F30POST
F30POST
2012-2015 BMW 3-Series and 4-Series Forum
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > how to tell if I have M sport brakes??
Extreme Powerhouse
Post Reply
 
Thread Tools Search this Thread
      12-02-2021, 02:33 PM   #23
johnung
Brigadier General
United_States
2540
Rep
3,409
Posts

Drives: 2015 BMW 335i x-Drive Auto
Join Date: Oct 2017
Location: New Jersey/Philadelphia

iTrader: (1)

Garage List
Quote:
Originally Posted by BWbimmer View Post
The rear calper gives it away, 2 piston = M sport brakes:

https://www.realoem.com/bmw/enUS/sho...diagId=03_0108

The wheels fitting the calipers are mentioned too
Having the rear Brembo two-piston caliper over 345mm x 24mm rotors is definitely the M Sport (blue) or M Performance (red, orange or yellow) brake. But if the front calipers are blue, they can either be 370mm or 340mm. Red/yellow/orange fronts are 370mm.

Can either measure the blue front rotor diameter, or look at the raised lettering on the rear caliper casting to see if they say "340" or "370/380"
Appreciate 0
      12-02-2021, 02:35 PM   #24
johnung
Brigadier General
United_States
2540
Rep
3,409
Posts

Drives: 2015 BMW 335i x-Drive Auto
Join Date: Oct 2017
Location: New Jersey/Philadelphia

iTrader: (1)

Garage List
Quote:
Originally Posted by Logicoeur View Post
Lolllll Lolllll.
You can take off the wheel and measure the rotor diameter.

Since the caliper is Grey they either came from factory that way, Or the previous owner (if they exist) removed the paint and left them bare. The latter is highly unlikely. It is more likely the previous owner (if they exist) took this standard brake package off a 6cyl car and fitted it to your 328.

So let's go with the former. You do not the typical "Msport" brake package. Those are always painted (blue), and like above CAN be in 340/345, or 370/345. There is no way to confuse the rears with any other package as the calipers are completely different.

There are many variants of the front, your unpainted, blue (also on f8x stock), and (red, yellow, orange labled "MPerformance"). These all have the same 4pistons and only differ by the paint, and the length of the integrated caliper mount. All are a single piece of aluminum. If you can just look at the stamp on the back of the caliper. It will tell you the rotor sizes it will support.

There are countless threads about this so pick one and read for more detail.


Note: never buy F8x stock breaks at a premium. It's the same part number for us just a different application.

And to make things more complicated you will have users like me who took Grey unpainted fronts, and the 2piston rears, then powdercoated them . Moral of the story look at the back of the caliper if you can.
Excellent post. Here are some photos that illustrate what you said
Attached Images
   
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 08:00 AM.




f30post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, 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