The Straight Talk Wireless 500 at Phoenix Raceway on March 8, 2026, was defined by a series of right-front tire failures that repeatedly disrupted the NASCAR Cup Series race. Throughout the 312-lap event, drivers faced blowouts, prompting cars to collide with the outside wall or slow abruptly to pit road as teams scrambled to adjust strategies.
Officials waved 12 caution flags over 86 laps, many tied directly to tire problems during extended green-flag runs. After the race, Joe Gibbs Racing’s Denny Hamlin addressed the persistent issue, offering insight into why he believes team decisions contributed to the high failure rateaat Phoenix.
Denny Hamlin Says Teams Push Tire Limits
On the Actions Detrimental podcast, Hamlin discussed how teams frequently push their setups to gain speed over long runs. The search for an edge, he said, often leads teams to stretch the limits of tire pressure and car setup.
“It’s the teams. We’re just pushing it. We certainly know that the lower the air pressure, the faster you’re going to be on the long run, and these teams just keep pushing it. So what they do is they get somewhat comfortable in practice, they run the first run of the race, see where things are. Then all of a sudden they’re like, ‘Alright, well, let me take another tenth or two out of the tire.’”
Teams constantly hunt for extra speed, Hamlin explained. While small tire pressure adjustments can help over long runs, they also increase the risk of failure.
Drivers and teams must weigh speed against tire durability. Pushing too far in one direction can result in tire failure mid-run.
Hamlin Explains the Setup Balance
Tire pressure, Hamlin noted, is just one part of the equation. Suspension settings and camber also influence how much stress the tires endure through Phoenix’s flat corners.
“It’s not just the air pressure. It’s how much camber you’re putting with that air pressure. So if you want to drop your air pressure super super low, just reduce the amount of camber that’s in the tire. But then there’s efficiency, that you lose actual grip on the short run. It’s a fine line. You want the camber for the short run, you want the air pressure for the long run, and you’re just constantly battling those two out.”
Teams must choose where to strike that balance. More camber improves short-run grip, while lower air pressure benefits longer runs, so teams often try to combine both for an advantage.
Phoenix’s flat, abrasive surface makes this balance especially difficult. Long green-flag runs build up heat and stress on the right-front tire.
Tire Failures Shape the Phoenix Race
Several drivers fell victim to tire failures. In Stage 2, Kyle Busch lost a right-front tire on lap 93 and hit the wall. Shane van Gisbergen had a similar issue soon after.
Chase Briscoe, while running third, lost his right-front tire on lap 132 heading into Turn 4, sending his car into the wall and triggering another caution.
Other drivers, including Noah Gragson, William Byron, Connor Zilisch, and Riley Herbst, also dealt with tire issues.
Before the weekend, Goodyear emphasized that their recommended pressures “weren’t guesses” and urged teams to stay above the minimums.
The Phoenix race once again demonstrated how critical tire management is to the outcome of a NASCAR Cup Series race.
Denny Hamlin Blames Teams for Phoenix Tire Blowouts