Blank (also known as smooth) rotors are found on the majority of vehicles straight out of the factory. A blank rotor provides a full-face friction surface for the brake pads to clamp down on. This generates not only a lot of friction to slow down your vehicle, but also considerable heat, which can prematurely warp or wear-down braking system components. Smooth brake rotors can offer durable braking performance for thousands of miles under typical driving conditions. This type of brake rotor is inexpensive to manufacture, so shoppers will find many affordable smooth rotors to choose from.