2005 United States Grand Prix

The 2005 United States Grand Prix was a Formula One motor race held on June 19, 2005, at the Indianapolis Motor Speedway and was the ninth race of the 2005 Formula One World Championship. The event is one of the most controversial Formula One motor races in modern history. Out of the 20 cars that entered the race, only the six cars from the teams using Bridgestone tyres competed. The remaining fourteen entrants, all using Michelin tyres, completed the parade lap, but retired to the pit lane before the race started.

Following several tyre failures before the race, which caused major accidents for Ralf Schumacher's Toyota during Friday practice and then for his Toyota stand-in Ricardo Zonta, Michelin advised its seven customer teams that without a reduction in speed in Turn 13, the tyres provided for the race would only be safe for 10 laps. Michelin had been providing working tyres for the race since 2001. The situation was worsened by the 2005 Formula One rules, which forbade tyre changes during the race, and a repave of the oval portion of the course after the 2004 Brickyard 400.

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