1989 / Interserie
Apr
23
1989 Interserie Hungaroring
Hungaroring
Jun
18
1989 Interserie Zeltweg
Zeltweg Airfield
Jul
9
1989 Interserie Wunstorf
Wunstorf Airfield
Aug
13
1989 Interserie Most
Autodrom Most
Aug
27
1989 Interserie Siegerland
Siegerlandring
Oct
15
1989 Interserie Zeltweg 2
Zeltweg Airfield