Originally Posted by Pete_vB
Very nice. Looks like a worthy (if pricey, I assume) upgrade.
Do you know the piston sizes on those, front and rear? Also disk diameter? I'm interested to calculate the brake balance vs stock.
It'd also be great if you could weigh them and the stock parts to quantify the (unsprung, rotating) weight loss.
The certainly look the business...
Originally Posted by chuxdelux
Beautiful. How much weight is saved over the standard GTR kit?
Weight comparison between BMW OE disc (fitted on M3 & 1M) and CCM-R disc:
OEM Front: 360x30mm 10.36 kg
OEM Rear: 350x24mm 9.09 kg
CCM-R Front: 380x34mm 5.08 kg
CCM-R Rear: 360x28mm 4.21 kg
I haven't got the piston sizes, but will measure when the car gets done next week. The brakes are at the workshop.