High Quality Content by WIKIPEDIA articles! The 1998 International Sports Racing Series season was the second season of International Sportscar Racing Series (later known as the FIA Sportscar Championship). It was a series of sportscar-style prototypes broken into two classes based on power and weight, called SR1 and SR2, as well as a class of hillclimb-style sportscars, called CN. It began on April 13, 1998 and ended December 6, 1998 after 8 races.