[andrey_gta]

Originally Posted by justpete

Thanks, those are the threads I was thinking of. Still not absolutely following if
a) the 135i rear caliper bolts up to the LCI e90 rear wheel carrier,
b) there's a 324x22 rotor that fits the LCI e90 hub with the correct 160mm parking brake drum diameter, and
c) has the correct offset so that it can fit in the caliper with or without a bit of a spacer. Looks like all the threads are discussing e91/e93/e82, etc. but not LCI e90. Then again I'm an idiot so could just be completely misunderstanding the whole thing. :/

No problem, it is a lot to keep track of
A & B is correct 135i rear caliper bolts up and does not need spacers for the expensive 324x22 Perf rotor. You can get away with using 328i rear oem 300x20 rotor too.
Washers/spacers needed to use other cheaper rotors.
C e9x all have the same bits & hubs if they all are the same vintage.

[justpete]

Originally Posted by andrey_gta

No problem, it is a lot to keep track of
A & B is correct 135i rear caliper bolts up and does not need spacers for the expensive 324x22 Perf rotor. You can get away with using 328i rear oem 300x20 rotor too.
Washers/spacers needed to use other cheaper rotors.
C e9x all have the same bits & hubs if they all are the same vintage.

Thanks, big help. Still not connecting with what the expensive Performance rotor is though. 324x22 is right but not finding the one with the correct hat offset and drum diameter. Sorry for all the trouble.

[andrey_gta]

Originally Posted by justpete

Thanks, big help. Still not connecting with what the expensive Performance rotor is though. 324x22 is right but not finding the one with the correct hat offset and drum diameter. Sorry for all the trouble.

No problem.

Its this one for e9x hub and 130i hatchbacks
130i, e91 & e9x xi Performance rears 324x24 - 34216795755
http://www.e90post.com/forums/showthread.php?t=576647

The blank face version of this is no longer in production and it was under part number: 34216787931 and Zimmermann 150.3477.20

[justpete]

Originally Posted by andrey_gta

No problem.

Its this one for e9x hub and 130i hatchbacks
130i, e91 & e9x xi Performance rears 324x24 - 34216795755
http://www.e90post.com/forums/showthread.php?t=576647

The blank face version of this is no longer in production and it was under part number: 34216787931 and Zimmermann 150.3477.20

OK, that's the one e90pilot found as mentioned in that thread. Turner comes up with it and says it's good for the e90 chassis. And via RealOEM it is indeed listed as working on the 2011 LCI e90 328i. Very cool, didn't make the connection the first time through the thread. Thanks a million andrey_gta, you rock! And have the patience of Job. So now I just gotta find a set of stock rear 135i calipers...

[justpete]

Originally Posted by andrey_gta

No problem.

Its this one for e9x hub and 130i hatchbacks
130i, e91 & e9x xi Performance rears 324x24 - 34216795755
http://www.e90post.com/forums/showthread.php?t=576647

The blank face version of this is no longer in production and it was under part number: 34216787931 and Zimmermann 150.3477.20

Just checked RealOEM for the 2011 e90 328xi and the parking brake diameter is given as 185mm rather than the 160mm found on a 328i of the same MY. So this rotor precludes the use of the e-brake on my car. Pretty much a problem right there...

[justpete]

Originally Posted by andrey_gta

No problem.

Its this one for e9x hub and 130i hatchbacks
130i, e91 & e9x xi Performance rears 324x24 - 34216795755
http://www.e90post.com/forums/showthread.php?t=576647

The blank face version of this is no longer in production and it was under part number: 34216787931 and Zimmermann 150.3477.20

FWIW, just verified this rotor is also for the 330i EUR which also has 185mm parking brake so can't be used on an LCI 328i.

[justpete]

Originally Posted by andrey_gta

No problem.

Its this one for e9x hub and 130i hatchbacks
130i, e91 & e9x xi Performance rears 324x24 - 34216795755
http://www.e90post.com/forums/showthread.php?t=576647

The blank face version of this is no longer in production and it was under part number: 34216787931 and Zimmermann 150.3477.20

Finally found this thread - http://www.e90post.com/forums/showth...0#post10703510 and forwarded it to the shop. The car chief is an artist with a welder so either of the solutions presented in the thread would be pretty much trivial, I think.

Now for the final phase, I need to find a floating rotor version of this 330i rotor. Not holding my breath...

