<P> A Lego tire is a rubber tire manufactured by the toy building block company The Lego Group for use on vehicles within their Lego building sets . The tires are available in a range of sizes depending on the application . Lego first began manufacturing tires in 1962 and included them in what would become their most popular set at the time . Previously, the only tire options for Lego users were either purchasing complete car kits from Lego, or building their own tires out of existing Lego blocks . Lego produced 318 million tires in 2011, making them the world's largest tire manufacturer by number of units produced . </P> <P> Before Lego began manufacturing its own tires, it made "pre-molded mini cars" in the early 1950s, and users sometimes made their own, fashioning eight Lego bricks into a wheel . In 1962 tires were first made available as part of "set #400". The set went on to become the most popular of Lego's line of products . The smallest Lego tire was produced in 1969 and was available in two sets that year . At 107 millimetres (4.2 inches) in diameter, the largest tire produced became available in 2000 . </P>

Who manufactures the most tires in the world