In an announcement on Wednesday, IMSA stated that LMP3 cars will not be eligible to compete in its flagship series following this year’s Petit Le Mans season finale at Road Atlanta.
This will leave the championship with a four-class structure, with two categories each for prototype and GT cars.
LMP3 cars will however continue to find a home in the IMSA VP Racing SportsCar Challenge, which was established this year as a replacement for the now-defunct Prototype Challenge.
IMSA said it was necessary to drop LMP3 cars in order to accommodate an anticipated increase in GTP, LMP2, GTD Pro and GTD entries in the coming years.
The sanctioning body is expecting doubt-digit GTP grids in the near future, aided by the arrival of customer cars and potentially a fifth manufacturer alongside Acura, Cadillac, Porsche and BMW.
IMSA is also anticipating more GT3 cars to join the field across GTD Pro and GTD classes, with Ford gearing up to launch the Mustang in 2024 and Corvette preparing a new GT3 car from the ground up based on the C8.R.
Source: Autosport