[andrey_gta]

Originally Posted by justpete

Finally found this thread - http://www.e90post.com/forums/showth...0#post10703510 and forwarded it to the shop. The car chief is an artist with a welder so either of the solutions presented in the thread would be pretty much trivial, I think.

Now for the final phase, I need to find a floating rotor version of this 330i rotor. Not holding my breath...

That is the cheapest way to make handbrake work. The only way to avoid that is to just use the stock small 328i rear rotors. I haven't found a rotor that will retain 165mm handbrake.

The 130i/e91 rotor in Floating rotor is only possible with the CSL e46 rear rotor. M3 e46 CSL rears 328x20 282303304 with 183mm handbrake and a 5 mm spacer to center the caliper.

Similar to the 135i front rotor with aluminum hat is this F10 Rear Rotor 330x20 - 34216775287 it can fit the 135i caliper with a 1mm washer as a caliper spacer.

[justpete]

Originally Posted by andrey_gta

That is the cheapest way to make handbrake work. The only way to avoid that is to just use the stock small 328i rear rotors. I haven't found a rotor that will retain 165mm handbrake.

The 130i/e91 rotor in Floating rotor is only possible with the CSL e46 rear rotor. M3 e46 CSL rears 328x20 282303304 with 183mm handbrake and a 5 mm spacer to center the caliper.

Similar to the 135i front rotor with aluminum hat is this F10 Rear Rotor 330x20 - 34216775287 it can fit the 135i caliper with a 1mm washer as a caliper spacer.

So the 34216795755 rotor is a solid one piece design then, but drilled rather than dimpled as the 330i rear rotor is, I think (can't remember the last time I saw one).

[edit]
So the CSL e46 M3 floating rotor won't work with the LCI e90 328i wheel carrier and hub? Or am I misunderstanding and it requires changing at least the hub to the e91 part?

Geez, I need to learn to read...
[/edit]

The F10 rotor might be a decent alternative. Looks like it's the same sort of design as the Z4 rotor that has been discussed here many times. Which reminds me, I wonder if the Z4 front rotor is equivalent to the 135i front rotor.

Oops, never mind. That was the Z4 35is rotor and it's a swap in for the 335i rotor, not the 135i rotor per: http://www.e90post.com/forums/showthread.php?t=857252 It'd be handy to have solid rotors front and rear with this type of aluminum hat, the F10 rear and something else that might work up front.

I already checked with Zeckhausen and they tell me ST hasn't put together an Aerorotor replacement kit for the 135i so that leaves only RB but they've not done anything for the 330i/328i rear brake.

Wondering if the F10 rotor and 135i rear caliper is a weight loss or gain over the 328i OE rear brake...

[justpete]

Comparing the weight of the stock rear brakes with that of the 135i rear caliper plus F10 rotor indicates the stock weight is less by about 300g without pads.

So the weight difference is negligible but the brake torque should be increased assuming the piston diameter of the 135i rear caliper is the same size as that of the stock caliper. No idea how to find out though. And if it's the same and the torque is increased does this improve bias by bringing the rear up to ratio with the 135i front?

[WarrenRB]

Originally Posted by justpete

Pretty sure this was discussed some time back but can't find it, search-fu sucks, sorry for bringing it up again.

It'd be a decent setup with floating lightweight rotors and fixed calipers running XP10 pads, I think. It's the floating rotors I'd like to get changed over to and it doesn't really matter if the e-brake works or not although it won't pass safety inspection without it.

I tried to get RacingBrake to come up with a solution for the rear brakes but they passed, for any amount of money apparently. Not seeing any good quality solutions out there but am asking PowerBrake if they can do it or have something they can put together to meet the requirements.

If anybody can help with other potential sources that'd be great. TIA.

Hello,

RacingBrake is pleased to be a sponsor of this forum.

RB rear two piece rotor in stock size (322x22mm) are available:
http://www.racingbrake.com/Two-piece...008-p/2167.htm

As noted in the disclaimer, for such a small dia rotor with drum brake equipped, it's impossible to make a two piece rotor with a friction surface wide enough to fit OE pad. However we include a compatible rear pad (same as for EVO rear), or you can trim the OE pad to fit like our E46 M3 rear.

2-pot 350mm rear BBK is also available
http://www.racingbrake.com/Big-Brake...ar-p/2395k.htm

With matching 4-pot front 380mm brake kit, this set up has helped Scott's team (SCTS Racing) won various championship with their 135i.

http://www.bimmerfest.com/forums/sho...56&postcount=5


Warren-RB

[WarrenRB]

This two piece rotor combo are made to fit OE calipers

http://www.racingbrake.com/RB-Iron-R...bmw-irk-05.htm

Front: 350x28 (vs. OE 338x28), required caliper spacers are included for a bolt on installation to OE 6 pot.

