The Best GM Brake Rotors

There are two kinds of brake systems: disc brakes and drum brakes. In a disc brake system, brake rotors are the discs themselves. They attach to wheel hubs via ribs. What they do is clamp together with brake calipers and brake pads to help produce the friction required for braking. They also help disperse the heat of the braking process.

There are several types of brake rotors, including blank & smooth, drilled, slotted, and drilled & slotted. Many cars have blank & smooth rotors, while most SUVs have either slotted or drilled rotors. Some sports cars and high-performance vehicles, though, have drilled & slotted rotors because they're some of the best at getting rid of heat.

No rotor lasts forever, though. Old age and hard use eventually wear them out. To figure out when you should replace yours, consult your GM vehicle's owner's manual. Most recommend changing them every 70,000 miles.

However, there's a way to tell when it's time: look for signs of rotor problems. They include damaged surfaces, wobbling when braking, and unusual brake noises. In such cases, do an inspection and change any that you have to. However, be sure to replace them in pairs to make sure your vehicle can continue braking right.

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