
Photo: Brandon Badraoui/IMSA
The extensive aero updates to the Cadillac V-Series.R has been aimed to give its drivers a more “confidence inspiring” car according to Cadillac Racing program manager Keely Bosn.
The luxury GM brand took the wraps off its updated LMDh car in last November’s IMSA-sanctioned test at Daytona International Speedway, which saw all three of its IMSA WeatherTech SportsCar Championship entries in action.
Wayne Taylor Racing and Action Express Racing, along with Hertz Team JOTA personnel from the manufacturer’s FIA World Endurance Championship program, were also at Circuit of The Americas late last year for additional testing ahead of next weekend’s WeatherTech Championship season-opener.
As revealed by Sportscar365, Cadillac took two Evo jokers for this year, with a full hardware switch to Brembo brakes counting as one in addition to the aero changes, which is most noticeable with more rounded bodywork and a significantly lower rear wing profile and design.
“From a program perspective, we feel very prepared but never complacent,” said Bosn. “The competition in GTP keeps rising, and that pushes us to keep improving every detail across our reliability, drivability, pit stop execution, all of it.
“Our focus going into the Roar and Rolex is to execute cleanly, understand how the track and conditions evolve, and finalize a raceable setup so that when we roll off for the 24, the drivers have confidence in the car and we can fight for a result that reflects all the work from the entire Cadillac Racing team.
“At the November Daytona test, we evaluated a few updates to our overall package that are aimed at giving the drivers a more consistent, confidence‑inspiring car.
“On the performance side, we worked through some refinements in the aero and mechanical balance with our updated aero kit to help the car stay predictable as the track changes from day to night and as tire degradation comes into play.
“That includes small changes to how we manage downforce and overall platform control, all within the homologation framework.
“We’ve also spent time on the kind of details that matter in a 24‑hour race: better tire management, better stability in changing conditions, and a car that gives the drivers the same feedback at hour 23 as it did at hour three.
“On the propulsion side, we leveraged feedback from drivers in both series to find opportunities for performance gains and increase efficiencies.
“Overall, the feedback from the drivers at the test was positive. They noticed the improvements, and that’s what we’re targeting, a well‑rounded, durable package that lets them push when it counts and keeps us in contention all the way to the checkered flag.”
Cadillac enters the new WeatherTech Championship season after winning the final two races of the 2025 campaign with the Action Express trio of Jack Aitken, Earl Bamber and Fred Vesti.
The trio will be joined by NASCAR rising star Connor Zilisch for the Rolex 24.
“We learned so much throughout the last year obviously bring some new parts to the car in the Daytona test at the end of 2025,” said Vesti. “It will be quite exciting to continue that work and prepare for the 24-hour race.
“It’s the biggest, longest and toughest race of the season and the motivation is sky high, and we are ready to go.
“The Roar is an interesting place to be and there are many practices and so much time to the race, but before you know it, it’s all over and you are on the grid and ready to race.
“It’s about dialing in the car and fine tuning the setup and testing out anything that might happen in the race. That is the plan. Can’t wait to be back with the team.”
