Light alloy wheels offer many advantages over steel wheels, particularly with regard to styling. A wheel, however, is a safety critical component and performs an arduous engineering function. The performance and safety of a wheel can be enhanced by casting in light alloy, a fact well known to racing car designers. To ensure that advantages of light alloy wheels are not marred by poor reliability requires scrupulous control of all aspects of production. GKN has evolved an approach that ensures this control by direct involvement at all stages of manufacture in its modern integrated-wheel facility.