During the hour-long practice session in Phoenix, the issues began when championship contender Chase Briscoe lost a left rear within five minutes of the start of the session. It was the first of many, and those failures are likely not an anomaly but a result of teams being aggressive with suspension adjustments and tire pressures.
Phoenix Raceway is a unique type of oval because it is asymmetric, which requires a compromise when it comes to suspension setup for making speed: the entry into turn 1 coming off the dogleg is quite different to the entry into turn 3 coming off the back straight.
