Based on the world record nomination from Europe Records Institute (EURI) and Decision No. WK/USA.INDIA/656/2021/No.112, World Records Union (WorldKings) officially declared Continental AG as World's first company to manufacture grooved vehicle tires.
Continental AG, commonly known as Continental, is a German multinational automotive parts manufacturing company specializing in brake systems, interior electronics, automotive safety, powertrain and chassis components, tachographs, tires and other parts for the automotive and transportation industries. Continental is based in Hanover, Lower Saxony, Germany. Continental is the world's fourth-largest tire manufacturer.
Continental was founded in 1871 as a rubber manufacturer, Continental-Caoutchouc und Gutta-Percha Compagnie. In 1898, Continental started development and production of the vehicle tires with plain tread, which was the major success of the brand. In 1904, Continental became the first company in the world to manufacture grooved vehicle tires. In the late 1920s, Continental merged with several other major rubber industry companies to form the largest rubber company in Germany "Continental Gummi-Werke AG".
As with many other German companies during World War II, Continental used slave labor provided by the Nazi Party in their factories in the 1940s at Hannover-Stöcken, Hannover-Limmer, Hannover-Ahlem, and others, all offshoots of the Neuengamme concentration camp.
Continental sells tires for automobiles, motorcycles, and bicycles worldwide under the Continental brand. It also produces and sells other brands with more select distribution such as Viking (limited global presence), General (US/Canada), Gislaved (Canada, Spain, Nordic Markets), Semperit (industrial applications), Euzkadi (Mexico/Latin America) and Barum to serve EU & Russia.
According to en.wikipedia