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      05-05-2019, 09:53 AM   #8
Jeb_
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Drives: 2011 128i
Join Date: Jun 2016
Location: NC

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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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