2015
ADAC Zurich 24 Hours of Nürburgring SP8T class
1st
2000
24h Nürburgring Nordschleife
3rd
1996
Porsche Carrera Cup Germany
3rd
1995
Porsche Carrera Cup Germany
1st
1994
Porsche Carrera Cup Germany
2nd
1993
24 Hours of Spa-Francorchamps
2nd
1991
24 Hours of Spa-Francorchamps
2nd
1988
Fuji Long Distance Series LD-1
3rd
1986
Porsche 944 Turbo Cup
3rd
1984
Deutsche Produktionswagen Meisterschaft
3rd
1981
World Championship for Drivers and Makes
2nd
1978
World Championship for Makes Silverstone 6 Hours
3rd
1976
World Championship for Makes 6 Hours of Vallelunga
2nd