Since 1999, the American Le Mans Series (ALMS) has offered participants in the legendary 24-hour race in Le Mans the opportunity to compete in an entire race season. The rules for the ALMS, which takes place under the auspices of the IMSA (International Motor Sports Association), are therefore based on those of the classic long-distance race: two prototype and two GT classes participate simultaneously in one and the same race. The spectators get to see four races in one - including all the resulting overtaking maneuvers and battles for position. This makes the ALMS a very accessible and attractive race series for fans, as the starter field includes not only many well-known manufacturers but also big names from the world of motor racing. From the beginning, Porsche has been very successful in the ALMS: the first nine seasons (1999 - 2007) saw Porsche claim the GT/GT2 manufacturer's title seven times, on six occasions Porsche customer teams were in the top position and seven driver's titles have gone to a Porsche driver. With 83 class victories and nine overall wins, Porsche is the leading manufacturer across all classes.
Porsche made a return to prototype racing with the RS Spyder, the first Porsche developed exclusively for the race track since the successful 911 GT1 in 1998. In its first full race season, the two RS Spyders, prepared by the Penske Motorsport, won seven of the ten races it entered in 2006, and Sascha Maassen and Lucas Luhr won the drivers title for Porsche and Penske. For 2007, Dyson Racing joined Penske with two additional RS Spyders, with Porsche sweeping the podium on several occasions while winning eight of the 12 races overall, and repeating as LMP2 champions. These four RS Spyders are back for 2008, along with three additional cars for the European Le Mans Series.
In previous years, the 911 GT3 RSR - the ultimate race car based on the Porsche 911 - has been the most successful vehicle in the GT2 class. The 2008 season will once again see numerous private Porsche teams preparing this car, as they strive to continue the success story in the face of stronger competition.
The purpose-built race cars, based on the new 2008 Porsche 911 GT3 body style, have sealed engines and transmissions, providing for close racing where the driver's talents are highlighted. Porsche Motorsport North America provides technical support for the series with personnel, parts and expertise both away from and at the track. The ten-race series, which runs at American Le Mans Series events plus a special two-race weekend during the Formula 1 weekend in Montreal, features amateur drivers.