NASCAR Announces Aero Rules Changes for Sprint All-Star Race
CHARLOTTE, N.C. - NASCAR announced Monday an update to the current rules package aimed to reduce both downforce and side force that will be in place during the Sprint All-Star Race at Charlotte Motor Speedway.
The first change is a reduction in the number of cooling fans permitted for use by teams. Gene Stefanyshyn, senior vice president of innovation and racing development for NASCAR, said teams have been using cooling fans to create downforce on the cars. The cooling fan restriction will remain in place through the end of the season.
Secondly, teams will not be allowed to use any rear toe alignment in their car's setup for the All-Star Race.
"We currently allow them to set up the car with some skew that provides not only a turning advance but also a side force advantage," Stefanyshyn said. "
According to NASCAR, the rear toe change will reduce corner speeds by approximately 3 mph, and is
NASCAR also announced that teams must now weld truck trailing arm mounting brackets to prevent movement during the race. That change will also remain in place for the remainder of the 2016 season.