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| Country | North America |
|---|---|
| Inaugural season | 2000 |
| Folded | 2013 |
| Prototype Classes | DP |
| GT Classes | GT, GX |
| Tyre suppliers | Continental |
| Last Drivers' champion | DP:Max Angelelli,Jordan Taylor GT:Alessandro Balzan GX: Jim Norman |
| Last Makes' champion | DP:Chevrolet/Riley GT:Ferrari GX:Mazda |
| Last Teams' champion | DP:Chip Ganassi Racing GT: Scuderia Corsa GX: BGB Motorsports |
| Official website | http://www.grand-am.com |
TheRolex Sports Car Series was the premier series run by theGrand American Road Racing Association. It was a North American-basedsports car series founded in 2000 under the nameGrand American Road Racing Championship to replace the failedUnited States Road Racing Championship.Rolex took over as series sponsor in 2002.
It ran a mixture of classes ofsports prototypes andGrand Touring-style cars. In 2003, the series debuted their custom prototype chassis, known asDaytona Prototypes, named after their premiere event, theRolex 24 at Daytona.
The series staged theNorth American Endurance Championship, featuring three of its premier races atDaytona,Watkins Glen, andIndianapolis.[1]
On September 5, 2012, Grand-Am announced that it would be merging the Rolex Sports Car Series with theAmerican Le Mans Series to form a unified road racing championship[2] to be known asUnited 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.[4]
Following the failure of theUnited States Road Racing Championship in 1999, the new Grand American Road Racing Association announced their intentions to adopt a format similar to the one used in the USRRC, centering on the24 Hours of Daytona. This series was seen as an alternative to the formerIMSA GT Championship, which had since been replaced by theAmerican Le Mans Series in 1999. The new series would run two classes of Sports Racing Prototypes identical to the rules used in the newFIA Sportscar Championship in Europe, whileGrand Touring-style cars would consist of three classes: GTO for larger production-based race cars, GTU for smaller production-based race cars, and AGT for Americantube frame cars. The league would also acquire theSix Hours of Watkins Glen, giving the league a second endurance race alongside the Rolex 24 at Daytona to compete with the ALMS'12 Hours of Sebring andPetit Le Mans. GTO and GTU would be renamed GTS and GT for 2001 to better match the classes used by the similarAmerican Le Mans Series.
2003 would see the series go through a radical change, asDaytona Prototypes debuted for the first time to replace both of the Sports Racing Prototype classes. Although SRPs would be allowed to continue until the end of 2003, few were seen while the Daytona Prototypes took over the series. The American GT class was also dissolved with the cars being placed into the similar GTS class.
In 2004, the faster GTS class was abandoned in order to provide a larger gap between the Daytona Prototypes and GT cars. The GTS cars were as fast (if not faster) than the Daytona Prototypes. This meant that the GT class was now the top tier, being joined by the Super Grand Sport (SGS) class moved up from theGrand Am Cup series. This was further streamlined in 2005 with all Grand Touring-style cars being in a single GT class.
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.
With such high car counts, Grand-Am has had to split GT and DP races at shorter tracks where it is not feasible to put 50 cars on the track at one instance. In each case, the GT cars race on Saturday, and the DP cars race on Sunday. This split format allows drivers to run both races. Each race is the same distance, as it would be if the two classes were running together. This did however make GT races slightly longer than combined events, since GT cars would likely finish several laps behind the winning prototype and thus not cover the full distance.
When the GT and DP races were combined, the two classes would use a motorcycle racing-style "wave start," a concept from Roger Edmonson, who had been in motorcycle racing before organising the Grand American series with the France family. In this case, the DP cars would take the green flag first, followed, usually 20–30 seconds later (depending on track length) by the GT cars. By starting the cars separately, the organisers hoped for safer starts by having the two classes of cars race separately.
Due to the series' affiliation withNASCAR, manySprint Cup Series drivers occasionally participated in Rolex Series races, particularly the 24 Hours of Daytona.
The tire manufacturers war in Rolex Sports Car Series began in the 2000 season withMichelin,Dunlop,Goodyear,Avon,Pirelli,Hoosier andYokohama were tire suppliers until 2001 season. Starting in 2002 season, the tire manufacturers war were reduced to just two suppliers asDunlop andGoodyear were only Grand-Am Rolex Sports Car Series tire manufacturers until 2004 season. As the tire manufacturers war were ended after 2004 season, in 2005Hoosier Racing Tire took over as official single tire partner of Grand-Am Rolex Sports Car Series that lasted through 2007 season. Started in 2008,Pirelli took over the tire partner role of Grand-Am Rolex Sports Car Series that lasted through 2010 season. AsPirelli confirmed of Grand-Am Rolex Sports Car Series departure toFormula One,GP2 Asia Series andGP2 Series in 2011 after theFIA World Motor Sport Council meeting verdict inGeneva,Switzerland on June 24, 2010,[5]Continental took over the official tire partner role until the series merged intoWeatherTech SportsCar Championship in 2014.[6]
| Season | Classes | ||||
|---|---|---|---|---|---|
| 2000 | SR | SRII | GTO | GTU | AGT |
 James Weaver |  Ryan Hampton Larry Oberto | Terry Borcheller Ron Johnson | Mike Fitzgerald | Doug Mills | |
| 2001 | SRP | SRPII | GTS | GT | AGT |
| James Weaver | Andy Lally | Chris Bingham | Darren Law | Craig Conway Doug Goad | |
| 2002 |  Didier Theys | Terry Borcheller | Chris Bingham | Bill Auberlen Cort Wagner | Kerry Hitt |
| 2003 | DP | SRPII | GTS | GT | |
| Terry Borcheller | Steve Marshall | Tommy Riggins Dave Machavern | Cort Wagner Brent Martini | ||
| 2004 | DP | GT | SGS | ||
 Max PapisScott Pruett | Bill Auberlen | Andy Lally Marc Bunting | |||
| 2005 | DP | GT | |||
Max Angelelli Wayne Taylor | Craig Stanton | ||||
| 2006 |  Jörg Bergmeister | Andy Lally Marc Bunting | |||
| 2007 | Alex GurneyJon Fogarty | Dirk Werner | |||
| 2008 | Scott Pruett Memo Rojas | Paul Edwards Kelly Collins | |||
| 2009 | Alex GurneyJon Fogarty | Leh KeenDirk Werner | |||
| 2010 | Scott PruettMemo Rojas | Emil Assentato Jeff Segal | |||
| 2011 | Scott PruettMemo Rojas | Leh Keen Andrew Davis | |||
| 2012 | Scott PruettMemo Rojas | Emil Assentato Jeff Segal | |||
| 2013 | DP | GT | GX | ||
| Max AngelelliJordan Taylor | Alessandro Balzan | Jim Norman | |||
Speed Channel was the near-exclusive broadcaster of the Rolex Sports Car Series and included coverage of the 6 Hours of Watkins Glen and the 24 Hours of Daytona. On August 17, 2013,Fox Sports 1 became the new near-exclusive broadcaster for the Rolex Sports Car Series until 2014 when both Rolex Sports Car Series and American Le Mans Series form United Sports Car Racing.