________________
Appreciate 0
      01-18-2013, 12:12 PM   #72
Chriskm3
Colonel
Chriskm3's Avatar
Canada
28
Rep
2,218
Posts

 
Drives: M3
Join Date: Jul 2012
Location: Toronto

iTrader: (4)

Quote:
Originally Posted by THE TECH View Post
A rear kit will be forthcoming as we worked on both front and rear setups with them.
Why is it that racingbrake is not aware of this?
Appreciate 0
      01-18-2013, 12:14 PM   #73
THE TECH
BimmerPost Supporting Vendor
THE TECH's Avatar
United_States
157
Rep
13,121
Posts


 
Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

iTrader: (45)

Garage List
Send a message via AIM to THE TECH Send a message via Skype™ to THE TECH
Quote:
Originally Posted by Chriskm3 View Post
Why is it that racingbrake is not aware of this?
I can't tell you what RB management tells their employees. I have only worked with the owner and no one else. To say that RB is not aware of this is misleading.
__________________
Appreciate 0
      01-18-2013, 01:14 PM   #74
Chriskm3
Colonel
Chriskm3's Avatar
Canada
28
Rep
2,218
Posts

 
Drives: M3
Join Date: Jul 2012
Location: Toronto

iTrader: (4)

Do you represent racing brake ?
Appreciate 0
      01-18-2013, 01:15 PM   #75
THE TECH
BimmerPost Supporting Vendor
THE TECH's Avatar
United_States
157
Rep
13,121
Posts


 
Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

iTrader: (45)

Garage List
Send a message via AIM to THE TECH Send a message via Skype™ to THE TECH
Quote:
Originally Posted by Chriskm3 View Post
Do you represent racing brake ?
No, just sell the products that we helped them engineer.
__________________
Appreciate 0
      01-18-2013, 02:25 PM   #76
Chriskm3
Colonel
Chriskm3's Avatar
Canada
28
Rep
2,218
Posts

 
Drives: M3
Join Date: Jul 2012
Location: Toronto

iTrader: (4)

Just had a comverstion with Alex from racing brake. I can't wait to get their product on my car. Good guys to deal with. I will be writing a review on their bbk kits
Appreciate 0
      01-18-2013, 02:33 PM   #77
THE TECH
BimmerPost Supporting Vendor
THE TECH's Avatar
United_States
157
Rep
13,121
Posts


 
Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

iTrader: (45)

Garage List
Send a message via AIM to THE TECH Send a message via Skype™ to THE TECH
Quote:
Originally Posted by Chriskm3 View Post
Just had a comverstion with Alex from racing brake. I can't wait to get their product on my car. Good guys to deal with. I will be writing a review on their bbk kits
Can't wait to hear it!
__________________
Appreciate 0
      01-21-2013, 02:12 PM   #78
rantarM3
First Lieutenant
3
Rep
317
Posts

 
Drives: E90 M3
Join Date: Aug 2011
Location: Florida

iTrader: (1)

Quote:
Originally Posted by THE TECH View Post
Can't wait to hear it!
+1
Appreciate 0
      01-21-2013, 04:59 PM   #79
Raucky2000
Lieutenant
Raucky2000's Avatar
6
Rep
483
Posts

 
Drives: SGM E90 M3 dct
Join Date: Nov 2012
Location: Ohio

iTrader: (3)

Glad to hear about another kit gettin installed! I already told them to sell me their first kit for the rear. It's going to get made one way or another...meaning I'll just have them custom make it for me worse case.
Appreciate 0
      01-21-2013, 08:50 PM   #80
eVitO
trollololol
eVitO's Avatar
Ukraine
21
Rep
880
Posts

 
Drives: Too slow
Join Date: Nov 2008
Location: Los Angeles/UCSD

iTrader: (0)

Send a message via AIM to eVitO
I have RB rotors on my G37. Car stops on a dime... Threw in stoptech pads in the front and project mu's in the rear, and it's amazing. When I got corner balanced, I weighed 3690 w/ me in it (I'm like 170ish), so the cars not that light to begin with either.
__________________
Quote:
Originally Posted by DisGuy View Post
god damn that car is nice. i would sell my girlfriend for it
Quote:
Originally Posted by mastek View Post
why dont you leave him a love note on the car -- with hearts and shit

lol - seriously tho -- I find notes on my car sometimes -- but it's NEVER from girls -- -- damm M3 is a ghey magnet
Appreciate 0
      01-21-2013, 10:05 PM   #81
Raucky2000
Lieutenant
Raucky2000's Avatar
6
Rep
483
Posts

 
Drives: SGM E90 M3 dct
Join Date: Nov 2012
Location: Ohio

iTrader: (3)

^ Yup, now my fully loaded E90 M3 out brakes my buddies '05 STI w/ hawk pads (think they are hps pads)
Appreciate 0
      01-24-2013, 12:34 PM   #82
Chriskm3
Colonel
Chriskm3's Avatar
Canada
28
Rep
2,218
Posts

 
Drives: M3
Join Date: Jul 2012
Location: Toronto

iTrader: (4)

Here is quick shot
Attached Images
 
Appreciate 0
      01-24-2013, 12:38 PM   #83
THE TECH
BimmerPost Supporting Vendor
THE TECH's Avatar
United_States
157
Rep
13,121
Posts


 
Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

iTrader: (45)

Garage List
Send a message via AIM to THE TECH Send a message via Skype™ to THE TECH
Quote:
Originally Posted by Chriskm3 View Post
Here is quick shot
__________________
Appreciate 0
      01-24-2013, 01:05 PM   #84
Chriskm3
Colonel
Chriskm3's Avatar
Canada
28
Rep
2,218
Posts

 
Drives: M3
Join Date: Jul 2012
Location: Toronto

iTrader: (4)

Additionally r b is sending me colour matched paint for the rear calipers.

Last edited by Chriskm3; 01-24-2013 at 05:14 PM.
Appreciate 0
      01-24-2013, 02:23 PM   #85
Raucky2000
Lieutenant
Raucky2000's Avatar
6
Rep
483
Posts

 
Drives: SGM E90 M3 dct
Join Date: Nov 2012
Location: Ohio

iTrader: (3)

^ Nice touch on the color match paint! Show us a pic when you get done with them, can't wait to c em.
Appreciate 0
      01-25-2013, 11:00 PM   #86
Raucky2000
Lieutenant
Raucky2000's Avatar
6
Rep
483
Posts

 
Drives: SGM E90 M3 dct
Join Date: Nov 2012
Location: Ohio

iTrader: (3)

Here you go guys...
Attached Images
    
Appreciate 0
      01-26-2013, 03:14 AM   #87
Superfly_M3
Captain
18
Rep
964
Posts

 
Drives: 2011 M3
Join Date: Sep 2011
Location: Toronto

iTrader: (0)

Quote:
Originally Posted by 1MOREMOD View Post
yep i stand to save 16.4 lbs per corner going from vmrs-ad08s and stock brakes to apex ec7-nt01s and stoptech trophys. enough to get me under 3600 on a fully loaded e90. still a pig.
How much doesthe Apex EC7-nt01 weight?
Can you post the tire and rim size?
Thanks.
Appreciate 0
      01-26-2013, 03:15 AM   #88
Superfly_M3
Captain
18
Rep
964
Posts

 
Drives: 2011 M3
Join Date: Sep 2011
Location: Toronto

iTrader: (0)

Quote:
Originally Posted by Chriskm3 View Post
Here is quick shot
Brakes look good. I heard the install was a piece of cake
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
Forum Jump


All times are GMT -5. The time now is 04:46 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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