Table of Contents
The BMW E39 M5 is renowned for its performance and handling. However, enthusiasts often seek ways to enhance its cornering capabilities further. Upgrading the differential and suspension can significantly improve the driving experience, allowing for better traction and control during aggressive maneuvers.
Understanding the E39 M5’s Factory Setup
The E39 M5 comes equipped with a powerful V8 engine and a well-balanced chassis. However, the factory suspension and differential settings may not fully exploit the car’s potential. Understanding these components is crucial for making informed upgrades.
Factory Differential Characteristics
The stock differential in the E39 M5 features a 3.15:1 gear ratio. This setup provides a balance between acceleration and top speed but can limit cornering performance. A limited-slip differential (LSD) can help distribute power more effectively to the wheels during turns.
Factory Suspension Overview
The E39 M5’s suspension utilizes a double-wishbone front and multi-link rear setup. While this design offers a comfortable ride, it may not provide the stiffness or adjustability desired by performance-oriented drivers.
Benefits of Upgrading the Differential
Upgrading the differential can lead to improved traction, especially in tight corners. A high-performance LSD allows for better power distribution, reducing wheel spin and enhancing stability.
Types of Differentials
- Clutch-Type LSD: Offers adjustable settings for varying levels of lockup.
- Torque-Biasing LSD: Provides a more seamless engagement and is less maintenance-intensive.
- Helical LSD: Utilizes gears for a smooth operation, ideal for street use.
Choosing the Right Suspension Upgrades
Upgrading the suspension can dramatically alter the E39 M5’s handling characteristics. Options range from coilovers to sway bars, each providing different benefits.
Coilover Systems
Coilovers offer adjustable ride height and damping settings, allowing drivers to customize their setup based on driving style and conditions. This flexibility can lead to improved cornering performance.
Sway Bars
Upgrading sway bars can reduce body roll during cornering, enhancing stability and control. A thicker front sway bar can improve turn-in response, while a rear sway bar can help balance the car during aggressive maneuvers.
Installation Considerations
When upgrading the differential and suspension, proper installation is crucial. Misalignment or incorrect settings can negate the benefits of these upgrades.
Professional vs. DIY Installation
While some enthusiasts may choose to tackle these upgrades themselves, seeking professional help can ensure the job is done correctly. Professionals have the tools and expertise to achieve optimal results.
Tuning and Adjustment
After installation, tuning the suspension and differential settings is essential for achieving the desired handling characteristics. This process may involve adjusting ride height, damping settings, and differential lockup levels.
Testing and Fine-Tuning
Once the upgrades are installed, it’s important to test the car in various conditions. This allows drivers to make necessary adjustments to optimize performance based on their driving preferences.
Conclusion
Upgrading the differential and suspension of the E39 M5 can significantly enhance its cornering capabilities. By understanding the factory setup and choosing the right components, drivers can create a more engaging and responsive driving experience.