Why Handling Upgrades Matter for the F90 M5

The BMW F90 M5 is a benchmark in the high-performance luxury sedan segment. With its twin-turbo V8, all-wheel drive, and sophisticated chassis, it offers an extraordinary blend of comfort and speed. However, even a car this capable can be refined further. For drivers who push their M5 on back roads or at the track, the factory suspension and braking systems leave room for improvement. Aftermarket upgrades like KW Coilovers, Bilstein PSS10 suspension, and carbon ceramic brakes transform the F90 from a grand tourer into a precision driving machine. This article explores each upgrade in depth, explains how they work together, and provides actionable insights for owners looking to elevate their driving experience.

KW Coilovers – Tailored Suspension for the F90 M5

KW Automotive has earned a stellar reputation for producing high-quality coilover systems that blend performance with everyday usability. For the F90 M5, KW offers several lines, including the popular KW Variant 3 and Variant 4, each designed to address specific needs. The core advantage of KW coilovers lies in their independent adjustability for compression and rebound damping, combined with ride-height adjustment.

Adjustability and Ride Quality

Unlike factory suspension, which is a compromise between comfort and handling, KW coilovers allow the driver to dial in the exact balance they want. The height adjustment gives the car a lower center of gravity, reducing body roll and improving aerodynamics. The separate compression and rebound adjustment (available on Variant 3 and above) lets you fine-tune how the suspension responds to bumps, corners, and braking forces. For daily driving, you can set a softer rebound to absorb road imperfections; for track days, you can stiffen both circuits to minimize weight transfer.

Owners report that even at aggressive settings, KW coilovers maintain surprising compliance. The engineering behind the valves ensures that the damping curve remains progressive, meaning the suspension never feels bouncy or harsh over sharp impacts. This is a key differentiator from cheaper coilovers that compromise ride quality for stiffness.

Installation and Setup Considerations

Installing KW coilovers on the F90 M5 is a straightforward process for a qualified shop, but it’s not a DIY job unless you have experience with German suspension systems. The factory electronic dampers must be coded out or replaced with delete modules, as the KW system is fully mechanical. Professional corner weighting and alignment are essential after installation to ensure the car handles predictably and tires wear evenly. Many tuners recommend lowering the car 0.5 to 1.5 inches, depending on wheel size and intended use.

  • Increased cornering speed: Reduced body roll allows the tires to maintain optimal contact patches.
  • Better feedback: The driver feels more connected to the road, enhancing confidence.
  • Durability: KW’s stainless steel construction and TÜV certification guarantee longevity.

For more technical details, refer to KW Suspensions’ official site for application-specific data.

Bilstein PSS10 – Precision Damping for Every Drive

Bilstein’s PSS10 system is another top-tier choice for the F90 M5. Known for its monotube gas-pressure technology, the PSS10 offers ten distinct damping settings that can be adjusted without tools. This system is designed to deliver a wide operating range, from comfortable cruising to track-focused stiffness.

The 10-Level Adjustment Explained

The “10” in PSS10 refers to the number of damping levels. Setting 1 provides the softest ride, suited for rough roads and long-distance comfort. Setting 10 offers maximum stiffness, ideal for smooth tracks where minimal body movement is critical. The adjustment is made via a simple turn of a knob on the damper body, making it easy to change the car’s character in minutes. This flexibility is a major advantage for owners who use their M5 for both daily commuting and weekend lapping.

Street vs Track Performance

On the street, the PSS10 at settings 3-5 delivers a firm but compliant ride that absorbs expansion joints and potholes without jarring the cabin. There is no floatiness at highway speeds, and the car tracks straight even over undulating pavement. At the track, settings 8-10 transform the M5 into a corner-carving machine. The suspension loads the tires quickly, allowing earlier throttle application and higher exit speeds. The PSS10 also reduces front-end dive during hard braking, which improves stability and driver confidence.

Comparison with KW Coilovers

Choosing between KW and Bilstein often comes down to personal preference and intended use. KW coilovers (especially Variant 4) offer seperate compression/rebound adjustment, which appeals to advanced drivers who want fine control. The PSS10, with its simple 10-click knob, is more user-friendly for those who don’t want to fuss with multiple adjustments. Both systems significantly outperform the factory adaptive dampers in terms of ultimate grip and feedback. Price and availability may also influence decision—consult a trusted retailer like Turner Motorsport for current options.

