Skip to content


The IMSA WeatherTech SportsCar Championship features two styles of cars – Prototype, which showcases the latest automotive technology and are uniquely designed for the racetrack, and Grand Touring, which is based on road-going production models. These two styles of cars make up the series’ five classes – Daytona Prototype international (DPi), Le Mans Prototype 2 (LMP2), Le Mans Prototype 3 (LMP3), GT Le Mans (GTLM) and GT Daytona (GTD).

To help fans follow the on-track action, the WeatherTech Championship uses a Leader Light System. It allows fans to easily identify the position of each car in its respective class. The position of the car is displayed on an LED panel mounted on the side of the car and the color of the LED number corresponds with the class. For instance, an illuminated LED red number 5 on a GTLM style car means that car is in 5th position in the GTLM class.

Daytona Prototype international (DPi)
The fastest and most technologically advanced sports cars in North America, the Daytona Prototype international (DPi) is specifically designed and engineered for the race track. DPi cars use chassis built to international specifications powered by engines from mainstream automotive manufacturers like Acura, Cadillac and Mazda. In addition, DPi bodywork includes styling cues that align with these engine manufacturers.

Le Mans Prototype 2 (LMP2)
The Le Mans Prototype 2 (LMP2) is a closed-cockpit car developed by four approved constructors. In addition to the IMSA WeatherTech SportsCar Championship, LMP2 cars are eligible to compete in other global series such as the FIA World Endurance Championship, which includes the prestigious 24 Hours of Le Mans.

Le Mans Prototype 3 (LMP3)
The Le Mans Prototype 3 (LMP3) is an entry level closed cockpit car developed by four approved constructors. In addition to the IMSA WeatherTech SportsCar Championship, LMP3 cars are also eligible to compete in the IMSA Prototype Challenge – one of IMSA’s driver development series – as well as other international series such as the European Le Mans Series (ELMS).

GT Le Mans (GTLM)
Utilizing the same technical regulations as the 24 Hours of Le Mans, the GTLM cars are the most elite and fastest GT cars on the track. Based on production models, they are engineered to extract the maximum performance possible. The class serves as a true proving ground for leading manufacturers such as BMW, Corvette, Ferrari and Porsche.

GT Daytona (GTD)
The GT Daytona cars are enhanced (not defined by) technology and utilize the global FIA-GT3 specification. The GTD class consists of cars from leading manufacturers such as Acura, Audi, BMW, Ferrari, Lamborghini, Lexus, McLaren, Mercedes-AMG, and Porsche.