EP:12A BMW Dynamic ESA Explained, Damping Modes, Riding Modes, Rear Preload & DDC, how do they work

Summary

This video delves into BMW's Dynamic ESA (Electronic Suspension Adjustment) system, focusing on the rear suspension preload settings and their impact on ride quality. It explains the three main settings—Minimum, Auto, and Maximum—detailing when to use each for various riding conditions, such as solo rides, pillion passengers, or off-road adventures. The Auto setting, in particular, is praised for its self-adjusting features, ensuring optimal suspension levels based on rider weight and gear. Viewers are encouraged to experiment with preload adjustments for improved comfort and handling, with a special emphasis on how these settings interact with damping adjustments for a seamless riding experience.

Takeaways

• 😀 The Dynamic ESA system in BMW motorcycles adjusts suspension based on various sensors, including a six-axis IMU, creating optimal riding conditions.
• 😀 Handlebar controls on BMW motorcycles allow the rider to adjust the suspension preload (Minimum, Auto, Maximum) and riding modes.
• 😀 The Dynamic ESA system works across all BMW bikes equipped with it, not just the GS, with consistent principles of operation.
• 😀 The rear suspension preload (rider sag) is crucial in setting up the suspension to ensure proper comfort and handling.
• 😀 The spring preload settings of Minimum, Auto, and Maximum directly affect the ride feel and handling of the bike, including when riding off-road or with a pillion.
• 😀 Minimum preload lowers the back of the bike, making it easier to mount, especially for shorter pillions or when navigating obstacles.
• 😀 The Auto setting in Dynamic ESA automatically adjusts the rear suspension preload based on the rider’s weight and luggage, providing optimal comfort and stability.
• 😀 Maximum preload raises the rear suspension for additional ground clearance, making it ideal for off-road riding or heavy loads.
• 😀 The system adapts to temperature conditions; colder weather may cause longer adjustment times for suspension preload settings.
• 😀 Dynamic ESA also automatically adjusts damping settings (rebound damping) to maintain bike stability, providing seamless integration with suspension preload adjustments.

Q & A

What is Dynamic ESA and how does it work?

Dynamic ESA (Electronic Suspension Adjustment) is a system designed to automatically adjust the suspension settings of a motorcycle based on various factors such as load, riding conditions, and bike posture. It works by using sensors and algorithms, with input from an Inertial Measurement Unit (IMU) on newer models, to optimize the spring preload and damping settings for different riding scenarios.

What is the role of the IMU in the Dynamic ESA system?

The IMU (Inertial Measurement Unit) plays a crucial role in the Dynamic ESA system by measuring the bike's movement in six axes. This data helps BMW generate algorithms to adjust the suspension settings accurately, ensuring a smoother and more controlled ride.

What are the different preload settings available on the GS with Dynamic ESA?

The GS with Dynamic ESA offers three preload settings: Minimum, Maximum, and Auto. These settings control the amount of preload on the rear spring, affecting the height of the bike and its responsiveness to various conditions.

How does the Minimum preload setting affect the bike's handling?

The Minimum preload setting softens the rear suspension, lowering the bike's rear end closer to the ground. This setting can be useful for situations like getting on or off the bike, making it easier for shorter riders or passengers to mount the bike.

When should you use the Minimum preload setting?

The Minimum preload setting is ideal when you need to lower the rear of the bike, such as when getting on or off the bike in tight spaces or for shorter passengers. It's also useful when maneuvering the bike in confined areas, like moving it in and out of a garage.

What is the difference between the Minimum and Auto preload settings?

The Auto preload setting is designed to automatically adjust the spring preload based on the rider's weight and any additional load (such as luggage or a pillion). In contrast, the Minimum setting manually lowers the bike's rear end, providing more comfort for specific tasks, but does not adjust based on weight or conditions.

How does the bike adjust when changing from Minimum to Auto or Maximum preload settings?

When switching from Minimum to Auto or Maximum preload settings, the bike adjusts the spring compression. The transition to Auto is automatic, but it may take some time for the suspension to self-level, especially in colder temperatures. The bike will feel softer initially until it adjusts to the proper preload level.

Why is the Auto preload setting considered the most practical for daily riding?

The Auto preload setting is considered the most practical for daily riding because it automatically adjusts to the optimal spring preload based on the rider's weight and any additional load. This ensures the best ride quality without needing manual adjustments, making it ideal for various riding conditions.

What are the main benefits of using the Maximum preload setting?

The Maximum preload setting is beneficial for off-road riders who need more ground clearance, as it raises the bike's rear end. It can also be used by heavier riders or those carrying a pillion, providing a firmer ride and better suspension handling under heavy loads.

How does changing preload settings affect the bike's damping settings?

When preload settings are adjusted on Dynamic ESA bikes, the computer automatically changes the damping settings as well. The bike's suspension rebound speed is adjusted to complement the new preload, ensuring the suspension behaves appropriately for the new settings, without needing manual damping adjustments.