Drilled Vs. Slotted Brakes
Drilled and slotted brakes are both aftermarket options that can be added to a car when the standard smooth plate rotor will not offer enough stopping power. They are used on race cars for their improved performance and wear resistance.
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Composition
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Slotted rotors contain more metal than drilled rotors. This means that slotted rotors have more raw stopping power than drilled rotors.
Design
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Drilled rotors have small holes drilled into the surface of the rotor plate. The holes make the rotor more efficient at slinging water away from the brake system. The slotted rotors have diagonal slots cut into the rotor surface. The slots help clear debris away from the brake pads.
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Advantages
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The braking life of slotted rotors is twice as long as that of drilled rotors. The slotted design also prevents overheating in extreme braking situations and contributes to a smoother ride by minimizing braking distance. Drilled rotors have a more balanced weight distribution. They are lighter and may be more suitable on cars for which overall weight is a concern.
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