IMSA Has A BoP Problem

With their win at Sebring, Porsche Penske Motorsport has completed the "36 Hours of Florida" sweep for the second season in a row, with the no. 7 car leading a 1-2 finish for the team in dominant fashion. Predictably, Penske's strong performance started mutterings among fans about BoP issues within IMSA in particular and endurance racing in general, and I can't say I disagree.

If you aren't familiar with endurance racing, BoP stands for "Balance of Performance". Manufacturers bring all kinds of cars into the IMSA and WEC series that make power in many ways, and BoP is the mechanism that is meant to ensure that the potential performance of all cars is equal. Parameters such as weight, horsepower, fuel tank size, fueling speed, and more are all adjusted to make the field as fair and close as possible to prevent a single manufacturer or team from being overly dominant. At least, that's the theory.

In practice, BoP is tricky to get right. Just because the potential is the same doesn't mean the actual speed will be as well. Things like setup and driver skill affect the speed of the cars, not to mention that figuring out how to balance the BoP properly is more of an art than a science. There's also the possibility of a team sandbagging during testing to get a more favorable BoP.

It's also sometimes difficult to tell how seriously you can take fan feedback. People hate the dominant teams in any sport, and motorsport is no exception. People hated Lewis Hamilton during the Mercedes domination era, then switched to Max Verstappen once Red Bull took over. People hated Toyota when they were the dominant force in WEC, then Ferrari once they launched their Hypercar program. And people hate Penske and his decades of winning at the top levels of motorsport. That makes Penske something of an "acceptable target" in these kinds of conversations.

Still, let's try to look at things objectively. They've won the last three Daytonas in a row as well as the last two Sebrings. They've finished 1-2 in the championship standings for the past two seasons and are well on their way toward a third straight title, even just two races in. Last season, their two cars combined to win each of the first four races of the season, and both cars finished on the podium in each of those races. At this year's Sebring in particular, the cars were just way faster than anyone else in the field in a way that can't just be chalked up to driver skill or setup.

Penske also has a rich history of cheating and bending the rules, including two major scandals in IndyCar in two consecutive seasons. Even the most ardent defenders of Penske and the BoP process have to know something is up. Penske is doing something to twist the BoP process in their favor.

IMSA knows they have a problem too: as of 2026, they've banned drivers from making public statements about the BoP. This mirrors the policy that WEC put in place back in 2023, and it's a silent admission that they have a problem they don't know how to fix.

We can pretend that nothing's wrong and that Penske's dominance is owed entirely to superior drivers or strategy, but that's not going to change the facts: something's not right with BoP, and it needs to be fixed.

At least we still have three other classes to entertain ourselves with if GTP is going to be a blowout again.