[irfant24]

Hey all,

I would like to upgrade my 320i brakes.

I currently have the base brakes and would like stronger brakes so I’m thinking about better pads/discs or even the m sport brakes.


What do you guys recommend? ( I don’t want to break my bank account lol)


Thank you for your help!

[johnung]

Originally Posted by irfant24

Hey all,

I would like to upgrade my 320i brakes.

I currently have the base brakes and would like stronger brakes so I’m thinking about better pads/discs or even the m sport brakes.


What do you guys recommend? ( I don’t want to break my bank account lol)


Thank you for your help!

I have done several brake upgrades. To determine your options you need to measure the diameters of your front and rear rotors. And you need to determine whether you have the 160mm or 185mm emergency brake machined inside your rear rotor hats. See photos for how to accomplish these.

In general the least expensive upgrade that you make is to replace the stock brake pads with Hawk 5.0. They make a big difference.

Replace your brake fluid every two years for safety and performance. It picks up moisture.

Each rotor size uses a specific brake caliper. So knowing what you have now determines potential upgrades.

Hope this helps!

[speedbirdblack]

I have extensively researched on this very same subject. The most cost effective method would be to go with used M sport brakes. There are two options out there depending on the power rating.

1. 370mm Fornt 345mm Rear
2. 340mm Fornt 345mm Rear

Inorder to accommodate bigger calipers, you need to have minimum 18 inch wheels.
Parking brake shoe size is another concern.
Most people have managed to get them fitted without much sweat but there are complains about initial break bite. Some says upgrades must be coded out to make use of the full functionality.
However the master cylinder, servo unit, DSC control module are also differ between base and M Sport brakes. Therefore I'm not convinced how coding works without the correct hardware setup.

On the other hand, the bigger breaks adds significant amount of unsprung weight which will adversely affect handling characteristics. The lighter wheels sort out this issue hence the cost.

IMO, there is no use of upgrading brakes if your on stock power. Perhaps upgraded pads would be a better idea if your doing tracking. Then again upgraded pads are only effective when things get really hot and abused.
Cold stage you might lose brake bite due materials used aren't prioritize such conditions. Also these pads known to have excessive rotter wear.

If your doing it only for aesthetic appeal then all of the above is irrelevant.

[danb1979]

Originally Posted by irfant24

Hey all,

I would like to upgrade my 320i brakes.

I currently have the base brakes and would like stronger brakes so I’m thinking about better pads/discs or even the m sport brakes.


What do you guys recommend? ( I don’t want to break my bank account lol)


Thank you for your help!

Welcome to the forums; UK section here: https://f30.bimmerpost.com/forums/fo...412&order=desc

Worth asking in there too to see what other UK owners have done

Do you want bigger calipers/discs (ie a big brake upgrade) or do you just want better braking?

If you don't want to spend too much; stick with OEM spec discs, more aggressive pads (ie Ferodo DS2500s, Brembo HP2000s, ATE Ceramic pads) and go for HEL braided brake lines and a decent DOT4 or 5.1 fluid flush & refill (Motul RBF660 or similar)

OEM brake discs makers are ATE, Jurid, Textar and TRW - ATE are very good discs; their Ceramic pads are superb as well (you'll find these on Autodoc.co.uk)

But OEM discs can be good too partnered with decent pads; worth looking on eBay UK to see what the likes of Douglas Park BMW or Cotswolds BMW etc can offer; also worth contacting Cotswolds BMW as they offer forum discounts too

Upgrading to the blue Brembo M Sport brakes (370mm discs front - 345mm discs rear) isn't cheap; but you also need 18" F3x wheels at a minimum to fit over them

[irfant24]

Originally Posted by johnung

I have done several brake upgrades. To determine your options you need to measure the diameters of your front and rear rotors. And you need to determine whether you have the 160mm or 185mm emergency brake machined inside your rear rotor hats. See photos for how to accomplish these.

In general the least expensive upgrade that you make is to replace the stock brake pads with Hawk 5.0. They make a big difference.

Replace your brake fluid every two years for safety and performance. It picks up moisture.

