The steering wheel is an integral part of the restraint system as the driver airbag is located in the hub of the steering wheel and the performance of the airbag in a crash will depend on the steering wheel design.
Steering wheels have to meet a broad variety of requirements in term of both safety and styling.
The base of a steering consist is the skeleton, made out of a strong metal such as magnesium, aluminum or steel. The skeleton is covered by a highly durable, soft, foam material, usually Polyurethane (PU). Injection molding is used to apply the PU on the skeleton.