2023 IMSA SportsCar ChampionshipPrevious2022NextSupport series:Michelin Pilot ChallengeVP Racing SportsCar Challenge The 2023 IMSA SportsCar Championship (known for sponsorship reasons as the 2023 WeatherTech SportsCar Championship) is a planned motor racing championship, set to be the 53rd racing season sanctioned by the International Motor Sports Association, which traces its lineage back to the 1971 IMSA GT Championship. It will also be the tenth season of the IMSA SportsCar Championship since the merger between the American Le Mans Series and the Rolex Sports Car Series in 2014, and the eighth under the sponsorship of WeatherTech. The 2023 season marks an overhaul season for the championship, with a change in class structure and a new race on the season calendar at Indianapolis Motor S