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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > 335i rear brakes on a 328i with parking brake!



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      10-29-2011, 01:13 AM   #1
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335i rear brakes on a 328i with parking brake!

Ok, so here is the scoop on putting 335i brakes on the back of a 328i and keeping the parking brake. The fronts are bolt ons, so no no need to comment there.

This is for a 2007 e90 328i. As I understand it, some coupes and 'verts have a 185mm rear drum set up that apparently works as a bolt on. I have no confimation or knowledge of this set up or if it works.

If you want to use unmodified parts, you WILL need to change the hub carrier. And from what I have gathered, this involves bushings and bearing. These last items are unconfirmed, but more than I am willing to do.

As for any e90 with a 160mm rear parking brake, this is what needs to be done:

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I took my 160mm shoes and removed the linings using heat, a chisel and a hammer. Then, with a set of 185mm shoes, I cut them so they would fit right over the 160mm shoe.

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Then, I tacked them together using a small welder. I didn't do a full weld because I didn't want to introduce too much heat into the adhesive used for the new brake linings. Considering it is just a parking brake, I personally have no issues in doing this. Then I cleaned up the slag as best I could, masked off the linings and gave them a coat of black caliper paint.

They installed just like a normal 160mm shoe, and lined up perfectly with the backing plate, since they are, after all, oem shoes... just with a little extra added to them!

Here are a couple crappy phone pics:

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So you do NOT need any other 335i parts other than the shoes. In fact, all you need is the shoes(other than the actual brakes...). And some tools, cutters and a welder... and some spare time.

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      01-30-2012, 01:17 PM   #2
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Thank you for this!
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      01-30-2012, 04:32 PM   #3
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      04-07-2012, 10:29 AM   #4
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im local to vancouver. Wondering if you can help me out with this if I get a set of 335i brakes.
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      04-16-2012, 12:50 PM   #5
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How long dod this take you?
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      09-27-2012, 02:42 AM   #6
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bump from the dead. I changed out my rear rotors and pads and totally understand what needs to be done here. I will upgrade to 335i brakes next time I need to change pads/rotors.
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      10-05-2013, 10:16 PM   #7
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Quote:
Originally Posted by avocet View Post
O

If you want to use unmodified parts, you WILL need to change the hub carrier. And from what I have gathered, this involves bushings and bearing. These last items are unconfirmed, but more than I am willing to do.
Thanks for all the info to mod the brake shoes to work with bigger rotors, but at 115k miles, I am thinking I need to do a bearing change all around anyway so was planning to change the wheel carrier to a 335i's so that going to the 335i rotors would be a simple remove/install with no actual fabrication involved.

Compared part numbers on realoem of 325i to 335i suspension and for the most part all the attaching items to the wheel carrier are the same part number. The only parts I saw as different other than the wheel carrier itself, was the spindle/hub, bearings and of course the brake shoes. So I thought the wheel carrier for a 335i should attach to my 325i fine. Then I read a post by a guy claiming he got sent the wrong part (he needed a 325i wheel carrier and was sent a 335i wheel carrier) and that the casting was different.

Anyone know as a fact that a 335i wheel carrier will go on a 325i's suspension?
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      10-09-2013, 06:09 PM   #8
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      10-10-2013, 12:37 AM   #9
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Quote:
Originally Posted by Casca View Post
Thanks for all the info to mod the brake shoes to work with bigger rotors, but at 115k miles, I am thinking I need to do a bearing change all around anyway so was planning to change the wheel carrier to a 335i's so that going to the 335i rotors would be a simple remove/install with no actual fabrication involved.

Compared part numbers on realoem of 325i to 335i suspension and for the most part all the attaching items to the wheel carrier are the same part number. The only parts I saw as different other than the wheel carrier itself, was the spindle/hub, bearings and of course the brake shoes. So I thought the wheel carrier for a 335i should attach to my 325i fine. Then I read a post by a guy claiming he got sent the wrong part (he needed a 325i wheel carrier and was sent a 335i wheel carrier) and that the casting was different.

Anyone know as a fact that a 335i wheel carrier will go on a 325i's suspension?
hey this thread is alive!!!

now that I have had the car for awhile and done a bunch of susp related research, I am going to go out and say, with no commitment, that the 335 hub should bolt straight on.

why do I say this? since pretty much every piece attached to the hub is shared. look at m3 upgrades... all the pieces bolt in either a 335 or 328/325. the only fitment issue is the shock/strut mounting for the m3 lower control arm, and that has nothing to do with bolting to the hub.

let us know if you try!!!


