[bmw335ie90]

Anyone know the piston diameter on stock sport/m-sport e90 front brake calipers?

[drg007]

just installed 0n my 2011 Bmw 335D front brake rotor 370x30 with F80 caliper, plug n play

[edycol]

Originally Posted by bmw335ie90

Anyone know the piston diameter on stock sport/m-sport e90 front brake calipers?

What model? 57mm on both 328/335.
On performance brakes on 328/330 there are 6 pistons, not sure diameter of each.
Piston diameter is engraved on ATE pads.

[drg007]

do i buy the stainless brake lines for the F80 or the E90
since im using F80 caliper on E90 chassis

[bluewater328]

Originally Posted by drg007

do i buy the stainless brake lines for the F80 or the E90
since im using F80 caliper on E90 chassis

Still buy the e90 ones since it's the right length. The threading into the caliper is pretty universal. I have the ECS SS lines on mine.

[335d cypis]

Originally Posted by longhorn335

great info indeed. I'm this close to getting the kit. just waiting to see if I can get more clarification on the fitment of the rear brakes. Anybody knows for sure whether they fit or not?

Thats the kit right there:
http://www.flickr.com/photos/59241080@N03/7726998856/

Got adapters to use a full set if u need them write to me on ig: cholewabartosz or whatsapp +48606854294

[MontybM3]

Originally Posted by 335d cypis

Got adapters to use a full set if u need them write to me on ig: cholewabartosz or whatsapp +48606854294

I'm looking for a full set that can support me installing the F30 performance brake MOD on my 2014 E84 X1. Can you support this set-up?

[MontybM3]

Originally Posted by 335d cypis

Got adapters to use a full set if u need them write to me on ig: cholewabartosz or whatsapp +48606854294

I would like to give an shout out to 335d cypis. He has been very helpful in providing me the detailed, one on one information I needed to get this MOD going on my car.

[Seattlesquash]

Originally Posted by MontybM3

I would like to give an shout out to 335d cypis. He has been very helpful in providing me the detailed, one on one information I needed to get this MOD going on my car.

Agree, very solid guy!!! Thank you

[335d cypis]

Hi to all!!
last upgrade... all top materials + zinc coat !! all bolts 10.8 all made cnc
look at my company https://www.facebook.com/BSI-Upgrades-110017394958636
also ig:cholewabartosz.

[rbryantaz]

Originally Posted by drg007

do i buy the stainless brake lines for the F80 or the E90
since im using F80 caliper on E90 chassis

I recommend buying the ECS or Turner exact fit lines. The stoptech and normal ECS ones don't really fit correctly IMO. They just use a washer instead of locking into the brackets like stock ones do. While it probably wouldn't happen nothing is really stopping them from turning and loosening in the brackets.

I returned the stoptech lines and got the ECS exact fit ones! It is only $20-30 more IIRC so I don't see the point of getting the ones that don't fit like stock.

The exact fit lines from ECS are nice. I would have preferred them to be black but that is a minor thing...

[BSM n54iS]

I've had Stoptech ss lines on my car for years now no issues, never heard of them not fitting before

[rbryantaz]

Originally Posted by BdSM n54iS

I've had Stoptech ss lines on my car for years now no issues, never heard of them not fitting before

The stock lines have a notch in them so they fit the brackets. They are held in by the spring clip so a round fitting with no notches on the front could turn and loosen.

The stoptech lines are round and just have a washer on one side because it uses a generic fitting. The spring clip doesn't really fully tighten so the line isn't as secure. I am sure it works but it just isn't as nice as the exact fit ones IMO.

[CheddyMar]

Looks so sick!

[335i54n]

My impressions so far of the 370/345 (e60 rotor) bbk

its a decent upgrade, main thing is fixed calipers. so before the rear pad would overheat 1st and cause crazy vibrations, so i tried just the rear 1st which added another 20% time before the front would cook and vibrate also. so with full bbk i never get any vibration under braking. m3 master is a must with full bbk otherwise it felt worst and had more travel than stock brakes.

its a donkey size caliper setup but pad surface area is small so pad quality will play a big part if tracking and because of its donkey design, it stick out a lot from the hub so verify wheel fitment.

370mm pad are actually less aggressive (they suck) than the 340mm but all rear pad compound is same as 370mm front compound from my research.

running srf and even still getting a little weeping at bleeder threads, next is TI shims, more brake ducting and better pads.

good value for full bbk BUT in hindsight would I have paid more to get more, Yeah

[edycol]

Originally Posted by 335i54n

My impressions so far of the 370/345 (e60 rotor) bbk

its a decent upgrade, main thing is fixed calipers. so before the rear pad would overheat 1st and cause crazy vibrations, so i tried just the rear 1st which added another 20% time before the front would cook and vibrate also. so with full bbk i never get any vibration under braking. m3 master is a must with full bbk otherwise it felt worst and had more travel than stock brakes.

its a donkey size caliper setup but pad surface area is small so pad quality will play a big part if tracking and because of its donkey design, it stick out a lot from the hub so verify wheel fitment.

