What Are Slots in Rotors For?

The purpose of slots in rotors is to allow air to pass through the rotor while providing a smooth surface for the brake pads to grip onto. The slots also help to dissipate heat and keep the brakes cool. When the brakes are applied, the rotors spin and the pads grip onto the rotor. The friction between the pads and rotors slows the vehicle down.

Slotted rotors can improve braking performance by providing better pad contact and cooling. However, they can also be more prone to warping and noise.