Saw these on another forum, and wondered what they would look like on a G.

the black coating wears off seconds after the pads are applied. The onlt part that is left black in the hub. It is not a noticable difference over normal pads

wouldnt the whole rotor stay black except for where the pad hits it which is covered by the caliper anyway?

The caliper doesnt cover the entire rotor, but the pad does touch most of the rotor. The only part that stays black is the hub like Sean stated. There is nothing special about these rotors. We would use them at Firestone for most of the Euro cars we worked on.
-GP-

ah... ok. nvm

I painted my old ones black due to rust and stuff. If I find a pic I will post it for you. Nothing special.