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The IMSA Michelin Pilot Challenge features sports cars from recognized worldwide manufacturers, consisting of GT4 and TCR homologated vehicles. The Michelin Pilot Challenge has two different classes:

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Grand Sport

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The Grand Sport class consists for SRO GT4 homologated cars with engines tuned to produce between 400 and 450 horsepower and can run speeds in excess of 160 mph. Competition is equalized by adjustments to fuel-tank capacities, ride height, power and weight. Eligible cars include the Aston Martin Vantage GT4, Audi R8 GT4, BMW M4 GT4, Chevrolet Camaro GT4.R, Ford Mustang GT4, McLaren 570S GT4, Mercedes-AMG GT GT4, Porsche 718 Cayman GT4 Clubsport and Toyota Supra GT4.

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Touring Car (TCR)

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The Touring Car class consists for WSC TCR homologated cars with engines tuned to produce between 300 and 350 horsepower and can run speeds in excess of 140 mph. Competition is equalized by adjustments to fuel-tank capacities, ride height, power and weight. Eligible cars includes the Alfa Romeo Giulietta Veloce TCR, Audi RS3 LMS DSG, Audi RS3 LMS SEQ, Honda Civic FK7 TCR, Hyundai Elantra N TCR and Hyundai Veloster N TCR.