Ross Chastain finished second in Friday night's NASCAR Truck race at Charlotte Motor Speedway, and when the Cup cars went out on the track for Coca-Cola 600 practice, he was again very fast.
Timing in ninth overall on the time sheets, Chastain was showing impressive long-run speed in the No. 1 Chevrolet. He led all drivers in the 10-lap, 15-lap, and 20-lap averages. Unfortunately, after 20 laps on track, disaster struck as he cut a left-rear tire going down the backstretch. The car spun out in Turn 3 and Chastain hit the outside wall with the driver-side door. The car came to a rest on the apron and was towed back to the pit lane. While a cause has yet to be officially determined, being aggressive with extremely low air pressures has caused previous tire issues for other teams this year.
