The series staged the North American Endurance Championship, featuring three of its premier races at Daytona, Watkins Glen, and Indianapolis.

[1] On September 5, 2012, Grand-Am announced that it would be merging the Rolex Sports Car Series with the American Le Mans Series to form a unified road racing championship[2] to be known as United SportsCar Racing,[3] later retitled as the TUDOR United Sports Car Championship.

The final Rolex Sports Car Series race was held on September 28, 2013 at Lime Rock Park.

GTO and GTU would be renamed GTS and GT for 2001 to better match the classes used by the similar American Le Mans Series.

In 2004, the faster GTS class was abandoned in order to provide a larger gap between the Daytona Prototypes and GT cars.

This formula led to the Rolex Sports Car Series having a large number of competitors at most events, mostly due to the ease of use and low cost of the cars in either class while the Grand American Road Racing Association was able to keep the competition equalized.

Started in 2008, Pirelli took over the tire partner role of Grand-Am Rolex Sports Car Series that lasted through 2010 season.