"With essentially little to no underbody because we’re now going to the short track aerodynamic package for Darlington, these cars are out of control," says Denny Hamlin.

Darlington is about to get harder, not easier. The added horsepower package is coming to one of NASCAR’s toughest tracks, but teams are not getting any extra tires.

As NASCAR heads into one of its toughest race weekends, Rajah Caruth is doing more than preparing on track. The Rajah Caruth Breakfast Club interview offers a clear look at how he built his career and what it takes to compete at this level.

From a sanctioning body standpoint, Executive Vice President and Chief Racing Development Officer John Probst isn’t willing to deliver as precise of a prediction but agrees that the overall direction points to less stability and more tire management.