IMSA Unveils 2026 Sporting Regulations: Key Changes Announced for WeatherTech SportsCar Championship
The International Motor Sports Association (IMSA) has released its Sporting Regulations for the 2026 WeatherTech SportsCar Championship, introducing several significant changes aimed at enhancing race efficiency and driver participation.
One of the most notable amendments is the implementation of a “Short FCY” (Full Course Yellow) protocol. This will apply to any FCY occurring within 30 minutes of race initiation or within 15 minutes following a green flag restart. During a Short FCY, the pit lane will remain closed; however, if the duration exceeds 15 minutes, IMSA may transition to a Standard FCY, permitting pit lane access. This strategy aims to reduce time under yellow flags, particularly during early race stages.
Additionally, changes have been made regarding 24 Hours of Le Mans entry invitations. The IMSA GTP Champion team, along with the recipients of the Jim Trueman and Bob Akin Awards—honoring top Bronze drivers in LMP2 and GTD, respectively—will now receive invitations at the discretion of race organizers. Section H of the Supplementary Regulation states that these entries are not guaranteed. Sources indicate this alteration arises from potential concerns surrounding a Porsche exit from the FIA World Endurance Championship’s Hypercar class, assuring that award contenders will not face increased risk of invitation revocation.
IMSA President John Doonan emphasized collaborative efforts with key figures from the Automobile Club de l’Ouest (ACO) regarding Porsche’s situation for the upcoming Le Mans competition, stating, “We are big advocates of our champion. It’s ultimately the ACO’s decision.”
In terms of driver classifications, Bronze drivers must now apply for permission to partake in the GTP or GTD PRO categories and are subject to a new minimum drive time of 4.5 hours at the Rolex 24 At Daytona, aligning with LMP2 and GTD standards. Currently, only two Bronze drivers are approved for GTD PRO—Kenny Habul and Scott Noble—who will need to submit applications to compete.
Further updates include a requirement for Michelin and teams to share relevant tire performance data, new protocols for driver safety following vehicle incidents, and expanded rights for teams to utilize private in-car footage on digital platforms.
Lastly, teams in the LMP2, GTD PRO, and GTD categories will now benefit from increased testing allowances, promoting further competitive preparation. The 2026 IMSA Sanctioned Test at Daytona has also been rescheduled to take place on December 11–13.
These regulations reflect IMSA’s commitment to advancing the sport while maintaining competitive integrity, ensuring robust participation and safety standards for all stakeholders involved.
