ROTOR STYLE: Contact Surface treatment 4
Since the drilled holes take mass out of the rotors, cracks may occur between the perforations when used on a vehicle that takes on a greater weight load due to hauling of heavy cargo or sustained towing. Vehicles with built-up engines, turbos, or superchargers can also have a damaging effect on drilled rotors, especially when abused by either stunt driving or drifting.
