Originally Posted by fulcrum2
What is the correct direction for the ventilated brake disc?
Yes, it was discussed just recently. I think there was no correct answer. Like Justrace, I install mine the same as his. I find that the brakes will not grab so suddenly and giving rear wheel lock and gives a more linear braking.
But then looking at how AMG Mercedes install on their real 1:1 cars, it's the other way around ! Perhaps they want better braking and they can afford the stability as they don't run oneway front !

So there is no real answer. Just test and see which side you prefer.