BMW G20 G21 Orbitgrey Wheel Alloy Rim 18" 8,5J ET:40 Double Spoke 790M 8089891

Visual condition of the part

The product shows signs of use visible in the photos.

BMW G20 G21 Orbitgrey Wheel Alloy Rim 18" 8,5J ET:40 Double Spoke 790M is an original M-line alloy rim, designed for precise handling and a cohesive style for 3 Series models. The characteristic Double Spoke 790M design emphasizes the car's dynamic look, while the rim's structural parameters ensure stable vehicle performance. This is a solution for drivers who expect solid build quality and adherence to BMW's factory design specifications.

Specifications and technical data

• SKU: 8089891-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8089891
• Substitutable numbers: 8089891, 36118089891
• Rim diameter: 18"
• Rim width: 8.5
• Offset (ET): 40
• Hole diameter: 112
• Number of holes: 5
• Rim material: Aluminium
• Category: Rims

Rim construction characteristics

The rim belongs to the Wheels category and is made of a lightweight aluminum alloy, which helps reduce unsprung mass and improve suspension response. The multi-spoke Double Spoke M-line design provides a rigid, stable rim structure, which is important for dynamic driving and intensive braking. The aluminum material of the rim also facilitates effective heat dissipation from the braking system.

The geometric parameters of the rim have been selected for proper wheel fitment in the wheel arch and compatibility with the suspension and braking systems of the BMW G20/G21 series. The bolt pattern and diameter are adapted to factory hubs, which allows for correct load transfer and minimizes the risk of vibrations.

Purpose and fitment for BMW G20/G21

The Double Spoke 790M model is designed for modern BMW G20 and G21 bodies, where both handling precision and visual consistency with the M styling line are important. The rim dimensions support proper wheel arch filling, which translates into stable cornering and predictable vehicle behavior at higher speeds. By maintaining factory design specifications, the rim works with stock suspension and steering components without the need for additional modifications.

The properly selected offset and bolt pattern allow for correct seating of the rim on the hub, which is crucial for the even distribution of forces acting on the chassis. This type of configuration promotes the maintenance of proper suspension geometry, which has a direct impact on tire durability and driving comfort.

Benefits of using BMW alloy rims

The aluminum construction of the rim allows for a favorable strength-to-weight ratio, which translates into more precise steering responses. The reduced mass of the rim can support faster suspension response to road irregularities, thereby improving vehicle stability. Additionally, the Double Spoke 790M design ensures effective airflow around the brakes, which promotes cooling during intensive use.

The original M-line rim allows for visual consistency with other BMW sports equipment, such as aerodynamic packages or sports braking systems. This is a solution for users who want to maintain the factory character of the car while enjoying the benefits of a lightweight aluminum rim.

Product condition and practical application

The rim is offered in Used condition, meaning it has been in service but retains the structural functionality suitable for further use after verification and potential mounting preparation. This type of solution is beneficial for drivers looking for original BMW parts while maintaining a reasonable budget, especially when replacing a single rim after mechanical damage.

Before installation, it is recommended to perform a standard check of the rim geometry and the condition of the contact surfaces to ensure proper fitment to the hub and even tightening of the mounting bolts. A properly prepared alloy rim of this type can successfully perform in daily use as well as in more dynamic driving conditions.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of the chassis area in your BMW and need other components from the same group, such as rims of different sizes, seasonal wheel sets, or alternative rim designs, check out the available parts in the BMW Wheels category.

For those considering purchasing a used rim or planning to refresh their existing rims, we recommend our guide article Used rims like new: a guide to buying and refurbishing alloy rims, which discusses key aspects of assessing the condition of alloy rims and the possibilities for their regeneration.