Mercedes ML W166 Spare Wheel 4,5J ET:40 Tyre Continental R19 155/80 A1644000102

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes ML W166 Spare Wheel 4,5J ET:40 Tyre Continental R19 155/80 is a practical, factory-standard emergency solution designed for safe driving to a service point after a tire failure. The used steel construction ensures durability, while the narrow space-saver tire helps reduce the weight of the set and effectively utilizes trunk space. It is a functional choice for drivers who expect predictable vehicle behavior in emergency situations.

Specifications and technical data

• SKU: A1644000102-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644000102
• Substitutable numbers: A1644000102, A 164 400 01 02
• Rim diameter: 19"
• Rim width: 4.5
• Offset (ET): 40
• Hole diameter: 112
• Number of holes: 5
• Rim material: Steel
• Tire width: 155
• Category: Rims

Purpose and technical specifications

The presented spare wheel has been prepared as an emergency component for the Mercedes ML W166 family, maintaining the parameters specific to this platform. The steel rim with an optimized width works in conjunction with a narrow space-saver tire, allowing for proper lateral stiffness while reducing suspension load. The rim offset has been selected to maintain correct wheel geometry without interfering with the steering system or suspension.

The bolt pattern and center bore diameter are consistent with the hub architecture of this model, enabling direct mounting using factory bolts without the need for adapters. As a result, the wheel can be quickly installed on the road, minimizing downtime and the risk of further vehicle damage.

Construction of the rim and space-saver tire

The rim is made of durable steel, which promotes resistance to point loads and typical operational damage, especially in emergency conditions. The limited-width construction is designed to work with a narrow tire, ensuring stable bead seating and predictable behavior at lower emergency speeds.

A tire with a smaller width than standard tires reduces rolling resistance and the weight of the set, making it easier to handle and install. At the same time, sufficient contact surface with the road is maintained to allow for a safe drive to a service station or destination, in accordance with the vehicle manufacturer's recommendations.

Emergency function and benefits of installation

This type of spare wheel serves as a dedicated space-saver kit, allowing you to continue driving after a puncture or damage to one of your regular tires. The narrow rim and tire take up less space in the trunk, facilitating cargo area organization while ensuring readiness for use in critical situations.

The main benefits of using this solution include:

• the ability to quickly replace a damaged wheel on the road,
• maintaining compatibility with the factory wheel mounting system,
• reduced weight of the set compared to a full-size wheel,
• easier storage in the luggage compartment.

Thanks to the properly selected rim and tire parameters, the set ensures stable vehicle handling at speeds recommended for space-saver wheels, which increases user safety in emergency situations.

Condition, origin, and service application

The spare wheel comes from the Rims segment and is a used item, making it an attractive cost-effective solution while maintaining the functionality required for emergency use. This type of component is particularly useful in vehicles that were not originally equipped with a full-size spare wheel or when the original set has been previously used or damaged.

In terms of service, the wheel can be used as a replacement for the factory space-saver kit, as a supplement to vehicle equipment after bodywork repairs, or as an additional element in cars used for long-distance travel. By maintaining the parameters specific to the ML W166 platform, installation does not require any structural modifications.

If you are planning a comprehensive repair or upgrade of the wheel area in your Mercedes and need other elements from the same group, such as steel rims, alloy rims, or space-saver wheels, check out the available parts in the Mercedes Rims category.

Expert support in choosing rims

When selecting a used spare wheel, it is worth paying attention to the compliance of the rim and tire parameters with the vehicle manufacturer's requirements and the vehicle's usage conditions. For drivers who want to better understand the differences between various types of rims, the process of refreshing them, and regeneration possibilities, a specialized guide will be helpful. Detailed information on purchasing and refurbishing rims can be found in the article Used rims like new: a guide to buying and regenerating alloy rims, which allows for an informed approach to choosing the right solution for your car.