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      01-27-2022, 07:30 PM   #23
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Quote:
Originally Posted by Boostedphil698 View Post
Would have been easier to just bolt on the M Performance BBK designed for our cars. The kit uses the same calipers as the F8X cars. Just my 2 cents.
The m performance kit is the same as m3/m4 with different color calipers. What belong has done is had adapters made to give you that last 10mm of space to fit factory M3 380 rotors. I want to do the same, but I have the smaller hand brake.

I've been casually looking for a way to upgrade the rear to a larger one if possible.
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      01-27-2022, 08:13 PM   #24
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Quote:
Originally Posted by sqwinny View Post
Quote:
Originally Posted by Boostedphil698 View Post
Would have been easier to just bolt on the M Performance BBK designed for our cars. The kit uses the same calipers as the F8X cars. Just my 2 cents.
The m performance kit is the same as m3/m4 with different color calipers. What belong has done is had adapters made to give you that last 10mm of space to fit factory M3 380 rotors. I want to do the same, but I have the smaller hand brake.

I've been casually looking for a way to upgrade the rear to a larger one if possible.
I just don't understand the point for an extra 10mm but to each their own.
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      01-27-2022, 09:12 PM   #25
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Quote:
Originally Posted by Boostedphil698 View Post
Quote:
Originally Posted by "sqwinny;28520407"
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Originally Posted by "Boostedphil698;28517965"
Would have been easier to just bolt on the M Performance BBK designed for our cars. The kit uses the same calipers as the F8X cars. Just my 2 cents.
The m performance kit is the same as m3/m4 with different color calipers. What belong has done is had adapters made to give you that last 10mm of space to fit factory M3 380 rotors. I want to do the same, but I have the smaller hand brake.

I've been casually looking for a way to upgrade the rear to a larger one if possible.
I just don't understand the point for an extra 10mm but to each their own.
More or it's a "street cred thing" than logic. I'm also kind of OCD to have matching or really close sized rotors front and back. "Bro I got 10mm more rotor."

Performance wise anything larger than the 340mm in the front is moot. If you are getting brake fade with those, it's a racing setup.

370 front, 345 rear. I just want it to be close to equal.
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      01-28-2022, 07:12 AM   #26
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Quote:
Originally Posted by sqwinny View Post
More or it's a "street cred thing" than logic. I'm also kind of OCD to have matching or really close sized rotors front and back. "Bro I got 10mm more rotor."

Performance wise anything larger than the 340mm in the front is moot. If you are getting brake fade with those, it's a racing setup.

370 front, 345 rear. I just want it to be close to equal.
I understand your point, I upgraded from the 340 front and 330 single piston rears out of OCD but I don't think any car has equal front and rear unless you were gonna buy a Ferrari and even then those cars aren't 100% exact.
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      01-28-2022, 08:11 AM   #27
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Equal in diameter is pure looks, brake bias has more to do with piston volume, master cylinder proportioning and should be set up based on how you use your car, weight transfer % during heavy braking etc. Anything else is for looks not performance.

Quote:
Originally Posted by sqwinny View Post
More or it's a "street cred thing" than logic. I'm also kind of OCD to have matching or really close sized rotors front and back. "Bro I got 10mm more rotor."

Performance wise anything larger than the 340mm in the front is moot. If you are getting brake fade with those, it's a racing setup.

370 front, 345 rear. I just want it to be close to equal.
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      01-28-2022, 12:55 PM   #28
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Quote:
Originally Posted by Boostedphil698 View Post
Quote:
Originally Posted by "sqwinny;28520762"
More or it's a "street cred thing" than logic. I'm also kind of OCD to have matching or really close sized rotors front and back. "Bro I got 10mm more rotor."

Performance wise anything larger than the 340mm in the front is moot. If you are getting brake fade with those, it's a racing setup.

370 front, 345 rear. I just want it to be close to equal.
I understand your point, I upgraded from the 340 front and 330 single piston rears out of OCD but I don't think any car has equal front and rear unless you were gonna buy a Ferrari and even then those cars aren't 100% exact.
Of course. For performance, my argument still stands. If you are able to get brake fade with the factory 340mm front brembos + race pads, you need a racing big brake kit, not 370/380mm rotors.

We drive 3600 lbs bmws with heat ac power steering and leather not stripped race cars 😂
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      01-29-2022, 07:42 AM   #29
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Originally Posted by Logicoeur View Post
Well it's very likely because 10mm is not a big difference for this car. The same calipers bolt on, without any additional bracket (that also requires shaving the upright), with readily available 370mm rotors. It's almost a no brainer. If someone is really that interested in their brakes they will go after a GT kit, Ap Racing, etc.

What are you talking about... shaving the upright? clearly dont have a fking clue what your talking about

380mm ///M are alot better and nicer looking then the crap 370ers... or 340ers..
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      01-29-2022, 07:43 AM   #30
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Originally Posted by Boostedphil698 View Post
I just don't understand the point for an extra 10mm but to each their own.
Ask your wife
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      01-29-2022, 07:44 AM   #31
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Quote:
Originally Posted by Belong View Post
Quote:
Originally Posted by Logicoeur View Post
Well it's very likely because 10mm is not a big difference for this car. The same calipers bolt on, without any additional bracket (that also requires shaving the upright), with readily available 370mm rotors. It's almost a no brainer. If someone is really that interested in their brakes they will go after a GT kit, Ap Racing, etc.