Carbon Ceramic Brakes – Unmatched Stopping Power

A car that accelerates and corners faster needs brakes that can keep up. The F90 M5 already has strong braking from the factory, but upgrading to carbon ceramic brakes (CCBs) provides a significant leap in heat management and consistency. While some models offer CCBs as a factory option, many owners choose aftermarket kits from Brembo, StopTech, or BMW M Performance for additional weight savings and rotor size.

How Carbon Ceramic Brakes Work

Carbon ceramic discs are made from a composite of carbon fiber and silicon carbide. This material has a much higher thermal threshold than standard iron discs. During repeated hard braking, iron brakes can experience thermal fade as the pads outgas or the rotors warp. CCBs remain stable even at temperatures exceeding 1,000°C. They also resist corrosion and are less susceptible to wear from heat cycles. For track use, this means consistent pedal feel lap after lap.

Weight Savings and Unsprung Mass

One of the most significant benefits of carbon brakes is weight reduction. A full set of CCBs can save up to 20-30 pounds compared to iron brakes on the F90 M5. This reduction is concentrated at the wheels—unsprung and rotational mass—which improves suspension response and steering accuracy. Lighter brakes make the coilovers and dampers more effective, because unsprung weight is easier to control. The result is even sharper turn-in and better traction over bumps.

Longevity and Cost Analysis

Carbon ceramic rotors can last 60,000-100,000 miles under typical driving, far outlasting iron rotors that might need replacement every 30,000 miles or less. However, the initial cost is higher—often $5,000–$8,000 for a quality aftermarket kit. For owners who track their cars frequently, the lifecycle cost can be lower than replacing iron rotors and pads repeatedly. Pad compound also lasts longer because of the disc’s smooth surface and lower wear rates. Check out Brembo’s official site for details on their carbon ceramic offerings for the F90 chassis.

Combining the Upgrades – Creating a Cohesive System

Installing each upgrade individually will improve the F90 M5, but the real magic happens when they work together. A properly tuned chassis with KW or PSS10 suspension, paired with carbon brakes, allows the driver to carry more speed into corners, brake later, and accelerate earlier. The reduced unsprung mass from the brakes amplifies the performance of the coilovers, while the increased damping control keeps the tires planted under aggressive braking.

Balanced Suspension Geometry

After installation, a quality alignment is critical. The lowered ride height changes the car’s roll center and camber curves. A performance alignment with increased negative camber (approx. -2.0° to -2.5° front, -1.5° to -2.0° rear) maximizes cornering grip and tire life. Adding adjustable sway bars and reinforcing the subframe can further refine the setup, but the coilovers and brakes already form a strong foundation.

Tire and Wheel Choices

To fully exploit the upgraded handling and braking, the correct tires are essential. A high-performance summer tire like the Michelin Pilot Sport 4S or Cup 2 R provides the grip needed to match the suspension’s potential. Wider wheels (e.g., 20×10.5 front and 20×11.5 rear) can accommodate larger tire widths, but watch for offset and clearance. Lighter forged wheels also reduce rotational mass, complementing the carbon brake weight savings.

Professional Installation and Setup

We cannot overstate the importance of professional installation. The F90 M5’s complex electronics (including active dampers, steering, and stability control) need to be recalibrated or coded after suspension modifications. A reputable shop experienced with modern BMWs will ensure the system is safe, reliable, and performs as intended. DIY attempts can lead to poor handling, error codes, or even component damage.

Real-World Driving Impressions

Drivers who have installed these upgrades report a dramatic transformation. On track, the car feels lighter, more responsive, and less prone to understeer. The brakes inspire confidence from turn-in to apex, and the suspension communicates the limits clearly. On the street, the ride remains refined enough for daily use—especially with the PSS10 set to a mid-range damping setting. Many owners say it makes the M5 feel like a smaller, more nimble car without sacrificing its GT character.

For community insights and owner reviews, visit the F90 BimmerPost forum, where countless threads document experiences with these exact upgrades.

Conclusion

The F90 M5 is already an exceptional vehicle, but with the right handling upgrades, it can reach an even higher level of driving precision. KW coilovers offer customizable height and damping for those who want fine control; Bilstein PSS10 provides a simpler, yet equally effective, adjustment system for mixed use. Carbon ceramic brakes reduce weight and deliver fade-free stopping power that matches the car’s increased cornering speeds. Together, these upgrades create a symbiotic relationship that transforms the M5 into a track-capable weapon without ruining its daily-driver manners. Whether you’re an experienced track day enthusiast or simply want a more engaging back-road drive, investing in these components will reward you with a more connected, confident, and exhilarating experience behind the wheel.