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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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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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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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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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      02-09-2020, 11:00 PM   #32
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      02-10-2020, 07:24 AM   #33
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Where did u get race spec 763Ms? how much? and 11" fits the front???
These race spec 763M 18x11" square are cheaper than staggered 19x9" plus 19x10" for M2comp You can order them at dealer if you try hard enough
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      02-10-2020, 08:06 AM   #34
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Quote:
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Quote:
Originally Posted by Megator View Post
Where did u get race spec 763Ms? how much? and 11" fits the front???
These race spec 763M 18x11" square are cheaper than staggered 19x9" plus 19x10" for M2comp You can order them at dealer if you try hard enough
Maybe M2CS Racing 10.5" wide 513m are better suited to 380mm cw (Alcon) 6pot caliper ??
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      02-17-2020, 08:56 AM   #35
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Maybe M2CS Racing 10.5" wide 513m are better suited to 380mm cw (Alcon) 6pot caliper ??
When I get them to my hands I can try them... but don't think it will be any time soon Want to try 513m rears (18x10"), but not many people own them in my area.

but M4 GT4 is using also 6pot calipers... just the OEM 6 pots are huuuge
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      02-18-2020, 08:37 AM   #36
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Quote:
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When I get them to my hands I can try them... but don't think it will be any time soon Want to try 513m rears (18x10"), but not many people own them in my area.

but M4 GT4 is using also 6pot calipers... just the OEM 6 pots are huuuge
I assume you want to try the 513M rears on the front? I might be able to try that for you if my friend has not sold his spacers.

I have 513M with 265/285 NS-2R and so far no rubbing. Going to the track next week so will report back!

Whatever brakes I get next they must be dust seal less as I burn through them too quick.
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      02-18-2020, 03:19 PM   #37
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Quote:
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I assume you want to try the 513M rears on the front? I might be able to try that for you if my friend has not sold his spacers.

I have 513M with 265/285 NS-2R and so far no rubbing. Going to the track next week so will report back!

Whatever brakes I get next they must be dust seal less as I burn through them too quick.
Yeah, I want to try 513M rears (18x10) over my front brakes with optional grey 6-pot calipers and smaller 380x36mm rotors as I mentioned earlier. Tried ti test fit M4 GT4 763M (18x11) but there was just minimum space between wheel and caliper.

Btw I drive 265/30/19 front (plus 10mm spacers) and 295/30/19 (no spacer) with no rubbing, with more than stock camber front and rear on street spec 19 763M
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      02-19-2020, 05:53 AM   #38
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more than stock camber front and rear on street spec 19 763M
I dont have more camber, and the size is a bit irrelevant seing as different tires have different real world sizes.

The OEM star spec PSS tires are a 20 - 30 mm narrower at the tread than indicated. The NS2R is only 10 mm narrower but very very square with a 5 mm radius between the tread and sidewall.

https://www.tirerack.com/tires/tires...ot+Sport+Cup+2 check this link out under specs. You will see the same "size" tire has different physical dimensions.

The sidewalls are pretty much flush with the arches

Ah I forgot about your brakes. Can you measure the clearance you need? then I can possibly double check. ie min interior dia of the wheel.
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      Today, 08:49 AM   #39
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Quote:
Originally Posted by Megator View Post
I dont have more camber, and the size is a bit irrelevant seing as different tires have different real world sizes.

The OEM star spec PSS tires are a 20 - 30 mm narrower at the tread than indicated. The NS2R is only 10 mm narrower but very very square with a 5 mm radius between the tread and sidewall.

https://www.tirerack.com/tires/tires...ot+Sport+Cup+2 check this link out under specs. You will see the same "size" tire has different physical dimensions.

The sidewalls are pretty much flush with the arches

Ah I forgot about your brakes. Can you measure the clearance you need? then I can possibly double check. ie min interior dia of the wheel.
So today I tried 513M 18x10 and its same story like M4 GT4 spec 763M (18x11), they fit but just about 1mm soace between rim and caliper


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