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Brake Discs
Don't overlook the importance of OE high-quality brake discs from Bosch and TRW. They play a crucial role in dissipating heat and providing efficient braking. To ensure proper fitment, use our "Shop by Vehicle" feature and check for any fitment restrictions, as well as the diameter of the brake discs.
Brake Discs for all vehicle makes and models such as BMW, Mercedes, Audi, VW
A brake disc is a vital component of a vehicle's braking system. Brake discs are designed to dissipate the heat generated during braking, ensuring they stay cool. They are engineered to be robust and capable of withstanding the high heat and pressure generated by the braking process. This guarantees optimal braking performance and enhances safety for both the driver and other road users.
Brake discs are often replaced when brake pads are due for replacement. They should be regularly inspected and replaced as necessary since they are an integral part of the braking system. Over time, brake discs wear down as they constantly interact with the brake pads, causing them to become thinner. Excessive thinning can lead to cracking or warping of the discs, significantly impairing braking performance. If brake discs exhibit any damage, they should be replaced to prevent accelerated wear on the brake pads and other braking components. Routine maintenance also includes replacing brake discs to ensure the braking system operates optimally, enabling the vehicle to stop safely.
Use our convenient shop by vehicle feature or check the part numbers on your existing brakes to determine the correct brake discs you need. Pay attention to the diameter of the discs, as there may be different sizes used for the same chassis, depending on factors like engine size. Drivers of Audi, VW, and Skoda vehicles will require a PR number to help determine the correct brake discs.
At Run Auto Parts, we offer a wide range of brake discs to fit various top makes and models, including all BMW models such as the 3 Series, 5 Series, X5, Audi A4, A6, A3, Q5, Q7, Mercedes E-Class, C-Class, W204, Sprinter, Viano, VW Transporter, and Golf, Touareg. We stock brake discs from reputable OEM brands such as Bosch, TRW, and Hella Pagid. These brands are highly respected in the industry for their commitment to manufacturing high-quality automotive components. Our brake discs are made to the exact OE specifications, ensuring exceptional performance as designed by the original manufacturer. When you choose Run Auto Parts, you can have confidence in receiving top-quality parts and exceptional customer service, with our experts ready to assist and answer any inquiries you may have.
Read our Bosch braking blog for more information about their OE braking https://runautoparts.com.au/blog/post/bosch-brake-disc-rotors-and-pads
Brake Discs Q&A
1. Why are brake discs coated?
Brake discs are coated to protect against rust and corrosion caused by moisture, road salt, and other environmental factors. This coating helps extend the lifespan of the discs while maintaining their appearance. Some coatings also improve heat dissipation, reducing brake fade and enhancing overall braking performance.
2. What is brake dust, and why does it occur?
Brake dust is a fine powder made up of small metal particles from the brake pads and discs that accumulate on the wheels over time. It forms due to the friction between the brake pads and discs during braking.
European cars often use softer brake pad compounds to provide better braking performance, particularly at high speeds. These softer pads create more friction, improving stopping power but also producing more brake dust. While ceramic brake pads are available to reduce dust, they are generally not original equipment for most European cars.
3. Why are there different sizes of brake discs available for my car?
Brake disc sizes vary based on factors such as engine size, vehicle weight, and performance requirements. Larger engines and heavier vehicles require bigger brake discs to improve heat dissipation and stopping power. Performance models may also have larger, ventilated, or drilled discs to handle increased braking demands and enhance durability under high-stress conditions.
4. How do I find out which size brake disc I need if there's more than one option?
To determine the correct brake disc size for your car, you can:
- Check your vehicle’s service manual.
- Look at the part number stamped on your existing brake discs.
- Use our "Shop by Vehicle" tool to find compatible parts.
- Verify fitment restrictions, as some vehicles have multiple disc options based on trim level, brake package, or model year.
- For the most accurate match, confirm the part using your VIN (Vehicle Identification Number).
5. Do I need to replace brake discs and pads together?
It is recommended but not always necessary. Brake discs should be replaced if they are worn, scored, or below the manufacturer’s minimum thickness. Installing new brake pads on worn discs can lead to uneven wear and reduced braking performance. For optimal safety and braking efficiency, replacing both the discs and pads at the same time is often the best practice.
6. How often should I replace my brake discs?
Brake discs typically last between 50,000 to 100,000 km, but their lifespan depends on driving habits, road conditions, and the type of brake pads used. Signs that your brake discs may need replacing include:
- Vibrations or pulsing when braking.
- Deep grooves or scoring on the disc surface.
- A noticeable lip forming around the edge of the disc.
- Disc thickness below the manufacturer’s minimum specification. Regular inspections during servicing will help determine when replacement is necessary.