BC Forged RS40 15-23" Monoblock Forged Wheels

The BC Forged RS40 15-23" is a 1-Piece Forged Monoblock Wheel from the BC Forged RS Series, combining a clean performance-oriented spoke design with an arc'd concave profile, lightweight-focused construction and fully customizable vehicle fitment.

The RS40 features a refined multi-spoke appearance designed around the characteristics of the RS Series. Its spoke arrangement creates a clean and technical visual character, while the curved concave profile gives the wheel face greater depth and a more aggressive stance.

BC Forged manufactures its monoblock wheels from 6061-T6 Forged Aluminum, creating a wheel structure engineered to be strong, stiff and lightweight. The one-piece construction eliminates the separate center and outer barrel used in modular wheels, providing a rigid monoblock platform for performance applications.

The RS40 offers an extensive range of diameters. The JPM product range covers 15-23 inches, while current BC Forged specifications also extend the RS40 to 24 inches. The available 15-23-inch range makes the wheel suitable for applications ranging from compact and classic performance builds to modern sports cars, performance sedans and larger luxury vehicles.

Width selection is equally flexible. Depending on diameter, the RS40 can be configured from compact widths through 13.0J, providing the flexibility required for standard fitments, staggered setups and aggressive wide-body applications. The 18, 19 and 20-inch configurations, for example, are available in widths from 8.5J through 13.0J.

A defining characteristic of the RS Series is its Arc'd Concave Design. Unlike the straight concave profile used by some other BC Forged monoblock families, the RS Series uses a curved concavity that creates a smooth transition from the outer wheel face toward the center. This gives the RS40 a distinctive three-dimensional appearance without relying on an overly complex spoke design.

The RS40 is custom built to order, allowing the wheel specification to be tailored specifically to the vehicle. Custom PCD, offset, vehicle-specific center bore and multiple concavity profiles provide considerably more flexibility than a conventional off-the-shelf wheel.

This custom approach makes the RS40 particularly suitable for staggered and wide-body applications, where front and rear wheel widths, offsets and concavity may need to be configured independently.

The RS40 is also designed to accommodate OEM and aftermarket Big Brake Systems, making it suitable for performance vehicles equipped with upgraded braking hardware. The wheel is TPMS compatible, allowing it to retain compatibility with modern tire-pressure monitoring systems.

For more demanding driving applications, the RS40 can be specified with Anti-Slip Knurled Bead Seats, which are designed to improve tire stability under heavy acceleration, braking and cornering. Additional options include OEM or production center-lock configurations and diamond-cut face finishing where applicable.

The 15-inch configuration offers a compact and motorsport-oriented proportion, while 17-19 inches provide a balanced combination of wheel presence and performance proportions. Larger 20-23-inch configurations create a stronger visual presence and more aggressive stance for modern performance cars and luxury vehicles.

The RS40 also carries JWL and VIA Double Certification, providing an important specification for customers looking for a forged wheel intended for road-going performance applications.

With its combination of 1-Piece Forged Monoblock construction, 6061-T6 aluminum, Arc'd Concave design, extensive sizing and custom fitment, the BC Forged RS40 is suitable for sports cars, performance sedans, European performance vehicles, supercars and wide-body builds.

Wheel specifications should always be selected according to the individual vehicle. Wheel diameter, width, offset, PCD, center bore, brake clearance and tire specification should be confirmed before ordering.

For enthusiasts looking for a custom-built forged monoblock wheel with a distinctive curved concave profile, the BC Forged RS40 offers a strong combination of lightweight-focused engineering, clean performance styling and vehicle-specific fitment.