BMW 3 E90 E91 E92 E93 Front Left Right N/O/S Perforated Wheel Brake Disc Set

BMW 3 E90 E91 E92 E93 Front Left Right N/O/S Perforated Wheel Brake Disc Set is an original set designed for the front left and right wheels, engineered specifically to meet the requirements of the BMW braking system. The perforated working surface improves the dissipation of gases and debris from the brake pads, which promotes stable, predictable braking in daily operation.

Specifications and technical data

• SKU: 6855000-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6855000
• Substitutable numbers: 34116855000, 6855000, 34116770729, 6770729, BG
• Location on the vehicle: Front, Left, Right
• Category: Brake Disc Rotors

Purpose and compatibility

The presented set includes front brake discs intended for installation on the left and right sides of BMW 3 Series E90, E91, E92, and E93 models. The design of the discs is adapted to the factory braking system of these models, which facilitates installation and allows for the maintenance of original system performance parameters.

Thanks to the use of perforations, the discs perform well in heavily used vehicles where consistent braking force and resistance to overheating under typical road conditions are important.

Construction and technical characteristics

The perforated working surface of the discs supports the effective dissipation of gases and dust generated during friction between the pad and the disc. This reduces the risk of forming a so-called gas cushion between the pad and the disc, which translates into more stable, linear brake pedal operation.

The arrangement of the holes is optimized for uniform thermal and mechanical load, which helps maintain the disc's geometry over a long period of use. The use of the original BMW design helps maintain proper cooperation with factory calipers and brake pads.

Vehicle placement and installation

The set is intended for installation on the front axle, on the left and right sides. This solution allows for the simultaneous replacement of both discs, which is recommended from the point of view of uniform braking system operation and maintaining symmetry of braking forces.

The original mounting and fitment to the hub and calipers of the BMW 3 Series E90–E93 facilitate the mechanic's work and reduce the risk of issues with disc runout resulting from improper fitment. In practice, this translates into more comfortable and predictable braking system operation after replacement.

Condition and benefits of choosing used parts

The product is in the Brake discs category and is offered as a used component, which allows for a significant reduction in repair costs compared to purchasing new OEM parts. For many BMW 3 Series users, this is a reasonable compromise between quality and budget, especially during comprehensive brake system maintenance.

If you want to better understand how to safely use reclaimed components in the braking system and how to optimize service costs, it is worth reading the guide: Brake calipers under the microscope: How to effectively reduce brake system repair costs by choosing proven reclaimed parts. The article discusses practical criteria for selecting used elements as well as safety issues.

Expanding BMW brake system maintenance

If you are planning a comprehensive repair or upgrade of the braking zone in your BMW and need other elements from the same group, such as additional discs, pads, or brake lines, check out the available parts in the BMW Brake discs category.

Summary

BMW 3 E90 E91 E92 E93 Front Left Right N/O/S Perforated Wheel Brake Disc Set is a solution for drivers who want to maintain the performance characteristics of the factory braking system while reducing service costs. The original design, fitment to the front axle, and perforated working surface support stable braking and proper cooperation with other system components.