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      01-10-2014, 03:07 PM   #10
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no weld required?

I have not personally tried this. But, would it be possible to drill a couple of new holes and possibly grind the ends to match the smaller shoe?
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      01-10-2014, 03:45 PM   #11
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Quote:
Originally Posted by smellthebeans View Post
I have not personally tried this. But, would it be possible to drill a couple of new holes and possibly grind the ends to match the smaller shoe?
I'm not sure about that and didn't really look too closely at making the 335i shoes work with the 325i knuckle as I was set with how I was going to do it (pretty much changed out everything) and got busy doing that.

It occurs to me now though that the parking brake shoes are mounted on the dust shield with camlocks. Maybe you can just modify (if needed) a 335i dust shield to mount on to the 325i knuckle and this will properly place the brake shoes to work with the 335i rotor. Wish I would have thought of this earlier. Still would have to pull the hub off the knuckle to change out the dust shield, but it'd eliminate having to get a 335i knuckle and axles...plus you probably need to change your wheel bearings anyway. Or maybe you can cut the dust shield so that you can just mount it on the knuckle without disassembling the hub. Not saying any of this will work as I haven't really looked in to it, but it seems possible to me and worth looking into if you're considering changing from 325i brakes to 335i.

Last edited by Casca; 01-10-2014 at 03:51 PM..
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      01-12-2014, 01:23 PM   #12
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Quote:
Originally Posted by Casca View Post
I'm not sure about that and didn't really look too closely at making the 335i shoes work with the 325i knuckle as I was set with how I was going to do it (pretty much changed out everything) and got busy doing that.

It occurs to me now though that the parking brake shoes are mounted on the dust shield with camlocks. Maybe you can just modify (if needed) a 335i dust shield to mount on to the 325i knuckle and this will properly place the brake shoes to work with the 335i rotor. Wish I would have thought of this earlier. Still would have to pull the hub off the knuckle to change out the dust shield, but it'd eliminate having to get a 335i knuckle and axles...plus you probably need to change your wheel bearings anyway. Or maybe you can cut the dust shield so that you can just mount it on the knuckle without disassembling the hub. Not saying any of this will work as I haven't really looked in to it, but it seems possible to me and worth looking into if you're considering changing from 325i brakes to 335i.
Not sure either. It's been a little cold outside to pull wheels and rotors off for a peek. Still seems easier and cheaper to grind and drill. I applaud your creativity.
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      01-18-2014, 06:27 PM   #13
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Quote:
Originally Posted by Casca View Post
I'm not sure about that and didn't really look too closely at making the 335i shoes work with the 325i knuckle as I was set with how I was going to do it (pretty much changed out everything) and got busy doing that.

It occurs to me now though that the parking brake shoes are mounted on the dust shield with camlocks. Maybe you can just modify (if needed) a 335i dust shield to mount on to the 325i knuckle and this will properly place the brake shoes to work with the 335i rotor. Wish I would have thought of this earlier. Still would have to pull the hub off the knuckle to change out the dust shield, but it'd eliminate having to get a 335i knuckle and axles...plus you probably need to change your wheel bearings anyway. Or maybe you can cut the dust shield so that you can just mount it on the knuckle without disassembling the hub. Not saying any of this will work as I haven't really looked in to it, but it seems possible to me and worth looking into if you're considering changing from 325i brakes to 335i.

Quote:
Originally Posted by smellthebeans View Post
Not sure either. It's been a little cold outside to pull wheels and rotors off for a peek. Still seems easier and cheaper to grind and drill. I applaud your creativity.

I have ideas....128i to 135i requires the same mod
Please see:
http://www.1addicts.com/forums/showp...&postcount=824

Problem is in the Wheel carrier/knucle, See near #12

http://realoem.com/bmw/showparts.do?...30&hg=33&fg=30

Near #12 that metal tounge is the issue. We need to add metal to it.. to make 35i brake shoes work. But than we need to grind off some of the tounge so that brakeshoe expander works with 35i brake shoes.

Alt is to do what z4 thread did and add just that bit of old shoes to new 35i shoes

28i knuckle - http://www.ecstuning.com/Search/33326774809/ES57760/
35i Knuckle - http://www.ecstuning.com/BMW-E92-335.../Rear/ES57759/
NOTICE how on 35i the brake line for hand brake hole is 5 mm away from Bearking/hup opening. On 28i part its right there much closer to the opening for the hub/bearing. Also, i think 35i hand brake support plate has mountign holes 5mm out so it will require to be merdged with the 28i plate to mount or have new holes drilled.

