In a rules bulletin Thursday morning, NASCAR announced it will run the lower downforce rules package in the Aug. 28 race at Michigan International Speedway. The changes, which include a shortened spoiler, a reduced splitter and the elimination of rear skew that generated sideforce, also were used in the June 12 race at Michigan, the July 9 race at Kentucky Speedway and at the Sprint All-Star Race at Charlotte Motor Speedway in May. The objective is enhancing the ability of drivers to pass. NASCAR vice president of innovation Gene Stefanyshyn said the same rules likely would be used for the 2017 season. NASCAR still is considering a few tweaks that including shifting some downforce from front to rear, removing some rear downforce or adding some sideforce. Any further tweaks will be made in collaboration with teams after the Aug. 28 race at the 2-mile oval. Stefanyshyn said there were more setup combinations to try after experimenting with the new rules at Michigan in June.(NBC Sports)
