Understanding the Sport

Technical Inspection

Take a deep dive into the scrutineering process that occurs at every WeatherTech Championship event.


When the green flag drops the cars come to life. Engines roar and drivers try to make their moves to the front.

Race Starts / Qualifying Procedures

Learn more about the start of the race and also about the 15-minute qualifying sessions that can make or break a race.

Pit Stops

It's where races can be won or lost. When do you come in? Do you change four tires? Do you change drivers? Do you need fuel? IMSA pit stops are organized chaos.