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      09-14-2017, 04:15 AM   #1070
lemetier
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Quote:
Originally Posted by medphysdave View Post
2NH appears to be option on new 7 series


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BMW Model Discussions
7 Series & 8 Series
7 Series - G11 / G12 (2016 - current)
figgie
MN
May 03, 2016 #1
M Sport Brakes 2NH
Update 6-16-2016:
Ok,

it seems like all the documentation is correct. I just got off the phone with 2 BMW Geniuses (In Ohio) and BMW NA. I ordered my 750 with the 2NH option and it came with black calipers (ie the autobahn calipers). This is incorrect. So now I am talking with my CA as it is supposed to be the blue calipers AND larger rotors (hence the requirement for the 21H wheels). Apparently BMW GmbH erred on this option.

Update: It took BMW Geniuses 1 month to get back to me but finally.

Here is the sizing;

standard: 348mm (13.7) front disc, 345mm (13.58") rear disc. Grey Calipers
Autobahn package: Black Grey Calipers
M-Sport Package: 374mm (14.72") front disc, 370mm (14.57") rear disc, Blue calipers. No wonder the M-sport package is needed. It is a 1 inch increase in disc size on all 4 corners.

The same option on 3 series seemed to have same size rotors.

http://www.7post.com/forums/showthread.php?t=1302408

If they played with M5 parts

For stopping, the M5 gets as standard 15.5-inch steel rotors up front with 6-piston fixed calipers and 15-inch rear rotors with floating single-piston calipers.

~394mm f and 381mm r

I guess my point to all of that......I thought the M2 already had 380mm fronts. Would they use the same option number for different size rotors. Or is 2NH the same no matter what car its on?
Those are poor comparisons to use. Diameter isn't everything. More so when the PCD, Hub, and resulting swept annulus area are completely different. Now you want options as standard and cross compare incompatible components?
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