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 rear light-alloy wheel designed for the BMW 3 Series E90, E91, and E92 generations. Thanks to precisely selected geometric parameters, it ensures stable handling, predictable vehicle behavior, and a consistent look for the rear axle. It is an attractive choice for drivers looking for a factory solution with solid driving characteristics.

Specifications and technical data

• SKU: 7843841-2
• 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 compatibility with BMW E90, E91, E92

The presented wheel rim was designed as a rear axle component for BMW 3 Series E90, E91, and E92 generation vehicles. The construction, based on BMW's factory specifications, allows for maintaining proper suspension geometry, correct steering system operation, and predictable vehicle reactions during acceleration and braking. Using this rim on the rear axle promotes even load distribution and improves stability at higher speeds.

Aluminum construction and driving characteristics

The rim belongs to the Wheels category and is made of aluminum, which translates into a favorable strength-to-weight ratio. A lighter rim compared to steel solutions reduces unsprung mass, which can positively affect suspension response to bumps and steering precision. The aluminum construction also promotes effective heat dissipation from the braking system, which is important during dynamic driving.

The geometric parameters of the rim – diameter, width, offset, bolt pattern, and center bore – have been selected to work with BMW's factory suspension and brake components. The correct bolt pattern and center bore guarantee proper seating on the hub, and the matched offset helps keep the wheel in an optimal position relative to the wheel arch and suspension components.

Benefits of using an original aluminum wheel rim

Choosing an original aluminum wheel for a BMW brings a number of practical advantages:

• Consistency with factory geometry – maintaining the wheel position relative to the body and suspension as intended by the manufacturer.
• Stable handling – proper rim parameters promote confident vehicle behavior in corners and during load changes.
• Effective brake cooling – the aluminum construction facilitates heat dissipation from discs and pads.
• Aesthetics in line with the BMW line – the rim retains the characteristic, understated look typical for this 3 Series generation.

The product is offered in used condition, which allows for cost savings compared to new parts while maintaining factory specifications and vehicle compatibility.

Wheel selection and technical support

To properly select a rim for a specific version of the BMW E90, E91, or E92, it is worth paying attention to the compatibility of parameters with currently mounted wheels and the vehicle manufacturer's recommendations. It is helpful to compare the technical data of the rim with information in the car's documentation or markings on existing rims. If necessary, you can use the OEM part number and interchangeable numbers, which facilitate the identification of the correct rim model in catalogs.

If you want to organize the process of selecting components by factory numbers and avoid mistakes, use the practical tips contained in the article Guide: how to choose the right car part by VIN and OEM number. You will find a step-by-step action plan and a list of key questions worth asking before purchasing used components.

Regeneration, maintenance, and operation of aluminum wheels

Aluminum wheels, especially in BMW class cars, are often subjected to regeneration and cosmetic treatments to restore their attractive appearance and proper protection against external factors. Proper cleaning, the use of dedicated wheel cleaners, and regular inspection for mechanical damage allow for extending the period of trouble-free operation. In the case of used rims, it is worth considering professional straightening, sandblasting, or painting if the visual condition or minor deformations require it.

If you want to better understand how to assess the condition of light-alloy rims, when it is worth deciding on regeneration, and what to pay attention to when buying rims from the secondary market, read the article Used wheels like new: a guide to buying and regenerating aluminum wheels. This is a practical compendium of knowledge for drivers who want to consciously invest in aluminum wheels.

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