The 2008 Rolex Sports Car Series season was the ninth season of the Grand-Am Rolex Sports Car Series presented by Crown Royal Cask No. 16. The 14-race championship for Daytona Prototypes (DP) and 13-race championship for Grand Touring (GT) cars began January 26, 2008 and concluded on September 20, 2008. New Jersey Motorsports Park replaced Iowa Speedway. At 15 races, it was the longest Rolex Sports Car Series season.