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The Pirelli World Challenge is a North American auto racing series that is managed by WC Vision and sanctioned by the Sports Car Club of America (SCCA). The World Challenge series was born in 1990, and celebrated its 25th anniversary season in 2014. The series consists of seven driver classifications and six classes of vehicles: Grand Touring (GT), GT Cup (new for 2015 - for Porsche 991 Cup cars), GTS, Touring Car (TC), "Touring Car B-spec" (TCB) since 2012, and "Touring Car A" (TCA), new in 2014. In 2014, a new GTA driver classification was established for professional drivers that do not make their living primarily from racing. The series typically races alongside the IndyCar Series on race event weekends. ==History== The SCCA created a "showroom stock" class for amateur club racing in 1972. In 1984, following the success of the Longest Day of Nelson〔(【引用サイトリンク】url=http://www.nelsonledges.com/LONGESTDAY.aspx )〕 and another 24-hour race at Mid-Ohio, the SCCA combined existing races into a manufacturer's championship. For 1985, the series became a 6-race professional championship with sponsorship from ''Playboy'' magazine. Escort radar detectors sponsored the series from 1986 until 1991.〔 In 1990, the series was officially named World Challenge and was restructured to adopt rules similar to the European Group A for homologated production cars. The higher-cost "sports" classes were dropped after 1996, leaving the class format as it would stand until 2010. Speed TV network began sponsoring the series in 1999. With fields growing, the series began separate races for the GT and Touring classes in 2000, which would remain until 2010. In 2010, the series moved away from the partnership with SPEED, and signed a broadcast partnership with Versus (now NBCSN) for coverage. The series moved existing touring cars into a new GTS class, while changing the rules for the touring car class to reduce costs and keep cars closer to stock. With the SpeedVision television contract, the World Challenge eventually succeeded Trans Am as the SCCA's premier series. In July 2008, the World Challenge series was purchased by WC Vision, a group of investors. The Sports Car Club of America remains the sanctioning partner of the series. Starting with the 2011 season, the series signed a partnership with Pirelli and the leading tire manufacturer became the official tire supplier and title sponsor of the series. In 2014, the Pirelli World Challenge established a GT-A classification similar to the FIA's bronze category. For 2015, the series will establish GT Cup, featuring Porsche 991 Cup Cars that will run as part of the overall GT Class races. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pirelli World Challenge」の詳細全文を読む スポンサード リンク
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