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GTD Pro, GTD to Start With Same BoP at Daytona

IMSA releases Daytona-specific Balance of Performance for start of season…

Photo: Jake Galstad/IMSA

IMSA has revealed the Daytona-specific Balance of Performance table that will be utilized for the kickoff of the WeatherTech SportsCar Championship season, confirming identical BoPs for the new GTD Pro class and GTD category.

Released on Wednesday, the table has also set the starting technical configuration for the nationally homologated Chevrolet Corvette C8.R GTD. 

The former GTE-spec car, adapted to the GT3-based platform, will run the Roar Before the Rolex 24 with a reduced 41.3 mm air restrictor and at an increased minimum weight of 1320 kg.

It compares to a 44.5 mm air restrictor and 1270 kg weight the car ran in GTLM trim at Daytona last year.

In addition, the Corvette will also be configured with ABS and modified aero, including the addition of a 15 mm rear wicker.

IMSA has also made a number of BoP changes to cars compared to last year’s Roar and Rolex 24 configurations.

The Aston Martin Vantage GT3 has been given a 30 kg increase in minimum weight, with the Mercedes-AMG GT3 Evo getting a 10 kg addition and the Porsche 911 GT3 R a considerable 45 kg more weight, although offset with a 3 mm increase in its air restrictor that will equate to increased power.

Both the Acura’s NSX GT3 Evo22 and Ferrari 488 GT3 Evo 2020, meanwhile, have received turbo boost reductions compared to 2021 levels.

The sanctioning body has also established the BoP for the McLaren 720S GT3 and new BMW M4 GT3, both of which did not take part in last year’s race.

Per the regulations, IMSA reserves the right to make class-specific BoP adjustments to GTD Pro and GTD if deemed necessary but is understood to be in favor of retaining the same performance levels across both GT3 categories.

The DPi class, which has been reduced to a two-manufacturer battle between Acura and Cadillac for this year, sees no major performance-related changes compared to last year’s BoP for the Roar and Rolex 24.

John Dagys is the founder and Editor-in-Chief of Sportscar365. Dagys spent eight years as a motorsports correspondent for and SPEED Channel and has contributed to numerous other motorsports publications worldwide. Contact John

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