#3-Austin Dillon was quickest during happy hour for the Alliance Truck Parts 250 with a speed of 190.789mph. He was followed by: #31-Justin Allgaier, #33-Paul Menard, #2-Brian Scott, #77-Parker Kligerman, #5-Brad Sweet, #32-Kyle Larson, #99-Alex Bowman, #60-Travis Pastrana, and #54-Kyle Busch. 39 drivers participated in the session. See complete results on the Michigan practice speeds page (pdf) .
