In GRAND-AM Road Racing, the Rolex Sports Car Series features Daytona Prototypes and production-based GT cars running simultaneously. The Daytona Prototype (DP) category has revolutionized sports car racing with ample battles at the front of the field and close finishes in practically every race. Like the DP class that has redefined prototype racing, the GT class has done the same for high-performance, production-based sports car racing.

Like the Rolex Series, the Continental Tire Sports Car Challenge races two classes at the same time: Grand Sport (GS) and Street Tuner (ST) and features sports cars manufactured from around the world, straight from the showroom, racing with only minor safety modifications.