Are brake discs the same as rotors?

Are brake discs the same as rotors? That’s a good question.Brake discs are usually represented by: BRAKE DISC or BRAKE ROTORS.

Brake disc, in a word, is a round disc that rotates when the car is moving. The brake caliper clamps the brake disc to generate braking force. When the brakes are applied, it clamps the brake disc to slow down or stop the vehicle.

Disc brakes provide better braking and are easier to maintain than drum brakes.

Solid brake discs and Vented brake discs differences.

Disc brake discs (discs) are divided into solid discs (single-piece discs) and air duct discs (double-piece discs). The solid disc type is easier for us to understand. To put it bluntly, it is solid. Vented Disc, as the name suggests, has ventilation effect.

From the outside, it has many holes on the circumference leading to the center of the circle, called wind ducts. When the car is in motion, the air convection in the air duct is used to achieve the purpose of heat dissipation, which is much better than the solid heat dissipation effect.

Most cars are front-wheel drive, and the frequency meter of the front disc wears out a lot, so a front air duct disc and a rear solid disc (single-piece disc) are used.

The material of best brakes and rotors

The material of the brake disc is gray cast iron 250 standard, referred to as HT250, which is equivalent to the American G3000 standard.

The requirements for the three main elements of chemical composition are: C: 3.1∽3.4 Si: 1.9∽2.3 Mn: 0.6∽0.9. Mechanical performance requirements: tensile strength＞=206MPa, bending strength＞=1000MPa, deflection＞=5.1mm, hardness requirement: between 187∽241HBS.

Of course， there are many other material in aftermarket brake disc industry.

Multiple materials are optional for different models, such as G3000/GG20/GG15HC/GG20HC High Carbon: better vibration absorption, outstanding ventilation, resistant to drastic thermal cracking and deformation.

What type of brake discs are best?

OE standard Normal discs (Fine turning disc, Grinding disc)

Normal discs is close to OE standard. best aftermarket brakes- brake discs are in the same condition as OEM, and generally do not undergo special surface treatment.

Normally, there are two types of normal discs in the oe state, one is a fine turning disc and the other is a grinding disc.

Drilled and Slotted Brake Discs

Drilled and Slotted Brake Discs have improved braking performance and heat dissipation, but will cause greater wear on the brake pads.

Drilled and Slotted Brake Discs, also known as “high-speed discs” or “modified discs”, are generally installed in high-performance vehicles, such as racing cars, sports cars or sports cars.

However, this kind of brake disc will increase the wear of the brake pads, and the material and processing requirements of the brake disc are also relatively high.

Coated Brake Discs

Coated brake rotors are a relatively new development in the braking category.

Changing vehicle design to improve fuel economy and air drag has meant more airflow to the wheel. Along with airflow, there is also more exposure to water, salt and other corrosive elements. Add to harsh conditions, and you get a greater risk of rotor corrosion .

Usually there are Geomet coated, galvanized coated, Dacromet spray, etc.

It creates a protective barrier on the rotor surface to prevent corrosion, which increases the life of your brakes and improves the appearance of your rotor.

Carbon Ceramic Brake Discs

It can reach 300,000-400,000 kms long life time,at the same time Braking distance reducing by 20%-30%
Weight decreasing by 50%-60%，Even withstand high temperature 1400°C

Suitable for all kinds of racing cars Personalized customization for your racing car.

In Conclusion

Brake discs are a very important component in the braking system. Good brake discs provide stable braking, no noise, and no vibration.

Using brake discs with reliable quality can ensure their service life of 80,000 to 120,000 kilometers. Choose the right brake disc for your car according to this guide!