BMW F30 F31 Ferric Grey Wheel Alloy Rim 19" M Star Spoke 403 ET:36 8J 7850020

Visual condition of the part

The product shows signs of use visible in the photos.

BMW F30 F31 Ferric Grey Wheel Alloy Rim 19" M Star Spoke 403 ET:36 8J is an original M-series alloy rim, designed specifically for BMW 3 Series F30/F31 models. The distinctive M Star Spoke pattern in Ferric Grey emphasizes the dynamic body lines and ensures a consistent, factory-original look for the vehicle. This is the ideal solution for drivers seeking an aesthetic yet technically precise component from the Wheels category.

Specifications and technical data

• SKU: 7850020-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7850020
• Substitutable numbers: 36117850020, 7850020
• Color: Grey
• Rim diameter: 19"
• Rim width: 8
• Offset (ET): 36
• Hole diameter: 120
• Number of holes: 5
• Rim material: Aluminium
• Category: Rims

Purpose and fitment for BMW F30/F31

The rim was developed as original factory equipment for the BMW 3 Series F30/F31 generation, ensuring full compatibility with the suspension and chassis design specifications. Properly selected mounting parameters, including bolt pattern, diameter, and offset, allow for correct wheel fitment within the wheel arch without interfering with suspension geometry. The aluminum construction supports proper unsprung mass distribution, which promotes precise handling and stability at higher speeds.

Construction, material, and performance characteristics

The rim is made of a lightweight aluminum alloy, providing an optimal strength-to-weight ratio and good resistance to typical operational loads. The M Star Spoke pattern is designed to effectively dissipate heat from the braking system, which is important during dynamic driving. The Ferric Grey color creates a subtle yet expressive visual effect that complements both light and dark body paints.

The rim belongs to the Wheels category, meaning it is a component that directly influences the vehicle's contact with the road, tire performance, and perceived driving comfort. The appropriate diameter and width of the rim allow for the use of performance-profile tires while maintaining predictable vehicle behavior in corners.

Mounting parameters and compatibility

The bolt pattern and number of mounting holes have been selected according to the standard used in the BMW F30/F31, allowing for direct hub mounting without the need for adapters. The applied offset promotes proper wheel positioning relative to the wheel arch, minimizing the risk of rubbing against suspension or body components when using correctly sized tires. The rim diameter allows for the installation of larger brake discs, which is essential for high-performance braking system configurations.

The aluminum material of the rim also facilitates potential service processes, such as straightening or refinishing the paint surface, which is significant for long-term operation. The product has a dedicated OEM part number and interchangeable numbers, which simplifies verifying compatibility with specific vehicle configurations in BMW catalogs.

Condition, application, and benefits of choosing an OEM rim

The rim is offered as a used component, allowing for the cost-effective restoration of an original wheel set or the replacement of a single damaged rim without the need to purchase a full set. Choosing an original OEM M Star Spoke rim ensures visual consistency with the other wheels and maintains factory driving parameters. It is a practical solution for both post-accident repairs and gradual vehicle appearance upgrades.

By maintaining the factory design and material, the rim works well with vehicle safety systems, such as ABS or traction control, which are calibrated for specific wheel diameters and characteristics. Maintaining the original specification minimizes the risk of unwanted changes in the car's road behavior.

Expanding wheel configuration and technical knowledge

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 additional rims, wheel sets, or alternative rim designs, check out the available parts in the BMW Wheels category.

When selecting a used alloy rim, it is worth paying attention to aspects such as structural condition, potential signs of previous repairs, or the possibility of refinishing the paint coating. A detailed discussion of these issues can be found in the article Used wheels like new: a guide to buying and refurbishing alloy rims, which will help you consciously assess the condition of the rim and plan any necessary service work.