DAYTONA BEACH, Florida – In making the switch to 18-inch tires with the Gen 7 car, NASCAR also is considering the use of a single lug nut to secure wheels. The move to a single lugnut (from the current five-lugnut wheel) could be viewed as a safety enhancement by greatly reducing the possibility of loose wheels, but it also would overhaul the dynamics of pit stops and likely de-emphasize the importance of tire changers.

It’s not all about being road relevant, but also fan relevant,” said NASCAR head of competition Tom Gale, “So to be more like our fans, we’re going to run with one nut.