The IndyCar Series will introduce a new tire rule for the upcoming Sonsio Grand Prix held on the Indianapolis Motor Speedway road course.As revealed by RACER earlier this week, a change in tire usage was being considered for the Indy GP where the two-lap minimum use of Firestone’s primary compound...

IndyCar has made three significant tweaks to its rulebook ahead of this weekend's race at Mid-Ohio.The first of the changes affects restarts, with revisions to rule 7.6.1.2 now stipulating that in the event of a restart with 15 or less laps remaining, lapped cars will be moved to the rear...