IMSA has set the starting Balance of Performance for the remainder of the 2021 WeatherTech SportsCar Championship season.
Released on Wednesday, the BoP differs from January’s season-opening Rolex 24 at Daytona, which is a standalone table to the other WeatherTech Championship circuits due to the track’s unique oval/infield road course.
The BoP in the DPi class is unchanged when compared to the configuration raced in last year’s season-ending Mobil 1 Twelve Hours of Sebring, both in terms of minimum weight and power output.
While set to be an all ORECA show at Sebring, BoP for LMP2 has also been detailed along with the GT Le Mans and GT Daytona classes.
The Porsche 911 RSR-19 has been given a 0.7 mm increase in its air restrictor (31.5 to 32.2 mm x2) compared to its end-of-year configuration while the BMW M8 GTE gets a turbo boost reduction across most RPM levels.
No change has been given to the class championship-winning Chevrolet Corvette C8.R.
GTD sees weight adjustments for the Acura NSX GT3 Evo (+10 kg) and BMW M6 GT3, Lexus RC F GT3 and Mercedes-AMG GT3 Evo (all +20 kg) although the Acura and BMW has been handed a slight increase in turbo boost levels.
The Lexus, meanwhile, will have a 1 mm larger air restriction compared to its configuration from last year’s season finale.