The main components of a Brake system are the calipers, brake pads, and Rotors (disc). Each time the brake is depressed, the brake fluid pressure increases in the lines controlling the calipers. This makes them tighten around the disc. As time goes by, rotors and brake pads wear down as a result of the friction and heat they are subjected to each time you stop. If you allow your brake pads to wear down completely, the rotor gets damaged.

The type of rotor you will opt for will depend on your budget, the type of vehicle and your driving habits. Usually, rotors are replaced when worn. However, some vehicles –high performance or sports cars – will need new rotors to offer better braking performance, even if the old ones aren’t worn.

There are various types or rotors you can choose from. You need to understand them and know their pros and cons to make an informed choice.

This type of rotor has slots that resemble lines in the metal. They are suitable for street performance, towing /hauling, autocross/ track or off-road.

Slotted rotors will work well for SUVs, heavy trucks, competition cars and tow trucks. It’s important for you to get quality brake rotors if you choose the slotted style. In case the disc isn’t properly machined, it can crack sooner than later.

This type of rotor delivers better consistency with each stop because the contact in brake pads is reduced. Over time, the slotted rotors still perform well. Each time the slots shave down, a new material is exposed as you brake. This means you can depend on these pads to offer effective braking even with heavy duty vehicles.

Despite being so useful, slotted rotors have drawbacks. Their life span is shorter compared to other types and can shorten the lifespan of brake pads too.

You can easily recognize them since they have holes in the metal. They are the best for street performance.

If the area you live in experiences lots or rain, your best option is the drilled rotors. They can perform well in such climates because they offer an excellent holdup and deliver more friction. The bite is better as the drilled holes provide space for the water to escape. This dries off the components of the braking system. Less water means you get a better bite and the brake pads and rotorsperformance improves.

Even though the drilled rotors are often recommended because of their performance, they tend to wear unevenly and can develop cracks if used in racing vehicles. The cracks are caused by the temperature and heat extremes of a race. This means that they are a poor choice for any racing vehicle and will fail sooner than expected.

They have both slot markings and drill markings and are suitable for towing/hauling, off road or street performance.

This type of rotor offers all the benefits of the drilled and slotted rotor. They perform well but not necessarily better compared to the other types. You will notice this new brake motors on various luxury cars, including BMW and Mercedes. If you are consistent with maintenance, stick to the drilled and slotted rotor especially if they were original to your vehicle. The rotors work well for trucks, tow vehicles and cars that carry heavier loads. Heavy vehicles require a lot of energy to stop safely and this type excels at delivering this.

This type of rotor is not recommended for racing cars because the drilling will make the disc vulnerable to cracking.

This rotor has a plain surface with no markings or holes in the metal. They are perfect for off-road, towing, autocross/track and street performance.

Many new cars have blank rotors installed in them for cost effectiveness and maximum efficiency across different driving conditions. If you are not an aggressive driver, own a luxury car, or you need a quiet rotor above all, go for smooth rotors. It’s also a top choice for racers because it can hold through the entire race. This type also works well for other needs and lasts longer. Without any slots or holes, cracks rarely develop.

Some drivers think that the other types perform better than blank rotors, but that isn’t true. All that matters is your driving style.

No matter the type you choose, ensure you pay attention to how your vehicle breaks. As the brake system ages, plan ahead and get replacement parts from reliable suppliers or manufacturers like us. If combined well, rotors and brake pads will assist you to stay safe as you drive.

Source:  http://brakeneeds.livejournal.com/2471.html