What are you talking about... shaving the upright? clearly dont have a fking clue what your talking about

380mm ///M are alot better and nicer looking then the crap 370ers... or 340ers..
Well that's what you told me when I asked, and you even showed me the photos of your upright. Albeit it's just a little shaving for the new bracket, it's still extra work required for us to mount the F80 rotors.
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      01-29-2022, 07:45 AM   #32
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Originally Posted by MikeeM View Post
Hi, I have the front brakes from the M4 at home and I'm wondering if it is worth for me to put it on the F32 430d. How much would cost the front brackets stand alone?
Thanks

Send me Pm, or instagram: EstorilV10

If you have the stuff laying around , i would def do the upgrade...
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      01-29-2022, 07:46 AM   #33
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Quote:
Originally Posted by Logicoeur View Post
Well that's what you told me when I asked, and you even showed me the photos of your upright. Albeit it's just a little shaving for the new bracket, it's still extra work required for us to mount the F80 rotors.

now your talking about the rears...
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      01-29-2022, 07:54 AM   #34
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Quote:
Originally Posted by Belong View Post
Quote:
Originally Posted by Logicoeur View Post
Well that's what you told me when I asked, and you even showed me the photos of your upright. Albeit it's just a little shaving for the new bracket, it's still extra work required for us to mount the F80 rotors.

now your talking about the rears...
Front/rear not sure that part matters, still need to shave the upright. Be that as it may, I don't think going 380 in the front with this bracket, and keeping the 2piston Brembo with our 345mm rotor would be wise. It sounds like that setup would mess up brake bias and make the car nose dive even farther under hard braking.
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      01-29-2022, 08:16 AM   #35
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Quote:
Originally Posted by Logicoeur View Post
Front/rear not sure that part matters, still need to shave the upright. Be that as it may, I don't think going 380 in the front with this bracket, and keeping the 2piston Brembo with our 345mm rotor would be wise. It sounds like that setup would mess up brake bias and make the car nose dive even farther under hard braking.
sure bro... you ll end up doing endos...
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      07-22-2022, 12:37 PM   #36
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Exclamation Hello

Quote:
Originally Posted by Belong View Post
Hi guys

New to the forum here...

Im selling brackets for the front and the rear for the F3* platform to succesfully use the M3/M4 380mm front discs and rear 370ers discs on the f3* platform.

I have adapters for the 340mm BRembo calipers to 380 m3/m4
as well as adapters for the 370mm calipers to 380 m3/m4 discs

and for the rears to use the 370 mm M3/M4 rears discs


Rears will only work if you have the larger 18.5cm handbrake.








ill try to update this post soon with some pics , if there are people interested..






Im intresting to buy those adapters, do u have instagram or contact information,thank you.
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      07-22-2022, 12:42 PM   #37
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Originally Posted by Belong View Post
Send me Pm, or instagram: EstorilV10

If you have the stuff laying around , i would def do the upgrade...
I just text u on instagram
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      07-24-2022, 04:41 AM   #38
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great mann
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      07-27-2022, 12:08 PM   #39
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sent you a PM, I dont have instagram

Do you ship to the U.S.?
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      07-27-2022, 12:50 PM   #40
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Quote:
Originally Posted by Logicoeur View Post
Quote:
Originally Posted by Belong View Post
Quote:
Originally Posted by Logicoeur View Post
Well that's what you told me when I asked, and you even showed me the photos of your upright. Albeit it's just a little shaving for the new bracket, it's still extra work required for us to mount the F80 rotors.

now your talking about the rears...
Front/rear not sure that part matters, still need to shave the upright. Be that as it may, I don't think going 380 in the front with this bracket, and keeping the 2piston Brembo with our 345mm rotor would be wise. It sounds like that setup would mess up brake bias and make the car nose dive even farther under hard braking.
I know this is an older post...
Just wanted to comment that brake bias is based on the front and rear calipers used. So if this is just a cosmetic change to run 380mm rotors in front with calipers that were originally 340 or 370, then brake bias setting/coding in eSys would not change.

It's similar to what BMW already does with front 340 and 370 brakes. The caliper pistons and brake pads are identical. They don't use brackets but instead they stretch the casting on the larger caliper by 15mm to accommodate the 30mm larger diameter rotor.
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      07-27-2022, 12:59 PM   #41
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Quote:
Originally Posted by johnung View Post
Quote:
Originally Posted by Logicoeur View Post
Quote:
Originally Posted by Belong View Post
Quote:
Originally Posted by Logicoeur View Post
Well that's what you told me when I asked, and you even showed me the photos of your upright. Albeit it's just a little shaving for the new bracket, it's still extra work required for us to mount the F80 rotors.

now your talking about the rears...
Front/rear not sure that part matters, still need to shave the upright. Be that as it may, I don't think going 380 in the front with this bracket, and keeping the 2piston Brembo with our 345mm rotor would be wise. It sounds like that setup would mess up brake bias and make the car nose dive even farther under hard braking.
I know this is an older post...
Just wanted to comment that brake bias is based on the front and rear calipers used. So if this is just a cosmetic change to run 380mm rotors in front with calipers that were originally 340 or 370, then brake bias setting/coding in eSys would not change.

