Michelin IMSA Insider: Corvettes to SEALs, Bosn’s Journey to GM

Keely Bosn can’t help but smile when she talks about her first car—a 1981 Chevrolet Corvette C3, gifted by her father, a former Top Fuel and Funny Car drag racer.

“You can imagine giving that car to a 16-year-old—you do stand out a little bit driving down the road,” Bosn, Cadillac Racing program manager, said. “I did a lot of road trips. I grew up in kind of rural Oklahoma. But one of my favorite memories is going to math and science camp on the other side of Oklahoma.”

Between those road trips, weekends at the track with her dad, and racing mini sprints, her love for cars and motorsports was solidified. Even her choice of college, Kettering University in Flint, Mich,, was fueled by her passion for cars.

“I knew about Kettering from a research project I did in middle school,” Bosn said. “I’d learned that the first Corvettes were built in Flint, and that stuck with me.”

But Bosn’s career path didn’t head straight into racing. After earning her engineering degree, she aimed high—literally—by training to become a U.S. Navy pilot. When medical issues brought that dream to a halt, she shifted into logistics and served two deployments in the Middle East with SEAL Teams 5 and 7.

“I had great leaders and some of the most fantastic leadership experiences with the Navy SEALs,” Bosn said. “I realized that so much of everything is team-based. And that’s what I really love about coming back to motorsports—the team aspect.”

Today, Bosn oversees a massive Cadillac Racing effort that includes three IMSA WeatherTech SportsCar Championship cars, two in the FIA World Endurance Championship, and a four-car lineup heading to the 24 Hours of Le Mans.

“Le Mans is such a team effort,” she said. “It’ll be great to see it all come together, especially with Wayne Taylor returning with his sons. Having all four teams there—competing, but also working together—is going to be something special.”

Across IMSA and WEC, in the GTP and Hypercar classes, there’s a constant: racing takes place on the same Michelin Pilot Sport Pro tire.

Michelin will be going for its 28th consecutive overall Le Mans win.

This weekend at the Chevrolet Detroit Grand Prix, Michelin tires will once again come into focus and play a key role in strategy.

“We’re always looking at tire degradation, especially with Cadillacs having a bit more mass than the other cars around the circuit,” said Bosn.

The last four 100-minute races in IMSA have been won by GTPs using just one set of Michelin tires, including by Cadillac in 2024 at Long Beach.

“I think the Michelin tires are fantastic, and I’m glad that they can last an entire race,” said Bosn.

And with the Detroit Grand Prix unfolding right around General Motors’ headquarters, the stakes are even higher.

“There’s going to be a lot going on, as you can imagine,” Bosn said. “A lot of executives, a lot of folks from GM.”