The curbing in Turns 5 and 6 of the Indianapolis Motor Speedway road course had been an issue for most of the Verizon 200 at The Brickyard on Sunday. It finally gave way with five laps to go.
The result was a massive crash with several cars, including those of William Byron, Joey Logano and Ryan Preece, flying into the tire barriers along the side of the course and many other cars spinning off the track.
The wrecks forced NASCAR to bring out the red flag.
Unbelievable.
— NASCAR on NBC (@NASCARonNBC) August 15, 2021
Car after car. Destroyed. #NASCAR pic.twitter.com/q8pG2uUpp1
That wouldn't be the end of it. During NASCAR's first attempt at overtime, Michael McDowell went airborne over the turn, igniting a crash that took out several other drivers. The crash ended McDowell and Austin Dillon's afternoons and the red flag was again brought out.
Michael McDowell gets airborne and multiple cars are collected in overtime. #NASCAR x @IMS
— NASCAR on NBC (@NASCARonNBC) August 15, 2021
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NASCAR crews addressed the curbing at the start of the second stage. A caution flag later came out when Ricky Stenhouse Jr. and Aric Almirola spun early in the final stage. When crews went out to look at the curb, they found a radiator pan and splitter structure.
WOW.
— NASCAR on NBC (@NASCARonNBC) August 15, 2021
It wasn't just a tiny piece of sheet metal that got wedged underneath the curb at @IMS. #NASCAR
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More debris appeared at the turn with 10 laps remaining, which brought out another caution flag.
When Byron went over the curbing with five laps to go, his car went spinning off course, followed by several more cars. Ultimately, the pileup took out Byron, Logano, Preece, Christopher Bell and Daniel Suarez.
When NASCAR crews finally removed what remained of the curbing, there's was a round of applause from the crowd.
Crazy scenes after that crash - listen to the crowd as the kerb is removed! 🔊 #NASCAR #IMS
— FormulaNerds (@FormulaNerds) August 15, 2021
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It turned out, however, that simply removing the curbing wouldn't be enough to fix the problem as McDowell flew over the bare turn and brought out the second red flag.
Safe to say, the first year of Cup racing on the Indy road course instead of the oval did not go quite as well as it could have.