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M2 Technical Topics > Track / Autocross / Dragstrip > Alternative m2c front rotors?

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      10-18-2019, 11:07 AM   #23
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I think no, they say it increases clearence to 19s

https://www.racingbrake.com/RB-Rotor...bmw-irp-04.htm

Also logically speaking an inch is 25.4mm, the disk is 20mm smaller (diameter to diameter), so a disc decrease of 20mm should not be enough to clear an "extra" inch of wheel.

Could be possible if the caliper was lower profile but that ain't the 2NH caliper's strong suit :/

BUT maybe RB brake kit + Apex forged wheels would clear?

Last edited by Megator; 10-18-2019 at 11:13 AM..
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      10-18-2019, 09:59 PM   #24
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Quote:
Originally Posted by Megator View Post
I think no, they say it increases clearence to 19s

https://www.racingbrake.com/RB-Rotor...bmw-irp-04.htm

Also logically speaking an inch is 25.4mm, the disk is 20mm smaller (diameter to diameter), so a disc decrease of 20mm should not be enough to clear an "extra" inch of wheel.

Could be possible if the caliper was lower profile but that ain't the 2NH caliper's strong suit :/

BUT maybe RB brake kit + Apex forged wheels would clear?
Yea, seems like the caliper is the issue.
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      10-21-2019, 03:54 AM   #25
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Quote:
Originally Posted by TUNEDM3 View Post
Yea, seems like the caliper is the issue.
Per Apex their new wheels give a greater clearence, you only need roughly 10mm to achieve the same clearence as OEM with the 19s.

Whether it is worth the hassle and cost, ill leave up to you.
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      10-23-2019, 10:48 AM   #26
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Has anyone been able to fit 18 inch wheels over the rear calipers? Considering an M2C, but I'd want to run a square 18 inch setup for the track. I understand the front would definitely need an aftermarket BBK but having to change the rears is a significant chunk of change.
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      10-23-2019, 09:26 PM   #27
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Quote:
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Has anyone been able to fit 18 inch wheels over the rear calipers? Considering an M2C, but I'd want to run a square 18 inch setup for the track. I understand the front would definitely need an aftermarket BBK but having to change the rears is a significant chunk of change.
18's fit over the rear.
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      10-31-2019, 09:44 AM   #28
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18's fit over the rear.
I'll test fit racing 18" 763M in two weeks over that RB rotors with 2NH calipers. I'll let you know guys and I'll post some pictures if it will fit
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      11-04-2019, 02:21 AM   #29
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I'll test fit racing 18" 763M in two weeks over that RB rotors with NH2 calipers. I'll let you know guys and I'll post some pictures if it will fit
So we test fitted BMW 763M wheels in racing spec (11x18) with RB rotors (380x36mm) with 2NH calipers and it fits, but there is just paper thin space, that means its useless and it wont work. Im sorry guys, maybe some other wheels will fit, but I guess that 513M will be same story

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      11-04-2019, 07:56 AM   #30
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Quote:
Originally Posted by Vojta89 View Post
So we test fitted BMW 763M wheels in racing spec (11x18) with RB rotors (380x36mm) with 2NH calipers and it fits, but there is just paper thin space, that means its useless and it wont work. Im sorry guys, maybe some other wheels will fit, but I guess that 513M will be same story

Where did u get race spec 763Ms? how much? and 11" fits the front???
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      11-05-2019, 05:12 AM   #31
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Where did u get race spec 763Ms? how much? and 11" fits the front???
It's too wide for the front, even with my 3,5 camber... We bought it for F80 track built my friend owns
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