The spinner hubcap was introduced into the commercial vehicle and passenger automobile market in the 1930s. Automotive designer
Harley Earl expressed a brash philosophy behind his 1950s automobiles that included "glittering spinner hubcaps." During the 1950s and 1960s automobile manufacturers offered simulated wire wheel covers for a look of luxury that featured crisscrossing spokes designed to look like the real wire wheels that were used on vehicles in the 1920s and 1930s. These "spinner-wheel covers" were available on standard as well as featured on custom cars, and
lowriders quickly adapted them for their vehicles. During the early-1960s, the simulated wire wheel covers returned, but with a new look designed to emphasize sportiness with their radiating spokes and center "spinner caps." These classic center spinner caps feature a rigidly mounted propeller-like center element, usually with two or three projecting "blades." They were intended to simulate the knock-off hubs that were used on vintage
racing vehicles and classic
sports cars where a hammer or special wrench was used on the spinner to release or tighten the wheel to the
hub. These spinner hubcaps were most often an optional appearance upgrade to the standard equipment
hubcaps or full wheel covers that attached to stamped steel wheels. Top trim models sometimes included spinner wheel covers as standard equipment to appeal to youthful customers. In the late 1960s, U.S. Federal safety standards banned the use of protruding bar spinners on automobiles. ==Other uses==