Hey all,
I have these 400mm Girodisc rotors as well, the radial depth is 3in for those who asked...massive thermal batteries! These rotor's vanes cool exceptionally well compared to the carbon rotors & the bulk of the cooling gains we are seeing are from the rotor vanes acting as air pumps.
The massive pads are also a benefit for brake temp management!
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2015 M3 - AW 6Spd w/ CCB
MCS 2WR Dampers, Spec Twin Disk Clutch, MaxPSI CH, F80Paul Ethanol Tune, 3.5in DPs
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