Detroit's downtown street circuit joined Formula 1 in 1982 and was revised after its first, especially slow edition. Heat, bumps, concrete walls and many gear changes made it a severe reliability test until the Grand Prix left after 1988.
John Watson won from 17th on the grid in 1982, then a record for a dry race. Ayrton Senna mastered the circuit with three consecutive victories from 1986 to 1988.
Across 4.023 km, its 20 corners create a distinct rhythm between braking, precision and acceleration. As a street circuit, it asks drivers and teams to adapt setup, tyre management and race strategy to the venue's particular constraints, while its anti-clockwise direction shapes the sequence of its most demanding sectors.
