Final practice, air demonstrations and music acts round out schedule Friday, May 24 at IMS. Read More>
Two departure times provide more flexibility for fans who want to commute to the track on their bike on Race Day. Read More>
This partnership represents the first time a major athlete's sponsorship has been decided by a vote using blockchain technology. Read More>
View images from the shortened first day of the Indianapolis 500 Open test at Indianapolis Motor Speedway. View Photos>
View images from the once-in-a-lifetime Total Solar Eclipse event at Indianapolis Motor Speedway. View Photos>
Josef Newgarden unveils the 2024 Indianapolis 500 Ticket View Photos>
The Indianapolis Motor Speedway prides itself on its fire rescue and medical response teams that arrive to the scene of an accident within seconds. But how do they get that good? On Behind the Bricks, IMS President Doug Boles takes you through the annual Motorsports Safety Training at IMS, which features specific training scenarios for INDYCAR, NASCAR, IMSA and more to make sure every driver at IMS is safe. Watch Video>
On this episode of Doug and Drivers, 2022 Indy 500 winner Marcus Ericsson sits down with Doug Boles to talk about the pain of coming so close to scoring back-to-back wins, how he wanted to compete on ovals after his Formula 1 career and the transition to Andretti Global. Watch Video>
Why does Scott McLaughlin move his hands around so much in the car? What "button" is he pushing? What's the pressure of the iconic Yellow Submarine like? We cover that and so much more with Scott McLaughlin on the latest Doug and Drivers. Watch Video>
June 21, 2012 | By GRAND-AM MEDIA
The GT, or Grand Touring, class has long been a staple of sports car racing, both in national and international competition. The cars are historically those production-based cars built from the street and modified for the race track, though some cars in international series have been built as specificbased race cars with production-lookalike bodies. GRAND-AM has employed a two-class system for the Rolex Series since 2005, running Daytona Prototypes and GT cars. Currently, the Rolex Sports Car Series GT class sports some of the top models of sports cars in the world, with competitors adhering to GRAND-AM’s level-playing field. Among those cars eligible for competition in the Rolex Series GT class are the Audi R8 GRAND-AM, BMW M3 and M6, Chevrolet Camaro GT.R, Chevrolet Corvette, Ferrari 458 Italia Grand Am and 430C, Ford Mustang, Infiniti G Sedan, Jaguar XK8, Lamborghini Gallardo, Mazda RX-8, Mercedes-Benz SLS, Nissan 350Z and Porsche GT3. GT cars competing in the Rolex Series can be unibodied production cars (Prep 1) or custom tube frame chassis (Prep 2). The rules for GT employ several methods of equalization, including race car weight, tire size and engine RPM limits to provide an even playing field for the variety of different cars. Engines in GT machines produce between 390 and 450 horsepower depending on the car. The GRAND-AM Rolex Sports Car Series ran multiple GT classes from 2000-2004, including GTU, GTO, AGT, GTS and SGS.