The 1991 San Marino motorcycle Grand Prix was the twelfth round of the 1991 Grand Prix motorcycle racing season. It took place on the weekend of 16–18 August 1991 at the Mugello Circuit.

500 cc race report 5th pole of the season for Kevin Schwantz. Wayne Rainey gets the start from Wayne Gardner, Schwantz and Mick Doohan.

Rainey and Doohan get away, Doohan superior on the brakes at the end of the straight. Schwantz is a close 3rd.

Rainey drops Doohan, who is caught by Schwantz.

500 cc classification Pos. Rider Team Manufacturer Time/Retired Points 1 Wayne Rainey Marlboro Team Roberts Yamaha 46:08.566 20 2 Kevin Schwantz Lucky Strike Suzuki Suzuki +2.946 17 3 Mick Doohan Rothmans Honda Team Honda +6.066 15 4 Wayne Gardner Rothmans Honda Team Honda +23.218 13 5 Niall Mackenzie Sonauto Yamaha Mobil 1 Yamaha +33.205 11 6 John Kocinski Marlboro Team Roberts Yamaha +37.614 10 7 Juan Garriga Ducados Yamaha Yamaha +39.280 9 8 Didier de Radiguès Lucky Strike Suzuki Suzuki +39.566 8 9 Doug Chandler Roberts B Team Yamaha +52.121 7 10 Jean Philippe Ruggia Sonauto Yamaha Mobil 1 Yamaha +1:15.609 6 11 Eddie Laycock Millar Racing Yamaha +1 Lap 5 12 Marco Papa Cagiva Corse Cagiva +1 Lap 4 13 Cees Doorakkers HEK-Baumachines Honda +1 Lap 3 14 Michael Rudroff Rallye Sport Honda +1 Lap 2 15 Hans Becker Team Romero Racing Yamaha +1 Lap 1 16 Josef Doppler Doppler Racing Yamaha +1 Lap 17 Romolo Balbi Honda +1 Lap 18 Andreas Leuthe Librenti Corse Suzuki +2 Laps 19 Helmut Schutz Rallye Sport Honda +2 Laps Ret Sito Pons Campsa Honda Team Honda Retirement Ret Michele Valdo Team Paton Paton Retirement Ret Eddie Lawson Cagiva Corse Cagiva Retirement Ret Adrien Morillas Sonauto Yamaha Mobil 1 Yamaha Retirement DNQ Nicholas Schmassman Schmassman Technotron Honda Did not qualify DNQ Larry Moreno Vacondio Honda Did not qualify Sources:

References