Formula 1 - UNITED STATES Grand Prix, Phoenix, AZ - June 4, 1989 - Round: 5, Race Number: 473

[YukiNekoPrincess]

Is it true that 1989 saw the largest number of cars entered in any F1 race?

[pahovis]

Turbocharged engines had been banned at the end of 1988, as they were felt to be making the sport dangerous, not to mention expensive.

In response to the above, a number of new teams were expected to entered the series, and there would be 39 drivers now competing for 26 spots on the starting grid.