Rear: 322x22 (Same as OE), direct bolt on to OE 2-pot calipers.

If you already rebuilt OE calipers with RB components, further installation of these two piece rotors should give you enough brake power you need to win at very affordable pricing.

[justpete]

Originally Posted by rb4-bmw

Hello,

RacingBrake is pleased to be a sponsor of this forum.

RB rear two piece rotor in stock size (322x22mm) are available:
http://www.racingbrake.com/Two-piece...008-p/2167.htm

As noted in the disclaimer, for such a small dia rotor with drum brake equipped, it's impossible to make a two piece rotor with a friction surface wide enough to fit OE pad. However we include a compatible rear pad (same as for EVO rear), or you can trim the OE pad to fit like our E46 M3 rear.

2-pot 350mm rear BBK is also available
http://www.racingbrake.com/Big-Brake...ar-p/2395k.htm

With matching 4-pot front 380mm brake kit, this set up has helped Scott's team (SCTS Racing) won various championship with their 135i.

http://www.bimmerfest.com/forums/sho...56&postcount=5


Warren-RB

Thanks Warren, I'd looked at that but it turns out the hat designed for the 135i won't work without extensive replacement of the rear drivetrain components.

I asked RB last year if they could make a floating rotor to fit the LCI e90 328i rear nub and especially the parking brake diameter and fit a rotor that would work with the bolt-on 135i rear caliper but was referred instead to your BBK. I even offered to pay the NRE but received no response on that.

I also use Carbotech XP10 pads so I'd have to change over to something else which I'd be willing to do if the rotors existed for all four corners. I bought a set of front 135i floating rotors from RB but they're still in the original unopened box in the attic while I search for a rear floating rotor solution but it appears there isn't one. Bummer.

Thanks for commenting on the subject though.

[justpete]

Originally Posted by rb4-bmw

This two piece rotor combo are made to fit OE calipers

http://www.racingbrake.com/RB-Iron-R...bmw-irk-05.htm

Front: 350x28 (vs. OE 338x28), required caliper spacers are included for a bolt on installation to OE 6 pot.

Rear: 322x22 (Same as OE), direct bolt on to OE 2-pot calipers.

If you already rebuilt OE calipers with RB components, further installation of these two piece rotors should give you enough brake power you need to win at very affordable pricing.

Warren,

If RB was willing to entertain the idea of using a hat with a 160mm drum and correct offset for the LCI 328i e90 which is the same offset for the 330i and 130i (I think) there's likely enough interest for an initial run. I believe this was discussed on the RB boards in the past but without resolution. No solution exists from any supplier so it might be worth considering. If the hat could be small enough in diameter for the rotor to have enough annulus for stock pads that'd be even better but probably not likely.

[justpete]

Originally Posted by andrey_gta

M3 e46 CSL rears 328x20 282303304 with 183mm handbrake and a 5 mm spacer to center the caliper.

The 282303304 p/n must be incomplete, doesn't come up as valid anywhere.

[justpete]

Originally Posted by andrey_gta

That is the cheapest way to make handbrake work. The only way to avoid that is to just use the stock small 328i rear rotors. I haven't found a rotor that will retain 165mm handbrake.

The 130i/e91 rotor in Floating rotor is only possible with the CSL e46 rear rotor. M3 e46 CSL rears 328x20 282303304 with 183mm handbrake and a 5 mm spacer to center the caliper.

Similar to the 135i front rotor with aluminum hat is this F10 Rear Rotor 330x20 - 34216775287 it can fit the 135i caliper with a 1mm washer as a caliper spacer.

Found this: http://www.realoem.com/bmw/enUS/part...&q=34212282303

Same thing? It's the left side rotor, right side is this: http://www.realoem.com/bmw/enUS/part...&q=34212282304

Doesn't look like a floating rotor but this site -- http://www.bmwpartsweb.com/Part-Numb..._E095124A.aspx -- describes it as such so must be the right part number then.

Confused as to whether the 130i/e91 fitment for this rotor is such that it will work on the LCI e90 328i hub as opposed to the e91 hub.

[justpete]

FWIW the e46 M3 CSL rotor is about 1.375 lbs lighter than either the 130i/xi Perf Brake or the F10 rotor. So definitely the best option if usable with only a 5mm spacer which would be easily fabricated. And they're only about forty bucks more apiece than the F10 rotors.

