Several drivers are coming into the season-opening Grand Prix of St. Petersburg uncertain of how the new alternate tire strategy will affect the racing.
Earlier this week, an updated rule was introduced into the IndyCar Series that included the change in tire usage requirements for all street courses. Drivers must now use one set of primary tires (hard) and two sets of alternate tires (soft) now required during the race. Previously, drivers just needed to use one set of each compound. The rule around two green-flag laps on each set remains unchanged.
