Grassroots Motorsports is the official magazine of the Pirelli World Challenge series

World Challenge Central at Grassroots Motorsports.com

Welcome to the Grassroots Motorsports Inside Look


As the official media partners of the Pirelli World Challenge series, we're glad to present our World Challenge Inside Look video series.
Look for more episodes as the season progresses.

World Challenge Inside Look Episode 4—Looking at Suspension


World Challenge Inside Look Episode 3—From the Street to Slicks with Pirelli


World Challenge Inside Look Episode 2— Safety at Speed


World Challenge Inside Look Episode 1— Comparing the three classes in Pirelli World Challenge

Bonus- Five questions with Pirelli World Challenge GT class champion Randy Pobst


With three classes running simultaneously in every Pirelli World Challenge event, it helps to know who's racing who. For our first episode, we look at the three classes in World Challenge and what separates them from one another.





World Challenge Car Facts

Classes Grand Touring (GT): The allowed body styles within this class are coupe, sedan and convertible. The cars permitted in GT are typically sold in the market as "sports" cars, "sport-touring" cars, or performance versions of "luxury" cars. Forced induction is permitted on cars that come equipped with forced induction stock, or on cars that SCCA Pro Racing has determined need help reaching the target horsepower range. Power output ranges from 425-525 hp. Weight varies depending on power output and tire size. All of the vehicles in GT are rear-wheel drive or all-wheel drive. Grand Touring Sport (GTS): Includes many cars eligible for the GT class, but at a preparation level much closer to that of a stock vehicle. Additionally, many FIA GT4 class cars are eligible as well as cars built to the 2008/2009-spec Touring Car regulations. Touring Car (TC): The allowed body styles in this class are coupes, hatchbacks, wagons or sedans. The cars permitted in TC are typically sold as "compact" cars, or "touring" cars. Eligible cars must have realistic seating for four (4) adults. Power output ranges from 180 to 200 hp. Weight varies depending on the power output of the individual drivetrain configurations. Front-wheel, rear-wheel and all-wheel drive configurations are permitted. Forced induction may be allowed on cars that have forced induction systems available from the manufacturer which do not void the factory warranties.

Click here to see a recent article from Grassroots Motorsports magazine that goes into further detail on the World Challenge class structure. We're excited to bring you more coverage from the GRM perspective throughout the 2011 Season.

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