Shortly after the 2025 IMSA season wraps up on-track, the IMSA Esports Global Championship on iRacing returns for its fourth ...

But what’s in play deserves RACER’s first IMSA silly season piece, all due to the seismic shifts taking place in its top hybrid GTP class ahead of 2025.

Sebring’s GTP field will set records for total cars (13 of the 56 on the grid) and manufacturers (six as Aston Martin joins Acura, BMW, Cadillac, Lamborghini and Porsche).

The blood rivalry in GTD Pro between Corvette Racing by Pratt Miller Motorsport and the BMW team of Paul Miller Racing emerged once again. Alexander Sims was vying for the lead on board his Corvette ...

Action Express Racing has long a history with GM and the IMSA series dating back to 2012, including the Corvette DP and Chevy 5.5L V8 engine, as well as the Cadillac Racing Dpi and GTP programs.

The NPT-90 was IMSA’s first drag-be-damned GTP car. But the Riley family reset the bar with the Intrepid they drew for GM-factory affiliate Pratt & Miller Engineering.