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[Need help] M2 brake kit on E92 335i
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06-10-2022, 06:21 AM | #1 |
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[Need help] M2 brake kit on E92 335i
I'm building a track day focused manual N54 e92 and a planned upgrade for some time were the brakes. So when a full, barely used, kit of M2 brakes came my way, I decided to try and fit them on. However, such kit or the F30 M Performance kit was mostly retrofitted to e9x M3s, and the info on non-M fitting is almost non-existent.
Some general info first: Front calipers are the same from a F30 and M2/M4, but with 370mm discs for the F30 and 380mm for M2. The rear calipers differ between F30 and M2, and the discs are 340mm vs 370mm. I am mentioning this as there is more info on the F30 kit fitting in M and non-M e9x cars. I have two questions/issues Has anyone ran with the adapter kit available online (pics below) where the caliper bolts are 10mm instead of 12mm. And is there an adapter kit for the rear ones or for someone to share which would be the best way to mount it with a custom made adapter. Thank you Last edited by Kainy; 06-10-2022 at 03:10 PM.. |
06-10-2022, 04:39 PM | #2 |
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These seem to be the exact same setup as the F80/82 brakes, which people have put on their E90/92's. Do a search and there is 2 members that make the bushings/adapters to bolt them up
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06-10-2022, 06:31 PM | #3 |
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I suspect that you’ll be giving up the parking brake with this set up.
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06-11-2022, 07:30 AM | #4 | |
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Still the main question remains, how safe the bushing setup would be in track day use when they use smaller bolts (10mm vs 12mm)? |
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06-12-2022, 11:36 AM | #6 |
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You need these:
Front https://www.seemslegitgarage.com/pro...-big-brake-kit Rear https://www.seemslegitgarage.com/pro...-big-brake-kit |
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06-13-2022, 10:10 AM | #7 | |
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For the front ones I am a bit confused as I am sure they were for M3 again. But they appear not to be. Still if I am not mistaken they also use smaller bolts, so just the adapter is slightly different from what I currently have. |
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06-13-2022, 12:49 PM | #8 |
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all the info is out there, you got the wrong kit for the rear. with the right calipers front 370mm is bolt up, 380 with adapters. the rear is different with many variables, since u have a 335i u need e60 rotors with eccentric adapters, 370 needs adapter and hubs iirc. you need to trim the dust shield and try not to bend the ebrake support plate (otherwise remember to rebend and check clearance). yes its safe and imo is a must, the rear brakes were 1st issue i ran into driving the car hard
Last edited by 335i54n; 06-13-2022 at 12:55 PM.. |
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06-13-2022, 01:14 PM | #9 | |
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06-13-2022, 03:15 PM | #10 | |
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06-13-2022, 04:47 PM | #11 | |
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06-20-2022, 10:27 PM | #12 | |
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06-20-2022, 10:35 PM | #13 | |
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06-23-2022, 03:39 AM | #14 |
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Sadly I'll be dropping the M2 concept I have successfully fitted the fronts and was about to source 135 hubs, however, two of my 18" wheel sets did not fit the new brakes. One of which are my track OZ set which with a 20mm spacer do fit but very slightly rub on the caliper, because they were still slightly warped from the last track day I do have a set of 219Ms which should fit a bit better, but still too close for comfort. I think the adapters push the caliper slightly further than how it sits on a M2. So I'll be looking into AP Racing set probably with the smaller 356mm disks. Don't want to move up to 19" wheels
Last edited by Kainy; 06-23-2022 at 06:54 AM.. |
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06-24-2022, 12:42 PM | #15 | |
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09-03-2023, 11:36 AM | #16 |
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So, I did get back to the idea of M2/3/4 brakes for the E92. I missed it in my research before that the front calipers fit plug and play without using bushings if paired with 370mm F30 M Performance rotors. This also helps with clearance for 18" rims, although my style 193 18" still did not fit at all but 18" JR SL01 did perfectly.
So the deal is to get the M2, M3 or M4 calipers (painted ones, not silver) that have a 370/380 stamp on them. For rotors I got the OEM M Performance ones - 34106797603. And it still works with M2/3/4 pads. For the rears I opted for E9x M3 knuckles and the spacer plate from Seems Legit Garage. And that way it goes with the 370mm rear rotors from M2/3/4. This I haven't fitted yet. M2 370mm rear rotor left - 34212284811 M2 370mm rear rotor right - 34212284812 |
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