| Year | SR/SRP/DP Champion(s) | GTU/GT Champion(s) | SRII/SRPII Champion | GTO/GTS Champion(s) | AGT Champion | SGS Champions |
| 2000 | James Weaver | Mike Fitzgerald | Larry Oberto | Terry Borcheller | Doug Mills | |
| 2001 | James Weaver | Darren Law | Andy Lally | Chris Bingham | Craiq Conway | |
| 2002 | Didier Theys | Bill Auberlen | Terry Borcheller | Chris Bingham | Kerry Hitt | |
| Cort Wagner | ||||||
| 2003 | Terry Borcheller | Cort Wagner | Steve Marshall | Tommy Riggins | ||
| Brent Martini | Dave Machavern | |||||
| 2004 | Max Papis | Bill Auberlen | Andy Lally | |||
| Scott Pruett | Marc Bunting | |||||
| 2005 | Max Angelelli | Craiq Stanton | ||||
| Wayne Taylor | ||||||
| 2006 | Jorg Bergmeister | Andy Lally | ||||
| Marc Bunting | ||||||
| 2007 | Alex Gurney | Dirk Werner | ||||
| Jon Fogarty | ||||||
| 2008 | Scott Pruett | Kelly Collins | ||||
| Memo Rojas | Paul Edwards | |||||
| 2009 | Alex Gurney | Dirk Wernner | ||||
| Jon Fogarty | Leh Keen | |||||
| 2010 | Scott Pruett | Emil Assentato | ||||
| Memo Rojas | Jeff Segal | |||||
| 2011 | Scott Pruett | Andrew Davis | ||||
| Memo Rojas | Leh Keen | |||||
| 2012 |
