In most vehicles, there are over 40 components that make up the braking system to enable you to come to a complete halt. One aspect that you might not know about is the brake rotor.
These are circular discs that are connected to each wheel. Two are located in the front, and two more are positioned on the back. Designed to turn kinetic energy (motion) into thermal energy (heat), the brake rotors are a crucial part of the mechanism as a whole.
When you step on the brake pedal, the calipers push the brake pads together. This causes friction across the rotors’ surface which then directly resists the spin that the wheel wants to continue making. As a result, the speed of the vehicle is slowed down until there is no more movement.
There are four types of brake rotors including the following:
Blank and Smooth - These are equipped on most passenger models, and they have no design or indentations on the surface.
Drilled - This model comes with holes.
Slotted - Lines or long/thin slots have been carved into the metal.
Drilled and Slotted - Typically used for enhanced performance, this version has both slots and holes.