It's similar to what BMW already does with front 340 and 370 brakes. The caliper pistons and brake pads are identical. They don't use brackets but instead they stretch the casting on the larger caliper by 15mm to accommodate the 30mm larger diameter rotor.
Physics, brake bias calculators and the equations behind them all show that rotor diameter indeed affects brake bias. Rotor size dictates the lever arm and torque a caliper can apply under braking. It's not just the piston area compared to the MC piston surface area.

While we are on the topic though, I've been doing some research for custom BBKs (17z, 18z, GT350 brembo calipers, brembo Gt6, etc) on the f30 and comparing brake bias to the popular setups we have (340/330, 340/345 which I have, 370/345, this one from the f80, and AP racing). I should make a thread about it at some point. Pad friction is important here too. So I believe that this f80 mod should be fine if the rear pad friction is high enough to compensate for the additional torque from the front.
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      07-27-2022, 01:06 PM   #42
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Quote:
Originally Posted by Logicoeur View Post
Quote:
Originally Posted by johnung View Post
Quote:
Originally Posted by Logicoeur View Post
Quote:
Originally Posted by Belong View Post
Quote:
Originally Posted by Logicoeur View Post
Well that's what you told me when I asked, and you even showed me the photos of your upright. Albeit it's just a little shaving for the new bracket, it's still extra work required for us to mount the F80 rotors.

now your talking about the rears...
Front/rear not sure that part matters, still need to shave the upright. Be that as it may, I don't think going 380 in the front with this bracket, and keeping the 2piston Brembo with our 345mm rotor would be wise. It sounds like that setup would mess up brake bias and make the car nose dive even farther under hard braking.
I know this is an older post...
Just wanted to comment that brake bias is based on the front and rear calipers used. So if this is just a cosmetic change to run 380mm rotors in front with calipers that were originally 340 or 370, then brake bias setting/coding in eSys would not change.

It's similar to what BMW already does with front 340 and 370 brakes. The caliper pistons and brake pads are identical. They don't use brackets but instead they stretch the casting on the larger caliper by 15mm to accommodate the 30mm larger diameter rotor.
Physics, brake bias calculators and the equations behind them all show that rotor diameter indeed affects brake bias. Rotor size dictates the lever arm and torque a caliper can apply under braking. It's not just the piston area compared to the MC piston surface area.
I understand what you're saying about the theory. My point was that in practicality, mounting the 380x30 front rotor using brackets with a 340 or 370 caliper would not cause an eSys coding change to be necessary.

Update: Unless the car originally had front single piston calipers over 330x24 or 312x24 rotors and was just now going to the Brembo 340 or 370 calipers, whether with brackets or not. That mod does require a brake bias coding change using eSys.
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      07-27-2022, 01:11 PM   #43
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Quote:
Originally Posted by johnung View Post
Quote:
Originally Posted by Logicoeur View Post
Quote:
Originally Posted by johnung View Post
Quote:
Originally Posted by Logicoeur View Post
Quote:
Originally Posted by Belong View Post
Quote:
Originally Posted by Logicoeur View Post
Well that's what you told me when I asked, and you even showed me the photos of your upright. Albeit it's just a little shaving for the new bracket, it's still extra work required for us to mount the F80 rotors.

now your talking about the rears...
Front/rear not sure that part matters, still need to shave the upright. Be that as it may, I don't think going 380 in the front with this bracket, and keeping the 2piston Brembo with our 345mm rotor would be wise. It sounds like that setup would mess up brake bias and make the car nose dive even farther under hard braking.
I know this is an older post...
Just wanted to comment that brake bias is based on the front and rear calipers used. So if this is just a cosmetic change to run 380mm rotors in front with calipers that were originally 340 or 370, then brake bias setting/coding in eSys would not change.

It's similar to what BMW already does with front 340 and 370 brakes. The caliper pistons and brake pads are identical. They don't use brackets but instead they stretch the casting on the larger caliper by 15mm to accommodate the 30mm larger diameter rotor.
Physics, brake bias calculators and the equations behind them all show that rotor diameter indeed affects brake bias. Rotor size dictates the lever arm and torque a caliper can apply under braking. It's not just the piston area compared to the MC piston surface area.
I understand what you're saying about the theory. My point was that in practicality, mounting the 380x30 front rotor using brackets with a 340 or 370 caliper would not cause an eSys coding change to be necessary.
Oh got it, yes it wouldn't require a coding change because there wouldn't be an existing entry in the DME for this setup.
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      09-08-2022, 12:56 PM   #44
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I’m interested in buying these. I sent you a Insta DM.
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