Each rotor size uses a specific brake caliper. So knowing what you have now determines potential upgrades.

Hope this helps!

Thank you so much for the in depth answer - I really appreciate it.
After following your steps I can confirm I have the 160mm.
What upgrades can I do?

[irfant24]

Originally Posted by speedbirdblack

I have extensively researched on this very same subject. The most cost effective method would be to go with used M sport brakes. There are two options out there depending on the power rating.

1. 370mm Fornt 345mm Rear
2. 340mm Fornt 345mm Rear

Inorder to accommodate bigger calipers, you need to have minimum 18 inch wheels.
Parking brake shoe size is another concern.
Most people have managed to get them fitted without much sweat but there are complains about initial break bite. Some says upgrades must be coded out to make use of the full functionality.
However the master cylinder, servo unit, DSC control module are also differ between base and M Sport brakes. Therefore I'm not convinced how coding works without the correct hardware setup.

On the other hand, the bigger breaks adds significant amount of unsprung weight which will adversely affect handling characteristics. The lighter wheels sort out this issue hence the cost.

IMO, there is no use of upgrading brakes if your on stock power. Perhaps upgraded pads would be a better idea if your doing tracking. Then again upgraded pads are only effective when things get really hot and abused.
Cold stage you might lose brake bite due materials used aren't prioritize such conditions. Also these pads known to have excessive rotter wear.

If your doing it only for aesthetic appeal then all of the above is irrelevant.

Hi, thank you for your insight on this!
I am currently on stock power of 180 hp but looking to ECU remap it to 260+. which definitely needs better brakes.
i can confirm I have 18 inch alloys

[irfant24]

Originally Posted by danb1979

Welcome to the forums; UK section here: https://f30.bimmerpost.com/forums/fo...412&order=desc

Worth asking in there too to see what other UK owners have done

Do you want bigger calipers/discs (ie a big brake upgrade) or do you just want better braking?

If you don't want to spend too much; stick with OEM spec discs, more aggressive pads (ie Ferodo DS2500s, Brembo HP2000s, ATE Ceramic pads) and go for HEL braided brake lines and a decent DOT4 or 5.1 fluid flush & refill (Motul RBF660 or similar)

OEM brake discs makers are ATE, Jurid, Textar and TRW - ATE are very good discs; their Ceramic pads are superb as well (you'll find these on Autodoc.co.uk)

But OEM discs can be good too partnered with decent pads; worth looking on eBay UK to see what the likes of Douglas Park BMW or Cotswolds BMW etc can offer; also worth contacting Cotswolds BMW as they offer forum discounts too

Upgrading to the blue Brembo M Sport brakes (370mm discs front - 345mm discs rear) isn't cheap; but you also need 18" F3x wheels at a minimum to fit over them

Hi, thank you for your response!

Yes I am in need to better/stronger brakes as I am looking to ecu remap to 260 and currently, I don't see my brakes being sufficient so when I do go for the remap I will definitely struggle significantly.
I do have 18 inch alloys so upgrading to the m sport brakes are on the cards.
do you know how much that would be to upgrade to m sport ones.
are these good - https://www.autodoc.co.uk/abs/138666...UaAnNmEALw_wcB
ill for sure look into your suggestions.

thanks again!

[speedbirdblack]

Originally Posted by irfant24

Hi, thank you for your insight on this!
I am currently on stock power of 180 hp but looking to ECU remap it to 260+. which definitely needs better brakes.
i can confirm I have 18 inch alloys

In that case, stock breaking isn't enough.
I hope you will make an educated decision.
Let us know your findings and parts you have decided to change.

[johnung]

Originally Posted by irfant24

Thank you so much for the in depth answer - I really appreciate it.
After following your steps I can confirm I have the 160mm.
What upgrades can I do?

You’re welcome. Please provide the last 7 digits of your VIN so I can lookup accurate part numbers.