[justpete]

Originally Posted by rb4-bmw

This two piece rotor combo are made to fit OE calipers

http://www.racingbrake.com/RB-Iron-R...bmw-irk-05.htm

Front: 350x28 (vs. OE 338x28), required caliper spacers are included for a bolt on installation to OE 6 pot.

Rear: 322x22 (Same as OE), direct bolt on to OE 2-pot calipers.

If you already rebuilt OE calipers with RB components, further installation of these two piece rotors should give you enough brake power you need to win at very affordable pricing.

Looking at using the RB 135i front rotors I already have with e46 M3 CSL rear rotors, both with 135i calipers. Will the RB rotors be ok using Pagid RS29 pads?

[andrey_gta]

I need to back track through your posts to confirm Check back Sunday evening

[andrey_gta]

Originally Posted by justpete

So the 34216795755 rotor is a solid one piece design then, but drilled rather than dimpled as the 330i rear rotor is, I think (can't remember the last time I saw one).

Yes, the Euro 330i / e91 rotor is dimpled/slotted BMW Performance brand

[edit]
[I]So the CSL e46 M3 floating rotor won't work with the LCI e90 328i wheel carrier and hub?

It will only work with a spacer to correctly place caliper.

Oops, never mind. That was the Z4 35is rotor and it's a swap in for the 335i rotor, not the 135i rotor per: http://www.e90post.com/forums/showthread.php?t=857252 It'd be handy to have solid rotors front and rear with this type of aluminum hat, the F10 rear and something else that might work up front.

F10 with its aluminum hat matches 135i front BMW OE

Wondering if the F10 rotor and 135i rear caliper is a weight loss or gain over the 328i OE rear brake...

It should be a weight loss.
I think the original thread with the F10 idea has weights --> At least when comparing 335i rear Oem rotor vs F10 oem rear rotor

Originally Posted by justpete

So the weight difference is negligible but the brake torque should be increased assuming the piston diameter of the 135i rear caliper is the same size as that of the stock caliper. No idea how to find out though. And if it's the same and the torque is increased does this improve bias by bringing the rear up to ratio with the 135i front?

I can't comment on bias.
For Piston, the size should be slightly bigger than 328i. There is a user on 1addicts that has cutomized/refubished 335i caliper, and front 330i/2009 z4 330mm calipers. I think he measured the piston sizes.

Originally Posted by justpete

The 282303304 p/n must be incomplete, doesn't come up as valid anywhere.
Found this: http://www.realoem.com/bmw/enUS/part...&q=34212282303

Same thing? It's the left side rotor, right side is this: http://www.realoem.com/bmw/enUS/part...&q=34212282304

Doesn't look like a floating rotor but this site -- http://www.bmwpartsweb.com/Part-Numb..._E095124A.aspx -- describes it as such so must be the right part number then.

Yes these are the ones. The left vs right P/N is because of the directional grooves

Confused as to whether the 130i/e91 fitment for this rotor is such that it will work on the LCI e90 328i hub as opposed to the e91 hub.

[/QUOTE]
e9x hubs center the rotors between 328i or 330i or 335i very much identically, the difference is rotor diameter, hense different calipers for 335i
This is why 328's can use 335i Calipers and rotors by losing the hand brake(or modifying it to work).
135i brakes work on 128i rears the same way, with hand brake issue.

The challenge for e9x to use 135i rears, is the correct rotor to work on e9x hub with 135i rear caliper.

Originally Posted by justpete

FWIW the e46 M3 CSL rotor is about 1.375 lbs lighter than either the 130i/xi Perf Brake or the F10 rotor. So definitely the best option if usable with only a 5mm spacer which would be easily fabricated. And they're only about forty bucks more apiece than the F10 rotors.

Exactly. To verify this, I suggest using PN for regular e46m3 rear rotor and the PN for F10 rotor. In Google I searched the following:
"#####BMW PN### ATE"
Then in google images I was able to find ATE oem spec rotor diagrams for hat height and rotor width. Comparing both images and knowing that F10 needs 1.25mm spacer had me deduce the 5mm spacer. ( You will need to calculate out that longer backing lip that F10 has, since the idea had the back side lip removed on lathe by about 4mm)

I hope this helps.
Also for the Front 135i caliper - the CSL e46 rotor can work with Dieselboost brackets from Russian user 'tronik'.

