Handling and Stability Mods for F90 M5: Upgrading Bushings, Alignment, and Aero for Track Days

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The BMW F90 M5 is a high-performance sports sedan that excels on both the road and the track. To enhance its handling and stability, especially during track days, several modifications can be made. This article will explore the best practices for upgrading bushings, alignment, and aerodynamic components to maximize your F90 M5’s performance.

Upgrading Bushings

One of the most effective ways to improve the handling of your F90 M5 is by upgrading the bushings. Factory bushings are often made from softer materials that can lead to excessive flex and unwanted movement during aggressive driving. By replacing them with stiffer aftermarket options, you can achieve better responsiveness and precision.

  • Control Arm Bushings: Upgrading these bushings can significantly reduce the amount of deflection under load, improving steering response.
  • Subframe Bushings: Stiffer subframe bushings help to maintain alignment during hard cornering, enhancing overall stability.
  • Rear Differential Bushings: These upgrades can minimize unwanted movement of the differential, leading to more predictable handling.

Alignment Adjustments

Proper alignment is crucial for maximizing tire contact with the road and ensuring even tire wear. For track days, a more aggressive alignment can help improve cornering performance.

  • Camber Settings: Increasing negative camber can enhance grip during cornering, but be mindful of tire wear on the street.
  • Toe Settings: A slight toe-out can improve turn-in response, while toe-in can enhance stability on straights.
  • Caster Angle: Adjusting the caster angle can improve steering feel and stability at high speeds.

Aerodynamic Enhancements

Improving the aerodynamics of the F90 M5 can lead to better high-speed stability and cornering performance. Here are some effective modifications:

  • Front Splitter: A well-designed splitter can increase downforce on the front end, improving grip during high-speed cornering.
  • Rear Spoiler: An adjustable rear spoiler allows you to fine-tune downforce based on track conditions.
  • Side Skirts: These can help to manage airflow and reduce drag, contributing to overall stability.

Conclusion

Upgrading the bushings, adjusting the alignment, and enhancing the aerodynamics of your F90 M5 can significantly improve its handling and stability during track days. By implementing these modifications, you can enjoy a more responsive and engaging driving experience, allowing you to push your M5 to its limits.