Pagenaud leads Chevrolet Detroit Grand Prix warm-up

By Steve Wittich When Sunday morning warm-up began, the ambient temperature was 67F, and the track temperature was 86.7F. Teams and drivers were on different programs early in the session, with some scuffing tires and others beginning to work on full-tank race running. The mix of Primary (black) and Alternate (red) Firestone Firehawk Racing Tire…

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