To summarize your two rear brake options:

1) KEEP THE CURRENT REAR 300mm CALIPERS

a)Replace pads with better performing street pads such as Hawk 5.0

b)If needed, replace 300x20 (160mm) rotors with either standard plain, or full crossdrilled which would be an upgrade. Avoid any dimpled or slotted rotors which are noisy and IMO not a performance upgrade. Zimmermann, Brembo, StopTech are all good brands for plain or full crossdrilled.

c)Replace rubber brake hoses with stainless steel. Details below.

d)Replace brake fluid which should be done every two years for safety since it picks up water from the air.

2) UPGRADE TO BREMBO 345mm REAR BRAKES

a) Replace stock with used pair of Brembo 345mm calipers.

b) Install better performing street pads such as Hawk 5.0

c)Install 345x24 (160mm) rotors with either standard plain, or full crossdrilled which would be an upgrade. Avoid any dimpled or slotted rotors which are noisy and IMO not a performance upgrade. Zimmermann, Brembo, StopTech are all good brands for plain or full crossdrilled.

d)Replace rubber brake hoses with stainless steel. Details below.

e)Replace brake fluid which should be done every two years for safety since it picks up water from the air.

f) Upgrade to larger rear dust shields using pie cut technique in attached photos.

g) When Bosch calipers are replaced by Brembo, the brake bias setting on the car must be coded. It’s a simple task that any BMW shop can do.

More details below:
—————————————-
I assume that your brakes are grey (and not blue which is the factory M Sport Brake Option). It’s likely that your brakes are Front 312mm x 24mm and Rear 300x20. A small number of cars came with Front 330x24 which take the same pads as 312x24. To the eye the calipers appear the same but they obviously take different sized rotors. So it’s important to actually measure at some point to confirm that you have 312mm and not 330mm.

REAR BRAKE UPGRADES
There are three rear brake calipers made for the F30:
345x24 Brembo 2-piston caliper
330x20 Bosch single piston caliper
300x20 Bosch single piston caliper

The only real consequence of having the smaller earlier 160mm rear e-brake is that the 330x20 rear brakes are not an upgrade option for you because I’ve never seen a rear 330x20 rotor with the smaller 160mm e-brake machined inside the hat. The 330x20 rotors all are made for 185mm e-brakes. That is disappointing because the used rear 330mm calipers are more plentiful and less costly than the 345mm calipers.

A pair of used 345mm Brembo calipers in good condition are typically $450-$550.

If you upgrade to rear 345mm brakes you will likely have to upgrade to larger rear dust shields as well. The shields would normally be expensive to install but mechanics have a work around of making a pie cut in the new shield to turn it into a simple bolt-on part. See attached photo.

If you decide to upgrade calipers, definitely take the opportunity to upgrade from rubber to stainless steel brake hoses. Since labor costs overlap. It eliminates mushy brake feel for a firmer brake pedal. I usually recommend StopTech, Turner or Goodridge (UK) Stainless lines. About $100-$150 for set of four lines. See photos for part numbers.

Note: Front brakes are always upgraded first because they do the majority of the work. No one would only upgrade the rear brakes.

I’ll post separately about front brake upgrade options. Hope this helps.

[danb1979]

Originally Posted by irfant24

Hi, thank you for your response!

Yes I am in need to better/stronger brakes as I am looking to ecu remap to 260 and currently, I don't see my brakes being sufficient so when I do go for the remap I will definitely struggle significantly.
I do have 18 inch alloys so upgrading to the m sport brakes are on the cards.
do you know how much that would be to upgrade to m sport ones.
are these good - https://www.autodoc.co.uk/abs/138666...UaAnNmEALw_wcB
ill for sure look into your suggestions.

thanks again!

260 isn't huge; more aggressive discs, pads and lines will work well for you in the first instance. My BMW E30 540i (Jap import) ran 290BHP and I ran stock E39 324mm/298mm brake calipers but with the ATE discs, ceramic pads, HEL braided lines and Motul brake fluid and the car stopped superbly; even with the tank of the 4.4 V8 up front!

