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.
Slotted rotors
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.
Advantages
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.
Disadvantages
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.
Drilled rotors
You can easily recognize them since they have holes in the metal.
They are the best for street performance.
Advantages
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 rotors
performance improves.
Disadvantages
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.
Drilled and slotted rotors
They have both slot markings and drill markings and are suitable for
towing/hauling, off road or street performance.
Advantages
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.
Disadvantages
This type of rotor is not recommended for racing cars because the
drilling will make the disc vulnerable to cracking.
Blank or smooth rotors
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.
Advantages
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.
Disadvantages
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
