2009 BMW M6 Coupe Dinan S2

Original-owner, 11k-mile M6 coupe in Black Sapphire Metallic over black Merino leather, with a six-speed manual and Dinan S2 upgrades.

Specifications & provenance

Year: 2009

Make / Model: BMW M6 Coupe Dinan S2

VIN: WBSEH935X9CY25090

Exterior: Black Sapphire Metallic

Interior: Black Merino leather

Mileage: 11,000 miles at auction

Engine: 5.0-liter S85 V10 with Dinan S2 upgrades

Transmission: Six-speed manual

Drivetrain: Rear-wheel drive

Differential: Variable M Differential Lock; 3.91:1

Suspension: Dinan Stage 2 with Electronic Damping Control

Wheels: 19-inch Style 167M

Ownership: Original owner at the 2025 auction

The Powerplant

What distinguishes this M6 is both its low mileage and single-owner history, along with its well-chosen performance enhancements from respected BMW tuner Dinan. The car features the S85B50 5.0-liter V10 engine, enhanced with a Dinan ECU tune, high-flow throttle bodies, carbon-fiber intakes, an underdrive crankshaft pulley kit, and a performance exhaust system. The powertrain delivers power through a six-speed manual transmission and a Variable M Differential Lock with a 3.91:1 ratio—a relatively rare combination in BMW's modern performance lineup.

Performance and Specifications

The vehicle's chassis has been similarly enhanced with Dinan's Stage 2 suspension package, complementing the factory Electronic Damping Control and Dynamic Stability Control systems. Carbon-fiber front and rear bracing elements further heighten the car's structural rigidity and handling precision. The staggered-width 19-inch Style 167M alloy wheels wear fresh Michelin tires that were mounted in January 2025, while the braking system features massive four-wheel vented and cross-drilled rotors measuring 14.7 inches up front and 14.6 inches at the rear. In preparation for sale, the car received comprehensive servicing including fresh brake fluid, a coolant flush, and replacement of both differential and transmission fluids.

Interior & Details

The cabin presents in exemplary condition, with heated power-adjustable front sport seats upholstered in premium black Merino leather that extends to the dashboard, center console, and door panel inserts. Carbon-fiber trim elements provide a purposeful aesthetic throughout the interior, while Dinan aluminum pedals offer both improved feel and visual enhancement. Additional amenities include a heated multifunction steering wheel with tri-color stitching, iDrive with navigation, automatic climate control, and a discreetly integrated radar detector. The digital odometer confirms the car's remarkably low 11,000-mile lifetime usage.

Documentation & Heritage

This $90,501 sale represents a significant milestone in the BMW collector market, showing the premium that low-mileage, tastefully modified examples of modern BMW M cars can command. The E63/E64 M6 is valued by enthusiasts as one of the last naturally aspirated, high-revving BMW M cars, featuring the S85 V10 engine and a driver-focused experience that has become less common in newer performance vehicles. The manual transmission—chosen by only a small percentage of original buyers—adds to this example's appeal and collectibility.

The sale included a clean Carfax report confirming the car's history (VIN: WBSEH935X9CY25090) and complete documentation. Worth noting is how the modifications enhance the car's character without compromising its fundamental qualities—a balance not always achieved with aftermarket modifications. Dinan's reputation for engineering quality and BMW-complementary design has likely contributed to the strong value this vehicle achieved at auction.