But as for bigger brakes; easiest option is to go for the OEM blue Brembo fitted brakes that come on F3X cars already; you'll want the front blue Brembo's that fit the 370/380mm discs and the rear blue Brembo calipers that fit the 345mm discs

I have the 370/345mm brakes on my F31

Part numbers are here on RealOEM:

https://www.realoem.com/bmw/enUS/par...BMW-325d&mg=34

You need to ensure that the part says: "S2NHA=Yes"

As an example; there are many sets on eBay UK such as:

https://www.ebay.co.uk/itm/156020357...Bk9SR-T5hNP4Yw

But do your research when it comes to upgrading to these calipers as you'll need a new, correct size brake master cylinder too IIRC

[neonovvy]

Hi guys. Yesterday I successfully changed my brakes. From 312/300 to 340/330 (Brembo 4 pistons and bosch 1 piston). I have bleeded my brakes 2 times and my pedal is very spongy. I didnt code anything, is there something I can do to fix this? Thanks

[johnung]

Originally Posted by neonovvy

Hi guys. Yesterday I successfully changed my brakes. From 312/300 to 340/330 (Brembo 4 pistons and bosch 1 piston). I have bleeded my brakes 2 times and my pedal is very spongy. I didnt code anything, is there something I can do to fix this? Thanks

Typical brake bleeding does not remove small air bubbles that stubbornly cling to inside walls. The BMW ISTA brake bleeding procedure must be followed. BMW shops are all familiar with this. Here’s an excellent video from FaRKle! on how it’s done.

Also since you upgraded from the all Bosch setup to one that contains a Brembo caliper, the brake bias code must be updated. It’s also a simple change that any BMW shop should be able to do.

Congratulations on a nice upgrade. You should really notice a difference.

[irfant24]

Originally Posted by johnung

You’re welcome. Please provide the last 7 digits of your VIN so I can lookup accurate part numbers.

To summarize your two rear brake options:

1) KEEP THE CURRENT REAR 300mm CALIPERS

a)Replace pads with better performing street pads such as Hawk 5.0

b)If needed, replace 300x20 (160mm) rotors with either standard plain, or full crossdrilled which would be an upgrade. Avoid any dimpled or slotted rotors which are noisy and IMO not a performance upgrade. Zimmermann, Brembo, StopTech are all good brands for plain or full crossdrilled.

c)Replace rubber brake hoses with stainless steel. Details below.

d)Replace brake fluid which should be done every two years for safety since it picks up water from the air.

2) UPGRADE TO BREMBO 345mm REAR BRAKES

a) Replace stock with used pair of Brembo 345mm calipers.

b) Install better performing street pads such as Hawk 5.0

c)Install 345x24 (160mm) rotors with either standard plain, or full crossdrilled which would be an upgrade. Avoid any dimpled or slotted rotors which are noisy and IMO not a performance upgrade. Zimmermann, Brembo, StopTech are all good brands for plain or full crossdrilled.

d)Replace rubber brake hoses with stainless steel. Details below.

e)Replace brake fluid which should be done every two years for safety since it picks up water from the air.

f) Upgrade to larger rear dust shields using pie cut technique in attached photos.

g) When Bosch calipers are replaced by Brembo, the brake bias setting on the car must be coded. It’s a simple task that any BMW shop can do.

More details below:
—————————————-
I assume that your brakes are grey (and not blue which is the factory M Sport Brake Option). It’s likely that your brakes are Front 312mm x 24mm and Rear 300x20. A small number of cars came with Front 330x24 which take the same pads as 312x24. To the eye the calipers appear the same but they obviously take different sized rotors. So it’s important to actually measure at some point to confirm that you have 312mm and not 330mm.

REAR BRAKE UPGRADES
There are three rear brake calipers made for the F30:
345x24 Brembo 2-piston caliper
330x20 Bosch single piston caliper
300x20 Bosch single piston caliper

The only real consequence of having the smaller earlier 160mm rear e-brake is that the 330x20 rear brakes are not an upgrade option for you because I’ve never seen a rear 330x20 rotor with the smaller 160mm e-brake machined inside the hat. The 330x20 rotors all are made for 185mm e-brakes. That is disappointing because the used rear 330mm calipers are more plentiful and less costly than the 345mm calipers.

A pair of used 345mm Brembo calipers in good condition are typically $450-$550.