Also, I do wonder if F30/F2x from 340mmx30mm rotors ( simmilar aluminum hat as 135i OEM 338x24 rotors) can work the 135i calipers because the only obstacle is the 30mm width. Compared to the 28mm width of the CSL rotor, it may just work at worst the pads need to have material removed.

[justpete]

Originally Posted by andrey_gta

Yes, the Euro 330i / e91 rotor is dimpled/slotted BMW Performance brand


It will only work with a spacer to correctly place caliper.


F10 with its aluminum hat matches 135i front BMW OE


It should be a weight loss.
I think the original thread with the F10 idea has weights --> At least when comparing 335i rear Oem rotor vs F10 oem rear rotor


I can't comment on bias.
For Piston, the size should be slightly bigger than 328i. There is a user on 1addicts that has cutomized/refubished 335i caliper, and front 330i/2009 z4 330mm calipers. I think he measured the piston sizes.


Yes these are the ones. The left vs right P/N is because of the directional grooves

e9x hubs center the rotors between 328i or 330i or 335i very much identically, the difference is rotor diameter, hense different calipers for 335i
This is why 328's can use 335i Calipers and rotors by losing the hand brake(or modifying it to work).
135i brakes work on 128i rears the same way, with hand brake issue.

The challenge for e9x to use 135i rears, is the correct rotor to work on e9x hub with 135i rear caliper.


Exactly. To verify this, I suggest using PN for regular e46m3 rear rotor and the PN for F10 rotor. In Google I searched the following:
"#####BMW PN### ATE"
Then in google images I was able to find ATE oem spec rotor diagrams for hat height and rotor width. Comparing both images and knowing that F10 needs 1.25mm spacer had me deduce the 5mm spacer. ( You will need to calculate out that longer backing lip that F10 has, since the idea had the back side lip removed on lathe by about 4mm)

I hope this helps.
Also for the Front 135i caliper - the CSL e46 rotor can work with Dieselboost brackets from Russian user 'tronik'.

Also, I do wonder if F30/F2x from 340mmx30mm rotors ( simmilar aluminum hat as 135i OEM 338x24 rotors) can work the 135i calipers because the only obstacle is the 30mm width. Compared to the 28mm width of the CSL rotor, it may just work at worst the pads need to have material removed.[/QUOTE]

OK, many thanks, I think I got it now.

So the plan is to use the e46 M3 CSL rotors on the rear axle and have the shop fabricate 5mm spacers for the 135i rear calipers. I can get both from getbmwparts.com for a reasonable price.

I have RacingBrake front 2-piece rotors for the 135i brakes already on the car but they can't use the XP10 pads.

So I'm thinking Pagid RS29 but need to know from RB first if this material is ok to use with their rotors.

If so then the solution is fairly straightforward to get floating rotors and fixed calipers on the car at less than half the cost of a BBK.

The only other issue is the parking brake shoes. I'm ordering the e46 M3 shoes as I think you mentioned in another thread they're 30mm instead of 20mm and provide a better match to the drum. I've already talked with the car chief about the required welding and it's no problem but he may find another solution.

Really do appreciate all the help, you've been a helluva resource on this, especially with the search string for the rotor dimensions, haven't been able to find anything on that yet.

[andrey_gta]

Originally Posted by justpete

If so then the solution is fairly straightforward to get floating rotors and fixed calipers on the car at less than half the cost of a BBK.

The only other issue is the parking brake shoes. I'm ordering the e46 M3 shoes as I think you mentioned in another thread they're 30mm instead of 20mm and provide a better match to the drum. I've already talked with the car chief about the required welding and it's no problem but he may find another solution.

Really do appreciate all the help, you've been a helluva resource on this, especially with the search string for the rotor dimensions, haven't been able to find anything on that yet.

No problem, really do want it to work out for your needs, as long as it meets your specs and use. Part of the reason I compiled the lists is for such a project.

The e46 m3 /e60 hand brake shoes are 163mm diameter and 30mm wide surface. They can me made to work using some small triangle metal welding or grinding at the spots that catch metal Tab of the hub. They also need 135i handbrake shoe baking plates to provide the 2 mounting holes for the brake shoe Pivot point screws/pins.

I do have some post on here that shows the welding/grinding areas for e46 m3 handbrake shoes. This path avoids doing the C shaped cut of the 335i brake shoes to weld onto 328i brake shoes:

http://www.1addicts.com/forums/showp...&postcount=824

http://www.e90post.com/forums/showpo...3&postcount=13

http://www.e90post.com/forums/showpo...8&postcount=14