BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

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      02-22-2019, 03:05 PM   #1
johanrl
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135i rear calipers for 128i

I know is been discuss before, but i can't find any older threads with the info. What is need to have funcitonal rear 135i brakes on the 128i. Only switching because i got a great deal and did install the fronts but know want to do rear.
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      04-01-2019, 08:47 PM   #2
Jeb_
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Bump because I'm currently looking into this as well. Only I'm looking to install rear brakes from an F30 335i.

As far as I can tell it's the same issue with parking brake location/size when going from a *28i car to a *35i car over the past couple generations. From what I've been reading, the only way to get the parking brake to work on an 128i when installing 135i brakes looks to be by swapping out the hubs with ones from an 135i as well. I'm not sure what all is involved with that swap.
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      04-02-2019, 07:26 PM   #3
Kerbouchard
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Just came to find the same answer actually. Have a full set of 135i calipers waiting to go on pending a solution here. Anyone found a shop who would fab up custom parking brake shoes to fit? Alternatively can someone please link the DIY for the hub swap?
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      04-02-2019, 09:11 PM   #4
One28i
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Thumbs up

I am on the similar thought process. I was planning on doing a complete F30 brake swap with 340mm rotor 4 piston fronts and 345mm rotor 2 piston rears, to learn that the rears don't fit as a direct swap. I was thinking of getting the E82 135i rear calipers and install those, but have not confirmed that that it is a direct fit either. on the F30 swap for the rears, the spacing and hole size was off, see the links below, of what has been done. also what complicates the process, is our rear hub on 128i is different from 135i and rest of E9X from my readings...

https://1.***********.com/threads/e8...-kit-f-r.2540/

https://babybmw.net/forum/viewtopic....10449&start=15

https://babybmw.net/forum/viewtopic.php?f=11&t=76490
this guy used E39M5 rotors...

some from the E9X sections

https://www.e90post.com/forums/showthread.php?t=1030156

https://www.e90post.com/forums/showt...828362&page=76

I am still looking for the full proof method before I buy all my bits and pieces.

let the discussion continue
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      04-04-2019, 01:32 PM   #5
johanrl
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Now I'm wondering if the e39 m5 rotors will fit 128i shoes. I know there is a guys here that did use a f30 328i rear rotors which fit over 128i shoes but need it to shave about 15mm due to the rotors being 345mm.
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      04-28-2019, 05:48 PM   #6
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Quote:
Originally Posted by One28i View Post
I am on the similar thought process. I was planning on doing a complete F30 brake swap with 340mm rotor 4 piston fronts and 345mm rotor 2 piston rears, to learn that the rears don't fit as a direct swap. I was thinking of getting the E82 135i rear calipers and install those, but have not confirmed that that it is a direct fit either. on the F30 swap for the rears, the spacing and hole size was off, see the links below, of what has been done. also what complicates the process, is our rear hub on 128i is different from 135i and rest of E9X from my readings...
I followed that same chain of threads and discovered that getting the rear f30 335i brakes to work was going to be more difficult than I originally anticipated.

From another thread on here: https://www.1addicts.com/forums/showthread.php?t=886475

I decided to go with the rear 135i brakes. I want to keep the e-brake but I prefer not to go through making the hybrid shoes by cutting and welding the 128i and 135i ones together. I'm going to try what was mentioned with swapping to 135i supporting plates and e46 M3 shoes.

I ordered the e-brake parts. Now I just need rotors and rear calipers before I can give this a try.
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      05-04-2019, 12:33 PM   #7
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Quote:
Originally Posted by Jeb_ View Post
I followed that same chain of threads and discovered that getting the rear f30 335i brakes to work was going to be more difficult than I originally anticipated.

From another thread on here: https://www.1addicts.com/forums/showthread.php?t=886475

I decided to go with the rear 135i brakes. I want to keep the e-brake but I prefer not to go through making the hybrid shoes by cutting and welding the 128i and 135i ones together. I'm going to try what was mentioned with swapping to 135i supporting plates and e46 M3 shoes.

I ordered the e-brake parts. Now I just need rotors and rear calipers before I can give this a try.
Could you elaborate on the 135i plates and e46 m3 shoes option. Thx
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      05-05-2019, 09:53 AM   #8
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Sure thing.

From what I've been reading, it looks like the most common way (or at least the way I found best documented) to get the parking brake to work when swapping 128i rears for 135i ones is to:
- Remove the friction material from the 128i shoes
- Cut 135i shoes in a way that the part with the friction material has a radius that will match up with the outer radius of the 128i shoe
- Weld the two pieces together

Which will allow shoe contact with the inner barrel of 135i rotors without needing to swap any other parts. However, I don't have a welder and would prefer not to go the full "custom" route.

I have seen it mentioned once or twice that there is another option that doesn't require welding a hybrid shoe together, but it's not nearly as well documented. As far as I can tell it involves:
- Swapping the 128i e-brake shoe supporting plates (34216771429) for the 135i part (34216771430)
- Replacing the 128i shoes with ones from an E46 M3 (34416761293).

Supposedly you'll need to file away some material on the shoes to get the catch points to line up with the original 128i components. And it's possible the width of the shoes will need ground down some if there's a step on the inner barrel of the 135i rotors.

I now just need rotors and I'll have everything I need. But realistically it's going to be a month or two before I have the time to be able to say whether this works or not.
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      06-20-2019, 08:04 AM   #9
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Hello all,

I did this swap a few years ago. For a proper rear swap you need
135i knuckles and axles.
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      06-20-2019, 08:21 AM   #10
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Quote:
Originally Posted by lovethe1 View Post
Hello all,

I did this swap a few years ago. For a proper rear swap you need
135i knuckles and axles.
Exactly.
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