Edwards, Italian MotoGP 2007

1982: The Yamaha OW61 YZR500 is the first V4 in the 500cc class.
1982: Jock Taylor (passenger Benga Johansson)(Windle-Yamaha) was killed at the Finnish sidecar GP. Imatra was taken off from the GP calender ever since.
1984: Michelin introduces radial tyres in GPs.