• Tim Fullbrook

Corvette and BMW receive added weight pre-Rolex 24

Both the C8.R and M4 GT3 have weight adjustments following the Roar qualifying weekend.

Image: BMW Motorsport

The two newest additions to the GTD PRO field have had their BOP measurements adjusted ahead of the season-opening Rolex 24 at Daytona.

Corvette's C8.R, modified from GTLM spec to quasi-GT3 in order run in the new category, will run 15kg heavier than it did during the Roar week. Now at 1335kg the car is the fourth heaviest of the ten chassis racing across the GTD PRO and GTD classes.

BMW's new-for-2022 M4 GT3 also has its minimum weight increased from 1330kg to 1340kg, alongside a four litre reduction in the fuel capacity. In order to help improve their straight line performance, the C8.R and M4 have had their minimum rear wing angles lowered by 3.0 and 2.2 degrees respectively. The BMW now has the lowest wing angle of all ten brands across the two categories.

Photo: BMW Motorsport

Both Corvette Racing and BMW M Team RLL failed to impress during the Roar week, leading many to believe the outfits were sandbagging.

The modified C8.Rs finished the 100 minute qualifying race in P6 and P7, with BMW failing to get inside the top ten at the checkered in the GTD PRO class, P12 and P23.

IMSA's adjustments come after BMW stalwart Bill Auberlen, driver of the #96 Turner Motorsports M4 GT3 in GTD, took to social media to request that IMSA "look over" the BOP. "Why didn’t we win you ask," said the 53 year-old, "Well I have a feeling IMSA needs to look over all the data from the Roar race and hopefully make the right choices so BMW can compete and the fans can watch a real race for the 24hrs of Daytona."

Whilst these changes may have many jumping the gun to call politics into play, it must be remembered that both cars are new to the category, and as such are more likely to experience changes early on in their competition.

Click here to see IMSA's most recent Technical Bulletin where these changes feature.

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