Girodisc rotors are curved vane.That would be a problem especially with tracking. The s2000 rear brakes were also solid and non vented which absorbs a significant amount of heat. Definitely has problems in terms of longevity of the rotors and calipers over time. Does anyone offer a vented rear disc ?
I am not talking about contact surface grooves / slots. The vaning is internal to the disc, in between the two friction surfaces. When it spins, it pumps air through the inside of the disc.Yes the curved vane in the surface but the the vents in the side of the rotor is very important for cooling as well.