BMW F30 F31 F32 Rear Wheel Alloy Rim 18" 8,5J ET:47 M Star Spoke 400 7845881

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW F30 F31 F32 Rear Wheel Alloy Rim 18" 8,5J M Star Spoke 400 is an original rear light-alloy rim, designed specifically for the 3 and 4 Series models, ensuring precise handling and consistency with factory suspension characteristics. Thanks to its robust aluminum construction and precisely selected geometric parameters, it serves as a functional foundation for building a stable and reliable drivetrain in BMW vehicles. This is a solution for drivers who expect to maintain driving performance in line with manufacturer standards while keeping a consistent, aesthetic look for their car.

Specifications and technical data

• SKU: 7845881-10
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7845881
• Substitutable numbers: 7845881, 36117845881
• Location on the vehicle: Rear
• Rim diameter: 18"
• Rim width: 8.5
• Offset (ET): 47
• Hole diameter: 120
• Number of holes: 5
• Rim material: Aluminium
• Category: Rims

Purpose and BMW fitment

The presented rim belongs to the Rims category and was developed as a rear axle component for F-series BMW cars. Its placement on the vehicle, specified as the rear, ensures that the rim geometry is adapted to the loads and operating characteristics of the rear suspension, which translates into predictable vehicle behavior during acceleration, braking, and cornering. Using an original alloy rim allows for full compatibility with factory drivetrain components, including hubs, mounting bolts, and traction control systems.

Aluminum construction and geometric parameters

The rim is made of aluminum, which provides a favorable strength-to-weight ratio and helps reduce unsprung mass in the vehicle. The carefully selected diameter, rim width, offset, and number of mounting holes create a coherent set of parameters that allow for proper wheel seating on the hub and maintain the correct position relative to the wheel arch. This configuration supports handling stability, improves steering response, and allows for seamless compatibility with factory-specified tire sizes.

Benefits of using an original BMW rim

Using an original alloy rim on a BMW F30, F31, or F32 primarily ensures the preservation of factory handling characteristics and confidence in the fitment with other drivetrain components. The aluminum construction promotes efficient heat dissipation from the braking system, which is important during dynamic driving. At the same time, the properly selected mounting parameters minimize the risk of vibrations, uneven tire wear, or incorrect wheel bearing loads. For the user, this means predictable vehicle behavior, driving comfort, and an aesthetic appearance consistent with the BMW design language.

Characteristics of the used product

The rim comes from the used parts segment, which allows for combining original origin with a more favorable purchase cost compared to a new component. For many BMW users, this is a reasonable compromise between quality and budget, especially when replacing a single rim after mechanical damage. By choosing such a component, you can maintain the stylistic consistency of the wheel set and preserve technical parameters in accordance with the manufacturer's original assumptions.

Wheel configuration expansion and additional information

An alloy rim with this specification works well both as a replacement for a damaged wheel and as a base for building a complete set of summer or winter wheels. Thanks to precisely defined mounting parameters, it is possible to select appropriate tires without interfering with the suspension or body structure. In the case of staggered configurations (different widths for the front and rear axles), using a dedicated rear rim allows for maintaining proper grip distribution and stability at higher speeds.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other components from the same group, such as rims of different widths, front axle rims, or additional styling configurations, check the available parts in the BMW Rims category.

For drivers who want to better understand the specifics of purchasing light-alloy components, including the selection process, condition assessment, and surface refurbishment options, the guide Used rims like new: a guide to buying and refurbishing alloy rims, which discusses key aspects of alloy rim operation and refurbishment, will be useful.

If you are considering wider use of aftermarket components in your car of this brand and want to learn practical tips on how to choose them, it is also worth reading the article Used parts for BMW – is it worth it? Key benefits for brand fans, which describes the advantages of using original, used components in BMW vehicles.