GoPro Grand Prix of Sonoma – Sunday – Race Notes.

Of the 20 cars starting the race on red Firestone Racing tires, the No. 15 of Graham Rahal, No. 10 of Tony Kanaan and the No. 41 of Jack Hawksworth started the race on scuffs.  The right rear on Rahal was a sticker red, which TSO confirmed with Ricardo Nault was a replacement tire. The…

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