NASCAR is once again finding itself staring down the barrel of another change. With barely 6 weeks before the second-to-last race in the regular Cup Series season at New Hampshire Motor Speedway, it’s down to the wire. The playoff bubble is already taking shape based on the decision to bring back the Chase playoff format in January. The Chase is a 10-race championship playoff where drivers compete for a title based solely on points, with zero eliminations, giving them more freedom to focus on winning and pulling consistent runs.
NASCAR will shake up the format by removing adjusted practice groups and combining everyone into a single 50‑minute session with no scheduled breaks starting at NHMS. This approach is expected to continue through the rest of the season, except at superspeedways like Daytona, Talladega, and Atlanta, which will keep their existing or special formats.
The goal of making changes to the practice format is to provide more track time, allowing teams to evaluate tire wear and see if any tweaks should be made to race strategy. Adding practice tires into the mix will also be beneficial because it will increase the amount of time teams are able to spend on the track. But impound rules will remain in effect, and limits will still be placed on post-qualifying adjustments.
Similarly, in 2025, NASCAR implemented a similar change to the practice format, but it was strictly experimental and selective across the schedule. This is perhaps the most notable difference between last year and this year’s implementation. Other differences include an added set of practice tires compared to 2025’s unstandardized two-set allocation, as well as some track modifications and road course continuation with group practice structures. Yet, what it really boils down to is consistency, the primary ingredient in this sport.
Drivers must be able to assess long-run performance, validate setups and make adjustments, plan strategically, and learn how to adapt to track conditions. Therefore, these changes make preparation much more uniform and allow crew chiefs and engineers to conduct more thorough long-run assessments, optimize tires, and streamline practice sessions instead of worrying about the added time required for split sessions.
And as the season tightens, that consistency becomes the dividing line between teams who can manage change and teams who get swallowed by it. With the Chase format back in play and practice rules shifting again, every lap of preparation carries more weight than it did a year ago. NASCAR isn’t just adjusting procedures. It’s reshaping how drivers and teams prepare for the most critical stretch of the season, and the ones who adapt quickest will be the ones still standing when the grid locks in.
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