[Anthony1s]

https://f87.bimmerpost.com/forums/sh....php?t=1497066

Standard M2/M2C brakes (blue) (source: see here):

• blue front caliper - 4.890 kg or 10.78 lbs
• blue rear Caliper - 3.600 kg or 7.94 lbs
• 380x30mm front rotor - 11.300 kg or 24.91 lbs
• 370x24mm rear rotor - 9.300 kg or 20.50 lbs
  = 58.180 kg or 128.26 lbs

2NH M Sport Brakes (silver) - M Performance Parts Brakes (red):

• silver/red front caliper - 7.540 kg or 16.62 lbs
• silver/red rear Caliper - 4.310 kg or 9.50 lbs
• 400x36mm front rotor - 13.870 kg or 30.58
• 380x30mm rear rotor - 11.300 kg or 24.91
  = 74.040 kg or 163.23 lbs

14.8lbs heavier calipers
20.16lbs heavier rotors