BMW E46 M3 E85 E86 Z4M Rear Brake Disc Set Left Right N/O/S 2282303

BMW E46 M3 E85 E86 Z4M Rear Brake Disc Set Left Right N/O/S is an original set mounted on the left and right side of the rear axle, designed for BMW sports models. This set from the Brake discs category allows you to maintain factory braking characteristics while optimizing service costs. It is a solution for drivers who expect precise braking system performance and full compatibility with BMW engineering.

Specifications and technical data

• SKU: 2282303
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2282303
• Substitutable numbers: 2282303, 34212282303, 2282003, 34212282003
• Location on the vehicle: Rear, Right, Left
• Part type: Brake Disc Rotor
• Category: Brake Disc Rotors

Purpose and compatibility

The presented rear brake disc set has been designed specifically for BMW E46 M3 and BMW Z4M E85/E86 generation models. It includes components mounted on the left and right side of the rear axle, which facilitates comprehensive brake system maintenance in a single service cycle. Thanks to their factory origin, the correct geometry, fitment to calipers, and proper interaction with stability control systems are maintained.

Construction and performance parameters

Original BMW rear brake discs are designed to withstand the high thermal loads typical of M versions, therefore they provide stable friction across a wide range of operating temperatures. The design, matched to the specific axle and mounting side, guarantees proper pad guidance, even wear, and predictable behavior during intensive braking. Using dedicated rear discs allows for maintaining the correct balance of braking force between the front and rear axles, which is crucial for vehicle stability.

Benefits of using original BMW discs

Choosing original brake discs for the BMW E46 M3 and Z4M primarily ensures a secure fit to the hub, calipers, and pads, without the need for modifications or adjustments of replacement parts. This set allows you to:

• maintain the factory braking characteristics intended by the manufacturer,
• reduce the risk of vibrations and brake pedal judder resulting from incorrect part selection,
• maintain system consistency with ABS and traction control systems,
• optimize maintenance costs while retaining original build quality.

For cars used dynamically, including track or sports applications, the proper selection of rear brake discs has a direct impact on the repeatability of braking force and the predictability of the car's behavior in extreme situations.

Condition, verification, and safety of use

The set comes from disassembly and is offered as a used brake system component. Before being offered for sale, such parts are standardly inspected for working surface wear, potential cracks, excessive corrosion, and compliance with mounting requirements for the given model. It is recommended that before installation, every used brake disc be additionally verified by the workshop performing the service, taking into account the measurement of working thickness and potential axial runout.

If you want to prepare in detail for purchasing recycled parts, it is worth using practical tips. You can find an extended checklist in the article: Second-hand brake system: how to safely choose discs, calipers, and ABS?, where it is described step-by-step what to look for when choosing used brake components.

Expanding the BMW brake system

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 disc sets, compatible pads, or supplementary brake lines, check the available parts in the BMW brake discs category.

For drivers who are simultaneously replacing calipers, a guide dedicated to the economical and safe operation of the brake system may also be helpful: Brake calipers under the microscope – how to lower brake system repair costs by choosing proven recycled parts. This makes it easier to plan the full scope of service work and select a consistent set of components.