BMW 1 3 Series E90 F20 F30 Rear Left / Right N/O/S Wheel Brake Disc 300X20

BMW 1 3 Series E90 F20 F30 Rear Left / Right N/O/S Wheel Brake Disc 300X20 with a working dimension of 300x20 is an original brake system component designed for the rear axle, for both the left and right sides. This used BMW part allows you to maintain factory braking characteristics, proper cooling, and stable vehicle handling. Thanks to its precise fit for specific 1 and 3 Series models, it provides a solid foundation for professional brake system repairs.

Specifications and technical data

• SKU: 6792227
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6792227
• Substitutable numbers: 34216792227, 6792227, BG
• Location on the vehicle: Rear, Right, Left
• Category: Brake Disc Rotors

Application and fitment for BMW 1 and 3 Series

The presented BMW rear brake disc has been designed for use on the rear axle in selected BMW 1 Series and 3 Series models, including the E90, F20, and F30 generations. The design is intended for installation on both sides of the vehicle – left and right – which facilitates part selection during comprehensive brake system maintenance. The 300x20 dimension ensures the correct friction surface for the caliper, which translates into predictable, even braking.

Construction and technical characteristics

The disc belongs to the Brake discs category and is an integral part of the BMW brake system. The working thickness and diameter are matched to factory parameters, ensuring compatibility with stock calipers and brake pads. The properly shaped working surface of the disc promotes stable contact with the pad, which reduces vibration and improves braking comfort.

As an original BMW component, the disc is made of material with parameters adapted to high thermal and mechanical loads, typical for daily operation and dynamic driving. A used part allows for a favorable cost-to-quality ratio while maintaining the proper performance of the brake system.

Placement on the vehicle and role in the brake system

The disc is intended for the rear axle, left or right side, which allows for flexible use when replacing a single component or a pair of discs. A correctly selected and installed disc on the rear axle:

• stabilizes vehicle behavior during braking,
• ensures even distribution of braking force between the left and right sides,
• supports the operation of safety systems, such as ABS or traction control, through predictable friction characteristics.

Thanks to the preservation of factory dimensions and geometry, the disc works with other brake system components without the need for modifications.

Benefits of using an original BMW disc

Choosing an original, used BMW brake disc for the 1 and 3 Series allows you to maintain the consistency of the entire brake system with the manufacturer's specifications. Key advantages include:

• Factory fitment – maintaining the correct diameter, thickness, and offset, which facilitates installation and minimizes the risk of disc runout issues.
• Consistent braking characteristics – predictable vehicle behavior during emergency braking and daily driving.
• Economical repair – a used part allows you to reduce service costs while maintaining the original BMW specification.

This solution is particularly beneficial for repairs of intensively used vehicles, where both safety and rational maintenance costs are important.

Safe selection of used brake system components

When choosing a used brake disc, it is worth paying attention to compatibility with the specific BMW model, the condition of the working surface, and the fitment with existing calipers and pads. To better prepare for the purchase and evaluation of such components, the following guide will be helpful: Second-hand brake system: how to safely choose discs, calipers, and ABS?, where you will find a practical checklist regarding the selection of used brake components.

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