F8X Brembo BBK Swap on E46 M3

[zim-zimmer]

I would definitely follow these instructions. The bent heatshield may need some additional massaging as they may be slightly contacting the rotors.

I’ve found the problem. On the inside of the disc (which fits over the shoes) there is a lip which is rubbing
on the brake shield. Just need to grind it flat, hopefully that should do the trick.

[Johnvu]

Take it out of gear, no parking brake, put a rock behind a wheel, jack up a rear corner and manually spin it. It’s definitely hitting something, so you need to lean in there and see exactly where

I would definitely follow these instructions. The bent heatshield may need some additional massaging as they may be slightly contacting the rotors.

[YoitsTmac]

Great write up. I’ve just done this to my M3, trouble is that I’ve got a nasty scraping noise from the back. Think it the shoes- I used the E46 M3 shoes which fit fine. Bent the heatsheild back but I’m scratching my head now. Any thoughts?

Take it out of gear, no parking brake, put a rock behind a wheel, jack up a rear corner and manually spin it. It’s definitely hitting something, so you need to lean in there and see exactly where

[zim-zimmer]

Great write up. I’ve just done this to my M3, trouble is that I’ve got a nasty scraping noise from the back. Think it the shoes- I used the E46 M3 shoes which fit fine. Bent the heatsheild back but I’m scratching my head now. Any thoughts?

[kenster]

What are people thoughts on this vs 996 brembo upgrades?

[YoitsTmac]

You need about 400mm in total if not a little more for the extension of the caliper. Some pads have extra “arms” that stick out too that need to be considered.

If you find wheels that fit F series cars then you’re probably good

[Zapattk]

Is there a specific wheel size thats needed to fit the brakes? I am currently running a very aggressive 18" wheel with a lot of brake clearance to the face but I am not sure if I have the barrel width

[pontek2]

Wouldnt any F80 aftermarket steel lines work? For example:

https://www.ecstuning.com/BMW-F80-M3...ainless_Steel/

You can order these directly from HEL on website under customs lines and mention they are for f80 to e46 brembo conversion.

[WestBankM4]

I have a spare set of F8x steel brakes, I'm also on the fence. Not sure if the weight is enough to offset the aesthetically pleasing caliper sand huge rotors. I may opt for a set of brand new calipers from a reputable company, the weight is definitely an issue for me, the rear brake shield not so much. You don't need to remove it, you just need to cut a portion of it out to fit flush.

[puma1824]

Thoughts on the added unsprung weight? How about the absence of dust shields on the rear brakes? Those 2 things I'm most concerned with. I'm torn if I should do this same "upgrade".

[YoitsTmac]

I guess so. The OP mentioned adding a right angle fitting on the caliper side and I assumed that was a necessity. Guess not. I will grab some other brake lines. Thank you thank you!!

[robgill]

Bump. Final plea for a brake line vendor? It’s the last piece I need

Wouldnt any F80 aftermarket steel lines work? For example:

https://www.ecstuning.com/BMW-F80-M3-S55_3.0L/Braking/Lines/Stainless_Steel/

[r4dr]

Hey Johnvu, I wanted to thank you for your very detailed very precise orientation on how to do this conversion. I was able to follow your step by step and install mines. And btw, for all those out there wondering if you can fit this on 18 wheels…yes it is possible, here are some pics.

Is the Brembo decal in that third photo upside down?

[PHNX636]

Bump. Final plea for a brake line vendor? It’s the last piece I need

Turner Motorsport F8X brake lines. The e46 brake lines work as well but full lock they’re a little on the tight side.
Edit: this is for the front


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[YoitsTmac]

Bump. Final plea for a brake line vendor? It’s the last piece I need