Description
The Front Vented Brake Disc for Mini Cooper S R55/R56 is an original brake system component, designed for installation on the left or right side of the front axle. Its vented design ensures stable heat dissipation, which translates to consistent braking performance and better vehicle control in everyday use.
Specifications and technical data
- SKU: 6858652-1
- Mark: Mini (Genuine OE)
- Condition: Used
- OEM Part Number: 6858652
- Substitutable numbers: 34116858652, 6858652, 34116774986, 6774986
- Location on the vehicle: Front, Left, Right
- Category: Brake Disc Rotors
Intended Use and Fitment
The presented vented brake disc has been specifically designed for Mini Cooper S models of the R55 and R56 generation, intended for the front axle. The design allows for installation on both the left and right sides, making it easier to select the correct part during brake system servicing.
By utilizing the original Mini design, proper positioning relative to the caliper, hub, and dust shields is maintained, promoting even pad wear and predictable braking characteristics.
Construction and Performance Characteristics
This disc belongs to the Brake Discs category and features a vented construction that increases the heat dissipation surface area. During intensive braking, this reduces overheating, lowers the risk of brake fade, and helps maintain stable friction between the pad and the working surface.
The appropriately selected working thickness and ventilation channel geometry contribute to uniform temperature distribution, which reduces thermal stress and helps mitigate the risk of disc judder and brake pedal vibrations.
Benefits of Using an Original Mini Disc
Using an original disc in a Mini Cooper S R55/R56 allows for the preservation of the factory braking characteristics intended by the vehicle manufacturer. In practice, this means:
- consistent operation with the factory ABS and stability control systems,
- proper fitment with OEM calipers and brake pads,
- adequate thermal reserve for dynamic driving,
- maintenance of predictable braking distances under typical road conditions.
A component from this group, even if used, can be a cost-effective solution for repairs, provided its condition is properly assessed and it is installed according to the service procedure.
Installation Location and Service Recommendations
The disc is designed for installation on the front of the vehicle, on either the left or right side. When replacing, it is recommended to:
- select brake pads with parameters that comply with Mini’s requirements,
- inspect the condition of the hub, bearing, and caliper guides,
- thoroughly clean the disc-to-hub mating surface,
- use the correct tightening torques as per the service documentation.
This approach helps maintain brake system stability and reduces the risk of subsequent vibrations or uneven wear.
Assistance with Selection and Additional Resources
If you are planning a comprehensive repair or upgrade of the braking area on your Mini and need other components from the same group, such as discs, pads, or brake lines, check the available parts in the Mini Brake Discs category.
When choosing used brake system components, it is advisable to consult practical tips and checklists – you can find them in the article Used Brake Systems: How to Safely Choose Discs, Calipers, and ABS?, which discusses key safety aspects when purchasing such components.
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