38 week of 1991

Circuit/Rally Championship Date Winers Chassis
United Kingdom Brands Hatch Brytyjska Formuła Renault 1991.09.22 Martini MK61 - Renault
France Circuit de la Sarthe Międzynarodowe Mistrzostwa Formuły 3000 1991.09.22 Reynard 91D - Brown Mugen
French Formula 3 Championship 1991.09.22 Ralt - Volkswagen
Porsche Carrera Cup France 1991.09.22 Porsche 964
Portugal Circuito do Estoril Formula One World Championship 1991.09.22 Williams FW14 - Renault
Formuła Opel Euroseries 1991.09.22 Lotus 17 - Opel
United States Elkhart Lake Indy Car World Series 1991.09.22 Lola T9100 - Chevy
France Le Castellet FIM Endurance World Championship 1991.09.22 Kawasaki
United States Road America Barber-Saab 1991.09.22 Mondiale - Saab
Trans-Am Series 1991.09.21 Chevrolet Camaro
United Kingdom Silverstone Circuit Brytyjska Formuła 3000 1991.09.22 Lola T90/50 - Cosworth
United Kingdom Snetterton Motor Racing Circuit Formula Vauxhall Championship 1991.09.22
Formula Vauxhall Junior Championship 1991.09.22
United Kingdom Thruxton Circuit British Touring Car Championship (BTCC) 1991.09.22 BMW M3
Brytyjska Formuła Ford 1991.09.22 Reynard 91FF - Ford
United States Watkins Glen IMSA GT Championship 1991.09.22 Nissan 300ZX
Mexico Zacatecas Mexican Formula Three Championship 1991.09.22 Reynard 903 - Volkswagen
Qatar Rajd Kataru Middle East Rally Championship 1991.09.20 Toyota Celica GT-4
Yugoslavia Rajd YU European Rally Championship 1991.09.22 Ford Sierra RS Cosworth 4x4