If you upgrade to rear 345mm brakes you will likely have to upgrade to larger rear dust shields as well. The shields would normally be expensive to install but mechanics have a work around of making a pie cut in the new shield to turn it into a simple bolt-on part. See attached photo.

If you decide to upgrade calipers, definitely take the opportunity to upgrade from rubber to stainless steel brake hoses. Since labor costs overlap. It eliminates mushy brake feel for a firmer brake pedal. I usually recommend StopTech, Turner or Goodridge (UK) Stainless lines. About $100-$150 for set of four lines. See photos for part numbers.

Note: Front brakes are always upgraded first because they do the majority of the work. No one would only upgrade the rear brakes.

I’ll post separately about front brake upgrade options. Hope this helps.

Wow! the level of detail you provide is out of this world. I cant thank you enough for this - this really helps me.

my VIN is k431310.

With the two options I'm guessing the first option is significantly cheaper.
Could you provide rough total price points for each option.

Also for the 2nd option I would need to purchase the blue calipers but just wondering if there is an OEM caliper so I don't need to buy 2nd hand ones for nearly £800.
https://www.autodoc.co.uk/abs/138666...BoC84UQAvD_BwE

The link above is something I've seen online which looks like the blue brakes but unsure if they are good at all or I should definitely go for 2nd hand BMW ones.
Ofcourse I want it to be cost effective but also I don't want to compromise on my brakes at the same time.


thanks for your help again.
Irfan

[neonovvy]

Originally Posted by johnung

Typical brake bleeding does not remove small air bubbles that stubbornly cling to inside walls. The BMW ISTA brake bleeding procedure must be followed. BMW shops are all familiar with this. Here’s an excellent video from FaRKle! on how it’s done.

Also since you upgraded from the all Bosch setup to one that contains a Brembo caliper, the brake bias code must be updated. It’s also a simple change that any BMW shop should be able to do.

Congratulations on a nice upgrade. You should really notice a difference.

I have to bleed it 3rd time, but now following ISTA procedure. I have one on my PC. I cannot find any codes to do this myself, I was searching for what should I code for 340/330 but only found MPerformance codes.

[irfant24]

Originally Posted by danb1979

260 isn't huge; more aggressive discs, pads and lines will work well for you in the first instance. My BMW E30 540i (Jap import) ran 290BHP and I ran stock E39 324mm/298mm brake calipers but with the ATE discs, ceramic pads, HEL braided lines and Motul brake fluid and the car stopped superbly; even with the tank of the 4.4 V8 up front!

But as for bigger brakes; easiest option is to go for the OEM blue Brembo fitted brakes that come on F3X cars already; you'll want the front blue Brembo's that fit the 370/380mm discs and the rear blue Brembo calipers that fit the 345mm discs

I have the 370/345mm brakes on my F31

Part numbers are here on RealOEM:

https://www.realoem.com/bmw/enUS/par...BMW-325d&mg=34

You need to ensure that the part says: "S2NHA=Yes"

As an example; there are many sets on eBay UK such as:

https://www.ebay.co.uk/itm/156020357...Bk9SR-T5hNP4Yw

But do your research when it comes to upgrading to these calipers as you'll need a new, correct size brake master cylinder too IIRC

Thank you so much for the insight on this.

are the ATE pads performance ones as I have researched that the Hawk 5.0 are street performance ones which seem good.
Also I have heard that ceramic pads do squeak a lot when cold - was this the same with your 540i and was it annoying?

thanks again!

[danb1979]

Originally Posted by irfant24

Thank you so much for the insight on this.

are the ATE pads performance ones as I have researched that the Hawk 5.0 are street performance ones which seem good.
Also I have heard that ceramic pads do squeak a lot when cold - was this the same with your 540i and was it annoying?

thanks again!

They're not full ceramic pads like super cars are, if that makes sense.

They're all about superb bite from cold and keeping the dust down to a minimum too & they work superbly when pushed as well...

