Either way, the cadmium plating doesn't apply to the interior of the cross-drills as far as I know.
Cadmium plating covers the entire rotor, including the vent areas.
Anyways, is this a real problem, cross-drilled rotors warping/being damaged due to road salt?
I don't see any difference the salt would make for drilled or non drilled rotors. If the concern is corrosion of the vent structure, that will still happen even without cross drilling. Our SE is driven throughout the winter and has had drilled and plated rotors. This is the second winter for the rotors and they still show virtually no rust or corrosion.