370mm pad are actually less aggressive (they suck) than the 340mm but all rear pad compound is same as 370mm front compound from my research.

running srf and even still getting a little weeping at bleeder threads, next is TI shims, more brake ducting and better pads.

good value for full bbk BUT in hindsight would I have paid more to get more, Yeah

There are 3 different pad compounds:

1. Base for North American market. No dust, crappy feel.
2. S2NHA: Euro version. That is one you want. Aggressive feel. Dust comes complimentary.
3. P337: 370mm pad From my research, same compound as Base.

Since all pads are same shape and size, S2NHA is a must for performance upgrades.

[gianttcr]

Is there a clear reason no one has retro-fitted the complete F3x rear corner? I don't see an issue, unless spline count is different...and a good deal of labor. This is the way I'm going on my 135i, after previously mounting the E9x rear hub mod, in order to get some tires and wheels worth a d*%n.

[GnomeChild]

Whew... last time I was in this thread was 2018 and I'm basically asking the same questions... somehow I know less about this BBK setup than I did back then. Has there been any developments or new parts released by BMW on the newest generations of cars that would make my dreams a reality?

Originally Posted by GnomeChild

Seriously reconsidering these as an option for BBK
Anyone know if these will clear Stock M-Sports (Style 193)?

Also, I will be going full M3 Suspension in the rear for LSD and upgraded axles; someone mentioned earlier in the thread that Rear M-Performance are direct bolt on to M3 knuckle; can anyone vouch for that?
That way I’d have even more incentive to keep the M3 rear knuckles when I drop the subframe instead of swapping over my 335i knuckles/brakes. I’d save me the hassle of pounding half-shafts

[rbryantaz]

Originally Posted by GnomeChild

Whew... last time I was in this thread was 2018 and I'm basically asking the same questions... somehow I know less about this BBK setup than I did back then. Has there been any developments or new parts released by BMW on the newest generations of cars that would make my dreams a reality?

Here is the info that I gathered for the F80 swap which is different in the front than the F30 swap... I believe that the F30 is an easier swap with the 335i front spindles and F80 needs a true F80 spindle. (of course using an F30 spindle is also possible with the F30 swap but it can work with the 335 spindle). If using e90 M3 front shocks then I think the newer spindle is needed for for either F30 or F80 because of different caliper mounting points compared to the e90 M3.

The calipers are different between the F30 and F80 due to the mounting offsets. So to go true F80 it would require a front spindle swap. I believe the rear calipers are the same and just need a washer between them and the e90 M3 rear spindle. This does require the e90 M3 rear spindle or you would need offset bushings to run the 335 version.

https://www.m3post.com/forums/showthread.php?t=1713861
(and the link to the all in one writeup from that thread: https://www.tdott.me/2020/04/project...on-e92-m3.html)

Another good bit of info:
https://www.turnermotorsport.com/t-b...ke-Differences

Make sure to swap out the master cylinder from 335i to M3 aswell.

-Rich

[GnomeChild]

Originally Posted by rbryantaz

Here is the info that I gathered for the F80 swap which is different in the front than the F30 swap... I believe that the F30 is an easier swap with the 335i front spindles and F80 needs a true F80 spindle. (of course using an F30 spindle is also possible with the F30 swap but it can work with the 335 spindle). If using e90 M3 front shocks then I think the newer spindle is needed for for either F30 or F80 because of different caliper mounting points compared to the e90 M3. The calipers are different between the F30 and F80 due to the mounting offsets. So to go true F80 it would require a front spindle swap.

I will be using 335i front shocks/tubes/spindles. While the F80 spindles sound like they may also consequentially offer increased handling performance alone, I will probably be sticking to the F30 setup (if even possible with Style 193s) due to ease of installation and your links reporting that a 19" wheel is mandatory for the 6-Pot F80 brakes. It is mostly to fit the blingy Blue calipers, just so happens to be a performance upgrade even with the smaller 4-Pot F30 brakes; best of both worlds

I believe the rear calipers are the same and just need a washer between them and the e90 M3 rear spindle. This does require the e90 M3 rear spindle or you would need offset bushings to run the 335 version.

I have rear M3 knuckles sitting on a K frame for LSD swap. I was going to replace them with my 335i knuckles to retain my stock 335i brakes but if this upgrade is possible then I may get use out of the M3 spindles. I believe feuer reported back then that there were no rotor options available for the Rear F30 brakes on M3 knuckles. Has that changed in the span of 5 years? If it has that would be amazing considering he also reported Rear F30 brakes to be effectively plug-and-play on the rear M3 knuckles

Make sure to swap out the master cylinder from 335i to M3 aswell

noted and thank you

[CalvinNismo]

F8x 370mm rears work with the E9x M3 knuckles and a few washers/spacers.

https://www.m3post.com/forums/showthread.php?t=1713861

Edit: Grammar.