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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Suspension | Chassis | Brakes > Brakes buying decision helper: "Factory", "M Sport Brakes", "M Performance Brakes"
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      12-14-2018, 06:15 AM   #177
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Quote:
Originally Posted by oceanview View Post
Hi

Just that you know, both of the numbers you have listed are for the dimpled and slotted version (not flat rotor surface).

1. There are two types of front calipers for M Sport brakes. One will fit for the 340mm rotor, one will fit for the 370mm front rotor. So if you have the blue calipers, you need to make sure, for which front rotor size your caliper is made.
(If you have a red, yellow or orange caliper, they are only available for 370mm front rotor)

2. 34106797603 would be fine if your calipers are for 370mm rotors

3. Rear rotor: I checked realoem.com and as far as I can see, for the 420d with B47 engine the 345mm rear rotor is 34206797600.
(This is important as the emergency brakes are different. If you have the wrong rotor part number, it will not fit to your rear emgergency brake!)
The 420d with the N47N engine would need 34206797598 as rear rotor.

http://www.realoem.com/bmw/enUS/show...diagId=34_2313


The best would be you ask your dealer to verify the needed parts based on the VIN Code of your car.
Hi

Many thanks for your explanation.

With my m sport calipers I can’t install 370mm :cry no problem
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      12-15-2018, 04:00 AM   #178
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Hey guys - I have a standard "Sport line" f30 328i RWD. I am picking up HRE FF01 and would really like to have some nicer looking calipers behind them. I was thinking of picking up standard "M Sport" brakes (blue), but then was flirting with the 370mm orange setup also.

Either way, do I need to code anything or is this a standard caliper/rotor/pad swap? Trying to avoid having to go to the dealer for any portion of this.
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      12-15-2018, 06:28 AM   #179
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Quote:
Originally Posted by 5mall5nail5 View Post
Hey guys - I have a standard "Sport line" f30 328i RWD. I am picking up HRE FF01 and would really like to have some nicer looking calipers behind them. I was thinking of picking up standard "M Sport" brakes (blue), but then was flirting with the 370mm orange setup also.

Either way, do I need to code anything or is this a standard caliper/rotor/pad swap? Trying to avoid having to go to the dealer for any portion of this.
Yes, normally you should code the actual brakes in use, for DSC, ABS and stuff to know how to balance brake pressure. (I believe)
There are many posts about that in this F3x forum.
Just give it search. (sorry, can't quickly give you a link)
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      03-18-2021, 11:32 PM   #180
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Quote:
Originally Posted by Supafish View Post
Hi. I have read all the posts so far, other posts and websites about the brake upgrade. Just one more clarification.

I have 2018 440i LCI that has grey 4 piston front and 1 piston rear setup with 19 inch wheels.
If i ever considered upgrading brake, can i do folllowing?

Option 1. Upgrade front rotor only to 370mm since the front 4 piston is same as blue m sport brake and leave rear rotor as it is.
Option 2. Upgrade rear brake to 2 piston M sport brake and rotor, and upgrade the front rotor only to 370mm.
Option 3. Upgrade rear brake to m sport 2 piston brake and rotor and leave front brake as it is. I.e. stock grey 4 piston with 340mm.

What would be the most value for money upgrade?

Or if all the options arent safe or can't be done, change all of them to msport front and rear?

Thanks in advance guys.
I've been strongly considering your option 3 for my car. Rear M sport calipers come up on ebay pretty regularly. You could probably have your front rotors powdercoated in a matching blue and have M decals put on them for a reasonable price.
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      05-28-2023, 11:46 PM   #181
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Not to revive a dead thread but just tried to install my m pref brake upgrade and I guess maybe it’s the n26 sulev models that utilize this 330x20 rotor.

Original Brakes Variant 3: Cars with Sport Package P337A = YES
Front rotor: 330x24mm (Millimeter) / Brake Caliper with 1 piston
Rear rotor: 300x20mm / Brake Caliper with 1 piston
(some cars show also to have 330x20mm Rear rotor with this upgrade)


Went out of my way to find the 598 version of the rotor around town and the mf’ers don’t fit over the parking shoe. Definitely pulled off 330mm rotors with the large hat. Car is stuck on jacks into a Monday holiday. Praying some parts counter tomorrow saves my ass with 600 model number in stock.
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