125i Brake upgrade to F30

golfer23rm · 07-09-2021, 08:33 AM

So as we all know, E82 125i brakes are crap.

so looking at this post before:
https://www.1addicts.com/forums/show....php?t=1306682
CHOICES
There are basically four or five different types of Caliper and Rotor upgrades you can make.
1. The calipers that come stock on the 135i and also appear to be sold as 6 piston BMW Performance Brakes. (I did not go with this upgrade due to numerous posts regarding the pistons fracturing when tracked.)
2. M-SPORT CALIPERS (Blue four piston calipers)
3. Blue M-SPORT Four piston Brembo Calipers
3a. BMW M Performance Brake System, Yellow F30 F31 F32 F33 F34 F36 Big Brembo Kit.
4. F30 - 335i –Standard model Calipers (Grey Brembos)
5. Big Brake Kit from Stop Tech, Brembo, etc.

My question is, where would F30 320i brakes fall in line?
Reason being, the 135i, 335i, M Sport etc always want a premium from breakers.

But are the common F30 320i/d brakes better than the setup on the 125i?
if they are plug and play, then i would have better brakes at a decent price. i dont track the car, its a daily, A to B. But the brakes are def something that bothers me on the car.

can this work?
have a good weekend all!

Almuliman · 07-09-2021, 01:16 PM

Quote:

Originally Posted by golfer23rm

So as we all know, E82 125i brakes are crap.

I haven't really pushed my 128i (M Sport, but some kind of coilovers in the front and non-stock springs / dampers in the rear) hard for extended runs yet, but I've found myself ... let's say underwhelmed by the brakes a few times already.

I'm watching this thread

golfer23rm · 07-10-2021, 08:28 AM

Quote:

Originally Posted by Almuliman

I haven't really pushed my 128i (M Sport, but some kind of coilovers in the front and non-stock springs / dampers in the rear) hard for extended runs yet, but I've found myself ... let's say underwhelmed by the brakes a few times already.

I'm watching this thread

If you track the car then go for the bigger brakes, but, if you're like me, and just need some better stopping, lets hope someone can comment and guide us in the right direction.

asbrr · 07-13-2021, 11:18 AM

I don't think there's many people that have upgraded to F30 320i brakes because everyone is looking for the multi piston setup usually. You'd have to go to realoem.com and compare part numbers and disc / rotor sizes to see if you're actually getting an upgrade. And then from there it's about looking at how the rotors are configured to see if they fit....bit of trial and error unfortunately.

wootloops · 07-18-2021, 11:44 AM

The 320i brakes are almost as small as the 125i brakes I believe. I think they are 312mm. Not worth it.

A good budget upgrade is the E90 335i front brakes. The calipers are direct bolt on and then you use a 348mm rotor. The calipers are readily available used for around $100 USD a piece or less.

https://www.1addicts.com/forums/show....php?t=1132152

07-09-2021, 08:33 AM	#1
golfer23rm Private First Class 45 Rep 198 Posts Drives: 2010 BMW 125i E82 Bluewater Join Date: Jul 2018 Location: South Africa iTrader: (0)	125i Brake upgrade to F30 So as we all know, E82 125i brakes are crap. so looking at this post before: https://www.1addicts.com/forums/show....php?t=1306682 CHOICES There are basically four or five different types of Caliper and Rotor upgrades you can make. 1. The calipers that come stock on the 135i and also appear to be sold as 6 piston BMW Performance Brakes. (I did not go with this upgrade due to numerous posts regarding the pistons fracturing when tracked.) 2. M-SPORT CALIPERS (Blue four piston calipers) 3. Blue M-SPORT Four piston Brembo Calipers 3a. BMW M Performance Brake System, Yellow F30 F31 F32 F33 F34 F36 Big Brembo Kit. 4. F30 - 335i –Standard model Calipers (Grey Brembos) 5. Big Brake Kit from Stop Tech, Brembo, etc. My question is, where would F30 320i brakes fall in line? Reason being, the 135i, 335i, M Sport etc always want a premium from breakers. But are the common F30 320i/d brakes better than the setup on the 125i? if they are plug and play, then i would have better brakes at a decent price. i dont track the car, its a daily, A to B. But the brakes are def something that bothers me on the car. can this work? have a good weekend all! __________________ "Life moves pretty fast. If you don't stop and look around once in a while, you could miss it...." Ferris Bueller
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07-13-2021, 11:18 AM	#4
asbrr Major 542 Rep 1,233 Posts Drives: 2014 335ix M-Sport Join Date: May 2015 Location: Toronto iTrader: (1)	I don't think there's many people that have upgraded to F30 320i brakes because everyone is looking for the multi piston setup usually. You'd have to go to realoem.com and compare part numbers and disc / rotor sizes to see if you're actually getting an upgrade. And then from there it's about looking at how the rotors are configured to see if they fit....bit of trial and error unfortunately.
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07-18-2021, 11:44 AM	#5
wootloops First Lieutenant 354 Rep 361 Posts Drives: 2013 E92 M3 Lime Rock Park Join Date: Aug 2012 Location: Jupiter, Florida iTrader: (0)	The 320i brakes are almost as small as the 125i brakes I believe. I think they are 312mm. Not worth it. A good budget upgrade is the E90 335i front brakes. The calipers are direct bolt on and then you use a 348mm rotor. The calipers are readily available used for around $100 USD a piece or less. https://www.1addicts.com/forums/show....php?t=1132152
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