Thoughts!!!??

Also do bearings need to be changed once removed?! That's more expensive than planned


UPDATE:
spoke to z4 thread author: http://www.zpost.com/forums/showthread.php?t=751080

He is agaisnt adding metal, modifying the Knuckle. Therefore his solution is this plus 35i hand brake support backplate:
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      04-28-2014, 02:27 PM   #14
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Looks like I'll have to do this one of these days... dagger...seems like a lot of work... Thanks for the info though!!!
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      04-28-2014, 02:40 PM   #15
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Off topic... If i don't have the balls to do this fabrication - what parts would I need to get (335i specific) to get the parking brake to work on my lowly 325i? Many thanks in advance for your help!!!
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      04-28-2014, 03:56 PM   #16
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Take the 325 and 335 brake shoes to a welder to do the dirty work for you, it'll still be cheaper than buying the whole 335 parking brake assembly.
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      10-31-2014, 03:13 PM   #17
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brilliant idea, now I can fit 335 brakes to my rears with no issues. Thanks.
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      02-21-2015, 06:46 AM   #18
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No vendors offering this for us unskilled metal workers?!

I'm retrofitting 335xi to my 325xi wagon.. Did I read that xi carriers are the same as 335 so I won't have this issue?
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      02-21-2015, 08:02 AM   #19
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Quote:
Originally Posted by jezzy View Post
No vendors offering this for us unskilled metal workers?!

I'm retrofitting 335xi to my 325xi wagon.. Did I read that xi carriers are the same as 335 so I won't have this issue?
Isn't it simple to just buy f30/328i/428i/ rear M Sport rotor part# 34206797605 345x24 and keep the small 165mm parking brake shoes. I've explained this in other treads. Every shop that turns drums and rotors can just trim the rotor down to 336x25 to fit in the e90 335i caliper. In my mind, as someone who has done many unorthodox brake upgrades in the past this would be a lot easier task. I have 335i and don't need this done. However I've seen a lot of brakes, custom jobs as well. The modification chosen needs to be safe and easy to replicate. It's not like you wouldn't have to re do the brakes at some point if you are keeping the car, or the next owner. I wouldn't mess with the parking brake if I don't know what I'm doing or if I have to turn to another shop that has never done it either. The though of something going wrong and jamming up my brake/wheel at high speed will taunt me every time I'm driving. I guess, each it's own, I wouldn't...

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      08-23-2015, 11:17 PM   #20
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Quote:
Originally Posted by vwetish View Post
Isn't it simple to just buy f30/328i/428i/ rear M Sport rotor part# 34206797605 345x24 and keep the small 165mm parking brake shoes. I've explained this in other treads. Every shop that turns drums and rotors can just trim the rotor down to 336x25 to fit in the e90 335i caliper. In my mind, as someone who has done many unorthodox brake upgrades in the past this would be a lot easier task. I have 335i and don't need this done. However I've seen a lot of brakes, custom jobs as well. The modification chosen needs to be safe and easy to replicate. It's not like you wouldn't have to re do the brakes at some point if you are keeping the car, or the next owner. I wouldn't mess with the parking brake if I don't know what I'm doing or if I have to turn to another shop that has never done it either. The though of something going wrong and jamming up my brake/wheel at high speed will taunt me every time I'm driving. I guess, each it's own, I wouldn't...

Interesting... any more input on this.
I also found 34216864899 330x20mm disk for maybe smaller hand brake need to confrim

EDIT:
It appears this is for small handbrake shoes!!
34206797598
345x24 http://www.ecstuning.com/BMW-F30-328...ors/ES2568783/
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      08-25-2015, 08:09 PM   #21
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Quote:
Originally Posted by andrey_gta View Post
It appears this is for small handbrake shoes!!
34206797598
345x24 http://www.ecstuning.com/BMW-F30-328...ors/ES2568783/
I'm thinking the rotors you referenced are for a 185mm parking brake.

http://www.bremboaftermarket.com/En/...6-6625c4901e24
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      08-25-2015, 08:22 PM   #22
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It's possible because the same f30 spec car had a hub change so it has both 345mm rotors in both handbrake diameters

Ecs has pics of the modified handbrake plate for the 165mm rotor

I'll try to check next week and see if I need to fix my ecs link
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