1990 / Interserie
May
4
1990 Interserie Hungaroring
Hungaroring
Jun
3
1990 Interserie Wunstorf
Wunstorf Airfield
Jul
15
1990 Interserie Zeltweg
Zeltweg Airfield
Jul
22
1990 Interserie Brands Hatch
Brands Hatch Indy Circuit
Aug
12
1990 Interserie Most
Autodrom Most
Sep
16
1990 Interserie Siegerland
Siegerlandring
Oct
14
1990 Interserie Zeltweg 2
Zeltweg Airfield