Offline
True, but also it puts crew members in harms way for a shorter time.
Shorter time and fewer projectiles. Those things are dangerous when they get spun up by a car revving out of the pit box. The other safety issue is fewer loose lug nuts on the track.
But I read the main driver is that they wanted to go to 18” aluminum wheels. The manufacturers wanted bigger wheels to look like the street cars and aluminum is lighter and cheaper for the teams. But given the torque there’s too much chance for deformity with an 18” alum wheel and five lugs. The single lug was really the only way to do it.