BMW E90 E91 Ferricgrey Rear Alloy Wheel Rim 18" ET:37 8.5J M Spider Spoke 193

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E90 E91 Ferricgrey Rear Alloy Wheel Rim 18" ET:37 8.5J M Spider Spoke 193 is an original M-line alloy wheel designed for the rear axle of the 3 Series E90/E91 models. Engineered for precise handling and stability, it provides a solid foundation for building a cohesive, dynamic wheel set for your BMW. With its Spider Spoke design, the wheel delivers a distinctive, sporty look consistent with the factory M styling.

Specifications and technical data

• SKU: 7843841-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7843841
• Substitutable numbers: 7843841, 36117843841
• Location on the vehicle: Rear
• Rim diameter: 18"
• Rim width: 8.5
• Offset (ET): 37
• Hole diameter: 120
• Number of holes: 5
• Rim material: Aluminium
• Category: Rims

Purpose and BMW fitment

This rear alloy wheel has been developed specifically for the drive axle of the BMW 3 Series E90/E91, which ensures proper load distribution and predictable vehicle behavior in corners. The wheel's construction is optimized for the suspension geometry of these models, maintaining factory handling characteristics and proper interaction with the braking system.

Its original BMW origin means compliance with factory quality standards, as well as a perfect fit for the hub, mounting bolts, and suspension components. This is a particularly beneficial solution when you want to maintain the technical and visual consistency of the entire wheel set.

M Spider Spoke construction and driving performance

The distinctive M Spider Spoke pattern is a multi-spoke design that combines sporty styling with functionality. The arrangement of the spokes promotes effective heat dissipation from the area around the brake discs, which is important during dynamic driving and intensive use of the braking system.

The aluminum material of the rim provides a favorable strength-to-weight ratio, which helps reduce unsprung mass and improves suspension response to road irregularities. Properly selected width, diameter, and offset parameters promote stability at higher speeds and precise torque transfer to the road surface.

Mounting parameters and compatibility

The rim belongs to the Wheels category and is designed as a rear-axle component, with the bolt pattern and center bore diameter matched to BMW standards for this generation. The number of mounting points and their layout guarantee a secure fit on the hub, while the properly selected offset allows for maintaining the correct wheel arch line without interfering with the bodywork.

Thanks to the use of aluminum, the rim is resistant to typical operational loads, while also allowing for potential refinishing of the surface and paintwork if the user wishes to refresh its appearance or match the finish to an individual visual concept for the car.

Practical application and benefits of choosing OEM wheels

Choosing an original BMW rear wheel from the M line is a beneficial solution both when repairing after mechanical damage and when assembling a wheel set with a sportier character. Maintaining factory mounting parameters facilitates the installation process and minimizes the risk of improper wheel seating or unwanted vibrations.

An OEM alloy wheel also means predictable behavior during long-term use – from resistance to material fatigue to compatibility with factory sensors and chassis components. This is especially important when you want to maintain the stock handling characteristics while enjoying the attractive M Spider Spoke styling.

How to consciously buy used alloy wheels

When choosing a used wheel, it is worth paying attention to the surface condition, any signs of previous repairs, and the rim geometry. It may be helpful to familiarize yourself with practical tips on assessing wear, regeneration methods, and safe mounting principles. A detailed discussion of these issues can be found in the article Used wheels like new: a guide to buying and refurbishing alloy wheels, which will allow you to better plan the purchase and operation of wheels for your car.

Expanding the BMW styling package

If you are interested in a broader context of modifying BMW models in a sporty direction, including the differences between standard components and the M and M Performance lines, it is worth checking out the material BMW M Performance: what is the difference between BMW M parts and standard ones?. This will allow you to better select subsequent visual and technical components for the character of your car.

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