When the checkered flag falls on Motul Petit Le Mans Saturday night, it will mark the end of Daytona Prototype international (DPi) as the top class in IMSA WeatherTech SportsCar Championship. While there is much excitement for its replacement -- LMDh and (potentially) Le Mans Hypercar combined into the new...

Find a picture of a first-generation Daytona Prototype, circa 2003-07, from what was then called the Grand Am Rolex Sports Car Series. Now put it alongside a picture of a current IMSA WeatherTech SportsCar Championship Daytona Prototype international (DPi) competitor -- or even better, one of next year’s LMDh prototypes...

At the halfway point of the final Daytona Prototype international (DPi) season, Acura has begun to flex some muscle with back-to-back 1-2 finishes. Don’t let that fool you. Recent history and drivers involved remind us there’s a long way to go.The Acura ARX-05 DPis fielded by Wayne Taylor Racing and...

A message to aspiring professional drivers from a prominent driver manager: “If you want to be a race car driver, don’t do it for money!”That piece of advice was offered among the various calls I recently made to managers, team owners, and even a few drivers who know the financial...

This story first appeared in the Fall 2021 issue of RACER magazine. Click here to get your copy, or set yourself up for a full year of stellar motorsport writing and photography with a print or digital subscription.Matt Kurdock is buried in the minutiae. The life of IMSA’s technical director...

The JDC-Miller Motorsports IMSA DPi team is working to keep both of its cars in motion next season.The Minnesota-based Cadillac DPi-V.R program is confident its No. 5 Mustang Sampling entry will return, but there’s no guarantee the sister No. 85 Cadillac will be back unless more funded drivers and sponsorship...

IMSA returns to one of its ancestral homes this weekend with the Road Race Showcase at Road America, where a 32-car WeatherTech SportsCar Championship field is ready for three days of action in Wisconsin. The Friday-Sunday event will feature a number of IMSA’s training series prior to the 2h40m feature...

IMSA’s defining Daytona Prototype internationals will be replaced by a new formula named LMDh. LMDh is what has been referred to as DPi 2.0.The acronym LMDh, which was not defined by the ACO or IMSA in Friday’s announcement at Daytona International Speedway, could come to stand for ‘Le Mans Daytona...

IMSA and the Automobile Club l’Ouest have entered into an agreement that will allow both organizations to compete with their top prototype classes at North American WeatherTech SportsCar Championship events and at the ACO’s legendary 24 Hours of Le Mans in France.The heart of the partnership involves combining the upcoming...

The potential to race the same car at Le Mans as in the IMSA WeatherTech SportsCar Championship appeals to Juan Pablo Montoya (pictured at microphone, above) and Alexander Rossi, following Friday's announcement of plans for a convergence of prototype regulations between the Automobile Club de l’Ouest (ACO) and IMSA.The new...