Sonsio Grand Prix At Road America – Practice 2 notes – O’Ward and Arrow McLaren SP make gains
By Steve Wittich When the second NTT INDYCAR SERIES practice got underway at 9:45 pm, the ambient temperature was 68F, and the track temperature was 72F. With no Alternate Firestone Firehawk Racing Tires (reds) to use, teams opted for a short run on the Primary Firestone Firehawk Racing Tires (blacks) to start the 45-minutes session….