Dave Hinz wrote:
>
[...]
>
> THe crossdrillings give the air somewhere to compress to instead of
> making your pads float on the rotors, and when those heated columns of
> air are released (you can hear it), they carry away heat for you.
I think the holes are for cooling the pads rather than cooling the rotors.
It gives the pads a pause to vent the heat. But the brake heat depends a
lot on driving style. An impatient driver will have to brake many more
times than a relaxed driver. I did once experience brake fading on my (then)
Fiat Croma, the brakes weren't really up to urgent driving.