37 week of 1991

Circuit/Rally Championship Date Winers Chassis
Argentina Buenos Aires SudAm Formula 3 Championship 1991.09.15 Ralt RT33 - Mugen-Honda
Mexico Chihuahua Mexican Formula Three Championship 1991.09.15 Reynard 903 - Volkswagen
Belgium Circuit de Spa-Francorchamps Porsche Carrera Cup Germany 1991.09.15 Porsche 964 Carrera 2 Cup
United Kingdom Donington Park Brytyjska Formuła 3 1991.09.15 Ralt RT35 - Mugen-Honda
British Touring Car Championship (BTCC) 1991.09.15 Vauxhall Cavalier
Brytyjska Formuła Ford 1991.09.15 Reynard 91FF - Ford
Germany Hockenheimring Superbike World Championship 1991.09.15 Ducati 888
1991.09.15 Ducati 888
Motocyklowe Mistrzostwa Europy - 125cc 1991.09.15 Honda
Motocyklowe Mistrzostwa Europy - 250cc 1991.09.15 Aprilia
Mistrzostwa Europy Supersport 600 1991.09.15 Honda
United States Lexington CART Indy Lights Series 1991.09.15 March 86A - Buick
France Magny-Cours World Sportscar Championship 1991.09.15 Peugeot 905 Evo 1 Bis
United States Mesa Marin USAC National Formula Ford 2000 1991.09.14 Swift DB-6 - Ford
United States Mid-Ohio Sports Car Course Indy Car World Series 1991.09.15 Lola T9100 - Chevy
Mistrzostwa Toyota Atlantic 1991.09.14 Swift DB4 - Toyota
Trans-Am Series 1991.09.14 Oldsmobile Cutlass
Germany Singen DTM 1991.09.15 Audi V8 quattro DTM
1991.09.15 Audi V8 quattro DTM
Japan Sportsland SUGO All-Japan Formula 3 1991.09.15 TOMs 031F - Toyota
All Japan Sports Prototype Championship 1991.09.15 Toyota 91C-V
Italy Varano Italian Superturismo Championship 1991.09.15 BMW M3 Sport Evo
1991.09.15 BMW M3 Sport Evo
Mexico Veracruz Mexican Formula Two champions 1991.09.09 Ralt RT4 - Chrysler
United Kingdom Międzynarodowy Rajd Manx European Rally Championship 1991.09.13 Subaru Legacy RS
Kenya Rajd Równika African Rally Championship 1991.09.15 Subaru Legacy 4WD Turbo