BMW F20 Front Wheel Alloy Rim 18" M Double Spoke 436 7,5J 7845870

Visual condition of the part

The product shows signs of use visible in the photos.

BMW F20 Front Wheel Alloy Rim 18" M Double Spoke 436 7,5J is an original M-line front alloy rim, designed specifically for BMW F20 series models. The M Double Spoke 436 design ensures a sporty look, high rigidity, and precise handling, while the pre-owned nature of the product offers an attractive price-to-quality ratio. This is a solution for drivers who want to maintain the factory character of their car while ensuring solid driving performance.

Specifications and technical data

• SKU: 7845870-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7845870
• Substitutable numbers: 36117845870, 7845870
• Location on the vehicle: Front
• Rim diameter: 18"
• Rim width: 7.5
• Offset (ET): 45
• Hole diameter: 120
• Number of holes: 5
• Rim material: Aluminium
• Category: Rims

Technical characteristics of the BMW M Double Spoke 436 rim

The rim belongs to the Rims category and is made of a lightweight aluminum alloy, which helps reduce unsprung mass and improve suspension response. It is intended for mounting on the front axle, which has a direct impact on steering precision, stability at higher speeds, and the effectiveness of force transmission to the steering system.

The 18-inch size, combined with the appropriately selected rim width and mounting parameters, allows for the use of tires with a sporty profile, which translates into better grip and more direct contact with the road surface. The bolt pattern and mounting hole diameter are consistent with the BMW standard for this generation, which facilitates trouble-free installation on factory hubs.

Construction, material, and benefits of using aluminum

The aluminum construction of the rim provides a favorable compromise between strength and weight. A lighter rim compared to steel counterparts reduces the inertia of the running gear, which can improve:

• steering system response to rapid changes in direction,
• bump absorption comfort due to lower unsprung mass,
• stability during dynamic maneuvers, especially when combined with tires of the appropriate speed rating.

The M Double Spoke 436 pattern features a multi-spoke, sporty design that harmonizes well with the body lines of the BMW F20. At the same time, the spoke structure is designed to ensure adequate rim rigidity for daily use without excessive weight gain.

Application, installation, and fitment for the BMW F20

The rim was developed as an OEM component for the BMW F20, which means its geometry, mounting parameters, and inner profile are adapted to the factory hubs, brake calipers, and suspension geometry of this series. Thanks to this:

• there is no need to use spacers or non-standard bolts when tires are selected correctly,
• compatibility with factory safety systems, such as ABS or traction control, is maintained,
• the vehicle retains the original handling characteristics intended by the manufacturer.

The pre-owned nature of the rim makes it a sensible choice when replacing a single damaged wheel or when completing a set of wheels for the season. Proper fitment for the BMW F20 limits the risk of issues with vibration, rubbing against wheel arches, or improper seating on the hub, provided that the correct tire parameters are maintained.

Why choose an original BMW alloy rim

An original BMW alloy rim from the M line is a solution that combines aesthetics with functionality. Compared to aftermarket replacements of uncertain origin, the OEM product offers:

• proven strength parameters in accordance with manufacturer standards,
• reliable fitment to the hub and brake system,
• a consistent look with other design elements of the BMW F20.

For drivers who want to manage their budget consciously while maintaining the factory standard, a used OEM rim is a practical compromise. It allows for restoring the full functionality of the running gear after damage to one of the wheels or completing a set of sporty wheels without the need to invest in new components.

More BMW rims and a guide to used rims

If you are planning a comprehensive repair or upgrade of the running gear in your BMW and need other elements from the same group, such as additional rims, wheel sets, or rims of a different size, check out the available parts in the BMW Rims category.

Before purchasing a used alloy rim, it is worth learning the key principles of assessing its condition, regeneration methods, and ways to safely select it for a specific car model – you will find practical tips in the article Used rims like new: a guide to buying and refurbishing alloy rims.