NASCAR rulebook updated ahead of Phoenix Raceway

Teams will be allowed to make limited changes to the brakes NASCAR will allow teams to change front brake pads and rotors following practice and qualifying on Saturday. We’ve seen several braking issues or complete failures at Nashville, Iowa New Hampshire and Gateway. All of these tracks run the short track package. In many cases, the failures resulted in heavy impacts with the wall. Hamlin threatened NASCAR saying he wasn’t going to start the race at Iowa Speedway after they wouldn’t allow him to make a change to his brake system before the green flag. The driver noted that it...