Handling Upgrades for the E39 M5: Cross Drilled Rotors, Lsd, and Polyurethane Bushings

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The BMW E39 M5 is a legendary performance sedan known for its balance of power and handling. To enhance its capabilities further, many owners consider upgrades like cross drilled rotors, limited-slip differentials (LSD), and polyurethane bushings. This article will explore these upgrades, their benefits, and considerations for installation.

Cross Drilled Rotors

Cross drilled rotors are a popular upgrade for the E39 M5, providing improved braking performance. These rotors feature holes drilled into their surface, which help dissipate heat and reduce brake fade during aggressive driving.

Benefits of Cross Drilled Rotors

  • Improved Heat Dissipation: The holes allow for better airflow, helping to keep the rotors cooler.
  • Reduced Brake Fade: Enhanced cooling leads to less brake fade during high-performance situations.
  • Better Wet Weather Performance: The holes help channel water away, improving grip in wet conditions.

Considerations for Installation

When installing cross drilled rotors, consider the following:

  • Brake Pad Compatibility: Ensure that the brake pads used are compatible with cross drilled rotors.
  • Quality of Rotors: Choose high-quality rotors to avoid cracking and premature wear.
  • Professional Installation: If unsure, consider professional installation for optimal performance.

Limited-Slip Differential (LSD)

A limited-slip differential (LSD) is another significant upgrade for the E39 M5. It allows for better power distribution to the wheels, improving traction and handling, particularly during cornering.

Benefits of LSD

  • Enhanced Traction: LSD helps to distribute power to the wheel with the most grip, reducing wheel spin.
  • Improved Cornering Performance: Better traction in corners leads to improved handling dynamics.
  • Increased Stability: LSD contributes to overall vehicle stability during aggressive driving.

Considerations for Installation

When considering an LSD upgrade, keep in mind:

  • Type of LSD: Choose between clutch-type, Torsen, or viscous LSD based on driving style.
  • Professional Installation: Proper installation is crucial for performance and reliability.
  • Compatibility: Ensure the LSD is compatible with the E39 M5’s drivetrain.

Polyurethane Bushings

Upgrading to polyurethane bushings can significantly improve the handling of the E39 M5. These bushings provide a firmer connection between the chassis and suspension components, enhancing responsiveness and feedback.

Benefits of Polyurethane Bushings

  • Increased Handling Precision: Polyurethane bushings reduce flex, allowing for more precise steering input.
  • Improved Durability: They are more resistant to wear and tear compared to rubber bushings.
  • Enhanced Road Feedback: Drivers can feel the road better, leading to a more connected driving experience.

Considerations for Installation

Before installing polyurethane bushings, consider the following:

  • Ride Comfort: Polyurethane bushings may increase road noise and vibrations.
  • Professional Installation: Proper installation is key to avoid issues with alignment and handling.
  • Compatibility: Ensure the bushings are specifically designed for the E39 M5.

In conclusion, upgrading the E39 M5 with cross drilled rotors, a limited-slip differential, and polyurethane bushings can significantly enhance its performance and handling capabilities. Each upgrade offers unique benefits that can improve the driving experience, making the E39 M5 an even more thrilling vehicle on the road.