When ordering brake pads for your vehicle there are several choices in materials that they are made out of. Brake pads typically come in 3 different material choices:
NON-ASBESTOS ORGANIC (NAO) – NAO brake pads are made with organic fillers like carbon, rubber, and Kevlar. The fillers dissipate heat and dampen vibrations. NAO brake pads are still standard on many vehicles because they work well, are inexpensive, and quiet. But, there’s one major downside: they’re soft and generally don’t last as long as other more expensive formulations.
Pros: Inexpensive, quiet
Cons: Wear quickly
SEMI-METALLIC – Called “semi-mets” by the pros, semi-metallic brake pads are filled with metal fibers. The fibers pull heat away from the rotor and transfer it to the metal backing plate to reduce overheating and brake fade. That’s why semi-metallic brake pads provide ultimate stopping power. But, they’re not perfect.
Since they’re the hardest of all pad materials, semi-metallic brake pads tend to chew up rotors faster. They also make the most noise. In fact, semi-metallic brake pads are notorious for squealing during stops. And, they produce rusty, brown brake dust that’s guaranteed to dirty up your fancy, aluminum rims.
Pros: Stopping power
Cons: Noisy, dusty
CERAMIC – No one likes dusty, noisy brakes. Ceramic brake pads are designed to come as close as possible to the braking performance of semi-metallic brake pads, without the noise, dust, and worn brake rotor issues. A large percentage of new cars come equipped with ceramic brake pads right from the factory. But shopping for ceramic brake pads can be difficult because every manufacturer uses a different formula.
When shopping for ceramic brake pads, a higher-priced ceramic brake pad is an indication of its quality. In other words, don’t replace a factory ceramic brake pad with an economy model and expect to get the same braking performance.