BMW Z4 E89 Silver Alloy Wheel Rim 17" Star Spoke 290 ET:29 8J 6785240

Visual condition of the part

The product shows signs of use visible in the photos.

BMW Z4 E89 Silver Alloy Wheel Rim 17" Star Spoke 290 ET:29 8J is an original, used light-alloy wheel designed specifically for demanding BMW drivers. The silver finish of the rim highlights the dynamic body lines, while the precisely selected geometric parameters ensure stable handling and predictable vehicle behavior. This is a solution for users who want to maintain the factory character of the suspension while improving the vehicle's aesthetics.

Specifications and technical data

• SKU: 6785240-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6785240
• Substitutable numbers: 36116785240, 6785240
• Color: Silver
• Rim diameter: 17"
• Rim width: 8
• Offset (ET): 29
• Hole diameter: 120
• Number of holes: 5
• Rim material: Aluminium
• Category: Rims

Purpose and characteristics of the rim

The presented alloy wheel was developed as a component of the running gear for BMW models, in particular the Z4 E89 series, with an emphasis on maintaining proper suspension geometry. The construction based on a light aluminum alloy reduces unsprung mass, which promotes more precise handling and better reaction to road irregularities. As a result, the rim supports both ride comfort and dynamic, sporty handling.

The rim parameters have been selected to work with the factory steering and suspension settings. The appropriate width, diameter, and offset create a cohesive set that helps maintain the correct wheel position in the wheel arch, without unwanted changes in the operation of bearings or suspension components. This is particularly important for drivers who value predictable vehicle behavior at higher speeds.

Construction and material of the rim

The rim is made of aluminum, which provides a favorable strength-to-weight ratio and corrosion resistance under proper operating conditions. The use of a light alloy translates into faster steering response and more direct driving sensations compared to classic steel wheels. The silver finish gives the rim a timeless, visually neutral character that blends well with most BMW body colors.

The bolt pattern and diameter of the mounting holes have been adapted to typical BMW hubs, which facilitates installation and ensures proper load distribution. The number of mounting points promotes even force distribution during braking and acceleration, and the properly selected offset helps maintain the correct rolling line of the wheel relative to the suspension. Thanks to this, the rim can be used both as a replacement part and for summer or winter wheel configurations.

Performance parameters and benefits of installation

The choice of rim diameter and width allows for the use of popular tire sizes, often used in factory BMW Z4 E89 configurations. This allows for maintaining the handling characteristics intended by the manufacturer, without the need to experiment with non-standard tire dimensions. Stability at higher speeds, predictable cornering behavior, and the appropriate tire contact patch with the road surface are the key advantages of such a selected rim.

An alloy wheel of this class performs well both in daily use and during more dynamic driving. The proper geometry supports the operation of the braking system, providing space for the discs and calipers intended for the given model. The silver surface is easy to keep clean and, with proper care, allows for maintaining an aesthetic appearance for a long time.

Condition, fitment, and service application

The rim is in the Wheels category and is a used item, which makes it an attractive service solution for post-accident repairs, replacing a single damaged rim, or completing a set of seasonal wheels. Choosing an original alloy wheel allows you to maintain the stylistic consistency of the vehicle and avoid fitment problems that may occur with replacements having different parameters.

Due to its technical properties, the rim is suitable for users who expect to maintain factory geometry settings and do not want to interfere with the suspension design. It can be used both as a single replacement element and as part of a larger wheel modernization project, e.g., when switching from steel to alloy wheels to improve appearance and handling characteristics.

Technical support and wheel selection

If you want to better understand how to assess the condition of a light-alloy rim, what to look for when buying used components, and what the possibilities for refreshing them are, it is worth reaching for practical materials. Detailed tips can be found in the article Used wheels like new: a guide to buying and refurbishing alloy wheels, which discusses key aspects of selecting and refurbishing alloy wheels in the context of daily use.

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