As said I ran them on all my E39s (all 4 of them) with zero issues. I'm surrounded by rural B roads here in Lancashire and take my car(s) for a good blast regularly; not once have I had fading issues etc. Even when I've been stupid enough to take on the likes of Wrynose and Hardknott Passes in The Lakes etc

The Hawk pads are crap; not a fan at all. Lots of nose/squealing. Same with EBC pads; just never had good experiences with them and their bite is crap

The Ferodo DS2500 pads are superb, but they can be very dusty

TBH the ATE pads (or Ferodo's) with premium discs (ATE, OEM BMW - if you stick with blanks) will be more than sufficient for c260 brake as a starter.

That and decent lines/fluid will better the OEM brakes easily and 260 brake isn't huge; nor is the car

Save the £££ and more aggressive braking if you finally upgrade to the OEM blue Brembo calipers etc - running 370/345mm discs all round with those stoppers will be more than sufficient!

As said I run them with OEM BMW M Performance discs (grooved/dimpled) and OEM M Sport pads on my F31 and they're superb; I've never had a concern that they're not going to stop me...

In hindsight I wish I'd fitted the M3/M4 pads as I know now they're a good upgrade over stock; but it's not a regret, if that makes sense?

This are my brakes behind 405Ms




Wheels have been refurbed to Ferric Grey though now

[johnung]

Originally Posted by neonovvy

I have to bleed it 3rd time, but now following ISTA procedure. I have one on my PC. I cannot find any codes to do this myself, I was searching for what should I code for 340/330 but only found MPerformance codes.

I think the coding may be in E-sys if I remember correctly. I believe it’s the same number as the M Sport Brakes factory option. S2NH or S2NHA. I think the A gets tacked on at times to indicate models built for North American market, so the A may or may not be needed in coding.

I’ve read various arguments that there may be additional deeper level coding that may specific individual calipers. But I’ve also had two BMW techs say that this brake bias code is the only thing necessary.

Attached is the page from the BMW installation instructions for the M Performance Brake Kit that discusses coding.

[SD Convert]

Originally Posted by irfant24

I would like to upgrade my 320i brakes.

I currently have the base brakes and would like stronger brakes so I’m thinking about better pads/discs or even the m sport brakes.


What do you guys recommend? ( I don’t want to break my bank account lol)

I did a similar upgrade about 2 years ago. Here's the build link:
https://f30.bimmerpost.com/forums/sh....php?t=1747129

My cost to do this was about $2K, but it's likely to be higher now.

The parts list I used (185MM parking brake and 370/345 rotors) is in post 15.

Please pay careful attention to what John is posting. He's quite familiar with this work.

[irfant24]

Originally Posted by danb1979

They're not full ceramic pads like super cars are, if that makes sense.

They're all about superb bite from cold and keeping the dust down to a minimum too & they work superbly when pushed as well...

As said I ran them on all my E39s (all 4 of them) with zero issues. I'm surrounded by rural B roads here in Lancashire and take my car(s) for a good blast regularly; not once have I had fading issues etc. Even when I've been stupid enough to take on the likes of Wrynose and Hardknott Passes in The Lakes etc

The Hawk pads are crap; not a fan at all. Lots of nose/squealing. Same with EBC pads; just never had good experiences with them and their bite is crap

The Ferodo DS2500 pads are superb, but they can be very dusty

TBH the ATE pads (or Ferodo's) with premium discs (ATE, OEM BMW - if you stick with blanks) will be more than sufficient for c260 brake as a starter.

That and decent lines/fluid will better the OEM brakes easily and 260 brake isn't huge; nor is the car

Save the £££ and more aggressive braking if you finally upgrade to the OEM blue Brembo calipers etc - running 370/345mm discs all round with those stoppers will be more than sufficient!

As said I run them with OEM BMW M Performance discs (grooved/dimpled) and OEM M Sport pads on my F31 and they're superb; I've never had a concern that they're not going to stop me...

In hindsight I wish I'd fitted the M3/M4 pads as I know now they're a good upgrade over stock; but it's not a regret, if that makes sense?

This are my brakes behind 405Ms




Wheels have been refurbed to Ferric Grey though now

What a beauty!! - love your car.

