Plus, they let water escape more easily from the braking surface, the drive reports. These rotors have drilled holes and machined grooves cut in the braking surfaces where the pad makes contact. Power Stop® 1Click Extreme Z36 Truck and Tow Drilled But under normal conditions it makes no difference. Are drilled and slotted rotors better on a truck . This is why these kinds of rotors are mostly seen and used on the race track vehicles. They work better in wet climates when frequent precipitation occurs. All that extra work on the rotor is not for looks though. While this is good to reduce brake fade, drilled rotors can be structurally compromised due to the weakening of the. Also, slotted drilled rotors do not provide better cooling than the same rotor without slots and holes. This allows your brakes to run cooler and stop better. Drilled and slotted rotors do work particularly well for tow vehicles, trucks, and other cars that carry heavy loads. Slotted drilled rot...