Cross-drilled Rotors:
Explanation: Cross-drilled rotors are a type of brake rotor used in high-performance vehicles. These rotors have holes drilled through them in a pattern that resembles a cross, hence the name. The purpose of these holes is to help dissipate heat more effectively, improve braking performance, and reduce the risk of brake fade during intense driving situations. The holes also help to prevent the buildup of gases between the brake pad and rotor surface, allowing for better contact and improved braking efficiency.
Technical Explanation:
Common Symptoms:
- Squeaking or squealing noises when applying the brakes
- Vibrations or pulsations felt through the brake pedal
- Reduced braking performance or longer stopping distances
Diagnosing:
- Visual inspection: Check for any visible cracks, warping, or uneven wear on the rotor surface.
- Measure rotor thickness: Using a micrometer, measure the thickness of the rotor to ensure it is within specifications.
- Check for heat spots: Look for discolored areas on the rotor surface, which can indicate overheating.
Common Repairs:
- Resurfacing or machining: If the rotor is still within the specified thickness, it can be resurfaced to remove any imperfections and restore a smooth surface.
- Replacement: If the rotor is too thin, warped, or damaged beyond repair, it will need to be replaced with a new rotor.
- Upgrading to cross-drilled rotors: Some drivers choose to upgrade to cross-drilled rotors for improved performance and heat dissipation.