Formula TT

The event came under increasing scrutiny due to safety concerns despite efforts by the ACU to retain its world championship status.

[1] When Italian rider Gilberto Parlotti was killed during the 1972 TT, his close friend and the reigning world champion Giacomo Agostini, announced that he would never again race on the Isle of Man.

[1] Shortly after the 1976 TT, the FIM made the long-anticipated announcement that the TT, once the most prestigious race on the Grand Prix calendar, was stripped of its world championship status.

[1] The race authorities of the Isle of Man TT worked with Auto Cycle Union to set up a new formula that would include racing on the Isle of Man.

[2] For the first two years all three formula were run as part of the Isle of Man TT: In 1979 a second race was added: For the start of the 1982 season Formula III was dropped and the number of circuits was increased: For the remaining four seasons only Formula I races were run: In 1988 a rival series called the Superbike World Championship started and as it proved popular and commercially successful, it was decided to end the Formula TT at the end of the 1990 season.