3SDM 3.SM3B

3SDM 3.SM3B - Formula Series Forged, Open-Wheel Race Specification

3SDM 3.SM3B - 3-Piece Forged Wheel Built for Formula Car Competition

3SDM 3.SM3B is a 3-piece forged wheel designed for open-wheel formula car competition. The SM3B is engineered around the specific structural demands of formula racing, where unsprung weight directly affects handling response and where wheel failure under racing loads is not an acceptable outcome.

3SDM 3.SM3B Engineering

Built at 3SDM's UK facility using the same 3-piece modular process as the FR road range, the SM3B applies that construction methodology to a formula racing brief. The face, inner barrel, and outer rim are independently CNC-machined from aerospace-grade forged aluminium, then assembled to the precise concentricity tolerances required for high-speed open-wheel use. Component specifications - face thickness, barrel wall, hardware grade - are set to the requirements of the specific formula series and chassis.

3SDM 3.SM3B Design

The SM3B spoke architecture reflects the requirements of formula car packaging - narrow overall width, specific offset ranges, and minimal rotational inertia. The 3-piece format allows face depth, barrel dimensions, and outboard profile to be configured independently, which is essential when matching to the suspension geometry and bodywork clearances of individual formula chassis.

3SDM 3.SM3B Vehicle Fitment: Formula Series, Open-Wheel Racing, Single-Seater

The SM3B is used across UK and European formula series where 3SDM is an approved or preferred supplier, and in single-seater club racing programmes where teams specify wheels by weight and dimension rather than by catalogue. Hodoor Wheels handles the supply and specification process: contact us at [email protected] or via WhatsApp at +44 748 881 8747.

3SDM 3.SM3B - Any Formula, Any Specification

Race specification sizes available to order. Contact Hodoor Wheels to configure your 3SDM 3.SM3B to your exact formula series and chassis requirements.