E39 M5 Suspension Upgrade Guide: Coilovers, Sways, and Bushings for Sharp Handling

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The BMW E39 M5 is renowned for its performance and handling, but many enthusiasts seek to enhance its capabilities further. Upgrading the suspension is one of the most effective ways to achieve sharper handling and improved ride quality. In this guide, we will explore the best options for coilovers, sway bars, and bushings to help you get the most out of your E39 M5.

Understanding Suspension Components

Before diving into upgrades, it’s essential to understand the key components of the suspension system and their roles in vehicle dynamics.

  • Coilovers: These combine the shock absorber and spring into a single unit, allowing for adjustable ride height and damping.
  • Sway Bars: These help reduce body roll during cornering by linking the left and right sides of the suspension.
  • Bushings: These are rubber or polyurethane components that connect suspension parts, providing flexibility and reducing noise.

Coilover Upgrades

Coilovers are a popular choice for E39 M5 owners looking to improve handling. They offer adjustability, allowing drivers to fine-tune ride height and damping settings to suit their preferences.

Benefits of Coilovers

Upgrading to coilovers provides several advantages:

  • Adjustable Height: Lowering the car can lower the center of gravity, enhancing handling.
  • Custom Damping: Fine-tune the ride quality and handling characteristics based on driving style.
  • Improved Performance: Better control over suspension travel leads to improved cornering ability.

Several coilover kits are highly recommended for the E39 M5:

  • KW Variant 3: Offers independent compression and rebound adjustment for ultimate control.
  • BC Racing BR Series: A budget-friendly option with adjustable height and damping.
  • H&R Street Performance: Designed for a balance between comfort and performance.

Sway Bar Upgrades

Upgrading the sway bars can significantly enhance your E39 M5’s handling characteristics, especially during aggressive cornering.

Why Upgrade Sway Bars?

Sway bars play a critical role in maintaining stability and reducing body roll. Here are some reasons to consider upgrading:

  • Reduced Body Roll: Stiffer sway bars minimize the lean during turns, improving cornering performance.
  • Better Traction: Improved weight distribution helps maintain traction on all four wheels.
  • Enhanced Feedback: Stiffer sway bars provide better feedback through the steering wheel.

Consider these sway bar options for your E39 M5:

  • H&R Sway Bars: Known for their durability and performance, these bars provide a noticeable improvement in handling.
  • Whiteline Sway Bars: Adjustable options that allow you to customize the stiffness to your liking.
  • StopTech Sway Bars: Designed to reduce body roll while maintaining comfort.

Bushing Upgrades

Bushings are often overlooked, but they can have a significant impact on handling and ride quality. Upgrading to performance bushings can enhance responsiveness and reduce flex.

Benefits of Upgrading Bushings

Here are some benefits of installing upgraded bushings:

  • Improved Precision: Performance bushings reduce play in the suspension, resulting in more direct handling.
  • Enhanced Durability: Polyurethane bushings are often more durable than stock rubber options.
  • Reduced Noise: Many aftermarket bushings are designed to minimize noise and vibration.

For the E39 M5, consider these bushing upgrade options:

  • Powerflex Bushings: Known for their performance and longevity, Powerflex offers a range of options for the E39 M5.
  • Turner Motorsport Bushings: Designed to improve handling without sacrificing ride quality.
  • Uro Parts Bushings: A cost-effective solution with improved performance over stock bushings.

Installation Tips

When upgrading your E39 M5’s suspension, proper installation is crucial for optimal performance. Here are some tips to ensure a successful upgrade:

  • Use Quality Tools: Ensure you have the right tools for the job, including a torque wrench.
  • Follow Manufacturer Instructions: Always refer to the installation guide provided with your components.
  • Check Alignment: After installation, have your alignment checked to ensure proper handling.

Conclusion

Upgrading the suspension on your E39 M5 can transform its handling and performance. By investing in quality coilovers, sway bars, and bushings, you can achieve a sharper, more responsive driving experience. Make sure to follow proper installation procedures and enjoy the enhanced capabilities of your upgraded M5.