NASCAR’s Enjoy Illinois 300 at World Wide Technology Raceway was already chaotic. Then the brakes started failing.

Ryan Blaney was running sixth on Lap 155 when the right-front brake rotor on his No.12 Ford exploded. The 2023 Cup champion had been in contention for a strong result, but the failure sent him into the outside wall and ended his race with a 35th-place finish. His crew chief Jonathan Hassler later admitted the team had underestimated how much cooling the brakes needed with NASCAR’s higher-horsepower package.

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Then, on Lap 214, Chase Elliott who was running sevent, suffered a brake failure while running seventh. His No.9…

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