The Grand-Am Road Racing Association was established in 2000 to counteract the downward trend in road racing observed in the 90s. By deliberately restricting the technical development of the vehicles and putting in place a set of strict regulations, the organisers attempted to keep down the costs of competing the teams. With constant growth of the series and a level playing field, the Grand-Am has become one of the most important sportscar race series in North America over the past seasons. The Grand-Am has been part of the NASCAR organisation, by far the most important race series in North America, since 2008.

The Grand-Am Series is held with 2 different vehicle categories: Daytona prototypes and GT vehicles. The races are run both on traditional circuits such as Daytona, Montreal or Watkins Glen as well as on modern circuits such as the Barber Motorsport Park, Road to Atlanta, Belle Isle Park or Indianapolis Motor Speedway.

The season traditionally starts with the 24 Hours of Daytona. With its 12 corners, the 5.729 kilometre Daytona International Speedway is one of the most famous race tracks in the USA. The 24 hour race is contested on a combination of the oval with banked corners and the infield.

Most of the races are held over a distance of 2 hrs 45 mins.. Exception: 24 Hours of Daytona- as well as Watkins Glen in June (6-hour race).

Porsche started with a convincing triple triumph in GT-class at the 50th running of the 24 Hours of Daytona into the new season of 2012. Victory went to Porsche customer Team Magnus Racing in the Porsche 911 GT3 Cup driven by John Potter, Andy Lally, Rene Rast, and Porsche factory driver Richard Lietz. For Porsche as the most successful manufacturer in the history of this race, this marked the 74rd class win.

All 12 races are held in the USA.