So was looking into the ATE pads and discs and this is what I found - please do let me know if these are the same as the ones you were talking about.

https://www.autodoc.co.uk/ate/788264...BoC84UQAvD_BwE
https://www.autodoc.co.uk/ate/700268...BwE#brake-disc

I have also seen that brembo have a set of street performance ones too. what do you think?
https://www.brakingupgrade.co.uk/pro...hoCUTUQAvD_BwE

https://www.autodoc.co.uk/brembo/8714342

[neonovvy]

Originally Posted by johnung

I think the coding may be in E-sys if I remember correctly. I believe it’s the same number as the M Sport Brakes factory option. S2NH or S2NHA. I think the A gets tacked on at times to indicate models built for North American market, so the A may or may not be needed in coding.

I’ve read various arguments that there may be additional deeper level coding that may specific individual calipers. But I’ve also had two BMW techs say that this brake bias code is the only thing necessary.

Attached is the page from the BMW installation instructions for the M Performance Brake Kit that discusses coding.

I have seen many posts about coding S2NH, but I thought that it only is with 345 2 piston rear caliper. I ve seen on realoem that 340/330 are code S102A that is why I am a little bit confused. I think I will be able to code S2NH by myself

[johnung]

Originally Posted by neonovvy

I have seen many posts about coding S2NH, but I thought that it only is with 345 2 piston rear caliper. I ve seen on realoem that 340/330 are code S102A that is why I am a little bit confused. I think I will be able to code S2NH by myself

My understanding has always been that there are two brake bias settings. It’s like a front and rear braking ratio. In practice it’s when a front brake caliper is upgraded from a Bosch 312x24 or Bosch 330x24, to either of the Brembo front 340x30 or 370x30. No one would upgrade a rear to the Brembo 345x24 without upgrading the front to a Brembo caliper.

I got this from an experienced BMW dealer tech who installed my first brake upgrade (on the side) from F340/R330 to F340/R345. He told me that my car came with the S2NH code from the factory because I already had the Brembo 340’s on the front. Later when I upgraded my front calipers from 340’s to 370’s, I didn’t have to code either because again my car already had the S2NH brake bias code.

[danb1979]

Originally Posted by irfant24

What a beauty!! - love your car.

So was looking into the ATE pads and discs and this is what I found - please do let me know if these are the same as the ones you were talking about.

https://www.autodoc.co.uk/ate/788264...BoC84UQAvD_BwE
https://www.autodoc.co.uk/ate/700268...BwE#brake-disc

I have also seen that brembo have a set of street performance ones too. what do you think?
https://www.brakingupgrade.co.uk/pro...hoCUTUQAvD_BwE

https://www.autodoc.co.uk/brembo/8714342

Cheers; it's been a good project

The ATE discs & pads are right; just ensure they're the sizes you need by confirming the part numbers/specs on RealOEM

But ATE blank discs and their Ceramic pads all round will make for fantastic brakes

The Brembo HP2000s do get good reviews; not run them myself but know a few folk that have and they're a good fast road pad, but typical Brembo and very dusty!

Could be worth a punt - they'll work well with any decent brake discs like the ATEs etc

FYI those Brembo discs you've linked to are for the 340mm Brembo calipers, not your stock calipers

Edit**

Looking at RealOEM for your car; your front brake discs are 312mm by 24mm

So you'd need these ATE discs: https://www.autodoc.co.uk/car-parts/...pplier%5B%5D=3

And these ATE Ceramic pads: https://www.autodoc.co.uk/ate/7882648

Rear discs are 300mm by 20mm; you need these ATE discs: https://www.autodoc.co.uk/ate/7002680

Pads: https://www.autodoc.co.uk/ate/7882647

HEL brake lines: https://www.ebay.co.uk/itm/122991103...Bk9SR56juNn5Yw

I'd contact them to confirm they do the correct set for your car; but the brake lines IIRC are all the same for the F3X range

Motul brake fluid: https://www.amazon.co.uk/Motul-MTL10...17&sr=8-1&th=1

That lot will give you superb braking from the off and TBH you'll not need more than that...

Obviously the blue Brembo's give you the looks and all out solid braking too; but it's an expensive run to go for all 4 calipers, new 370/345mm discs and pads; lines and fluid on top and then fitting etc!