Denny Hamlin and Chase Briscoe's Iowa brakes were a hot topic in the NASCAR Cup Series. The issue was a lack of consistent brake pressure, which led to a challenging race for both drivers. Hamlin and Briscoe's teams were allowed to make adjustments to their brake systems, but the changes came with penalties and a race-saving effort from the crew chiefs. The debate over brake pad changes before a race is ongoing, with safety concerns at the forefront. The current rulebook encourages risky behavior, and some crew chiefs, like Chris Gayle and James Small, believe it's time for a change. The focus is on finding a balance between safety and the competitive nature of the sport, with the potential for a compromise that allows for brake adjustments while maintaining the integrity of the race.