Four Formula 1 drivers are due to start the United States Grand Prix from the pitlane as Aston Martin and Haas have each elected to revise set-ups, with Aston Martin splitting the specifications of its cars.

Both teams have brought significant upgrades to the Austin race, but Aston Martin faced a big setback with its package in Friday’s sole practice session when both cars encountered overheating brakes.

Deputy technical director Eric Blandin said on Sunday that "because of a mistake on the simulation" Aston Martin had "effectively too much blanking [blocking, which reduces the airflow going to the brake system] on […]

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By Donato