The 1975 Nations motorcycle Grand Prix was the fifth round of the 1975 Grand Prix motorcycle racing season. It took place on the weekend of 16–18 May 1975 at the Autodromo Dino Ferrari.

500cc classification Pos. Rider Team Manufacturer Time/Retired Points 1 Giacomo Agostini Yamaha Motor NV Yamaha 59'28.200 15 2 Phil Read MV Agusta MV Agusta +1'00.800 12 3 Hideo Kanaya Yamaha Motor NV Yamaha +1'23.600 10 4 Armando Toracca MV Agusta +1'48.400 8 5 Stan Woods Suzuki +1 lap 6 6 Alex George Yamaha +1 lap 5 7 John Newbold Suzuki +1 lap 4 8 Thierry Tchernine Yamaha +1 lap 3 9 Bernard Fau Yamaha +1 lap 2 10 Rudolph Keller Yamaha +1 lap 1 11 Max Wiener Rotax +1 lap 12 Nico Cereghini Suzuki +1 lap 13 Giorgio Gatti Yamaha +1 lap 14 Germano Paganini Harley-Davidson +1 lap 15 G Salsi Yamaha +1 lap 16 Sergio Baroncini Ducati +1 lap Ret Michel Rougerie AMF Harley-Davidson Harley-Davidson Retired Ret Mimmo Cazzaniga Kawasaki Retired Ret Christian Leon König Motorenbau König Retired Ret Virginio Ferrari Paton Retired Ret R Bianconcini Suzuki Retired Ret Roberto Gallina Suzuki Retired Ret Adu Celso-Santos Carvalho Racing Yamaha Retired Ret Barry Sheene Suzuki Motor Company Suzuki Retired Ret G Barzanti Yamaha Retired Ret Guido Mandracci Yamaha Retired Ret Jack Findlay Yamaha Retired Ret Mario Necchi Yamaha Retired Ret Pentti Korhonen Yamaha Retired DNS Teuvo Länsivuori Suzuki Motor Company Suzuki Did not start DNS Chas Mortimer Sarome Racing Yamaha Did not start Sources:

References