| 2003 · 2003 24 Hours of Le Mans | 43 DNF | 66 | GTS | Konrad Motorsport | Franz Konrad · Toni Seiler · Walter BrunFranz Konrad Toni Seiler Walter Brun | Saleen S7 -R | Ford 7.0L V8 | 91 | Wikipedia contributors · CC BY-SA 4.0 |
| 2002 · 2002 24 Hours of Le Mans | 26 | 66 | LMGTS | Konrad Motorsport | Terry Borcheller · Toni Seiler · Franz KonradTerry Borcheller Toni Seiler Franz Konrad | Saleen S7-R | Ford 6.9 L V8 | 266 | Wikipedia contributors · CC BY-SA 4.0 |
| 2002 · 2002 24 Hours of Le Mans | DNF | 67 | LMGTS | Konrad Motorsport | Walter BrunWalter Brun Charles Slater Rodney Mall | Saleen S7-R | Ford 6.9 L V8 | 83 | Wikipedia contributors · CC BY-SA 4.0 |
| 2001 · 2001 24 Hours of Le Mans | DNF | 61 | LMGTS | Konrad Motorsport | Walter Brun · Toni SeilerWalter Brun Toni Seiler Charles Slater | Saleen S7-R | Ford 6.9 L V8 | 4 | Wikipedia contributors · CC BY-SA 4.0 |
| 2000 · 2000 24 Hours of Le Mans | 14 | 60 | LMGTS | Konrad Motorsport | Tommy KendallCharles Slater Tommy Kendall Jürgen von Gartzen | Porsche 911 GT2 | Porsche 3.8 L Turbo Flat-6 | 317 | Wikipedia contributors · CC BY-SA 4.0 |
| 2000 · 2000 24 Hours of Le Mans | DNF | 20 | LMP900 | Konrad Motorsport | Jan LAMMERS · Tom Coronel · Peter KoxJan Lammers Tom Coronel Peter Kox | Lola B2K/10 | Ford - Roush 6.0 L V8 | 38 | Wikipedia contributors · CC BY-SA 4.0 |
| 1999 · 1999 24 Hours of Le Mans | 18 | 64 | LM-GTS | Konrad Motorsport | Franz KonradFranz Konrad Peter Kitchak Charles Slater | Porsche 993 GT2 | Porsche M64/81 3.7L F6 twin turbo | 294 | Wikipedia contributors · CC BY-SA 4.0 |
| 1998 · 1998 24 Hours of Le Mans | DNF | 70 | LM-GT2 | Konrad Motorsport | Franz KonradFranz Konrad Larry Schumacher Nick Ham | Porsche 911 GT2 | Porsche M64/81 3.6L F6 twin turbo | 24 | Wikipedia contributors · CC BY-SA 4.0 |
| 1998 · 1998 24 Hours of Le Mans | DNF | 73 | LM-GT2 | Konrad Motorsport | Toni SeilerToni Seiler Peter Kitchak Angelo Zadra | Porsche 911 GT2 | Porsche M64/81 3.6L F6 twin turbo | 2 | Wikipedia contributors · CC BY-SA 4.0 |
| 1997 · 1997 24 Hours of Le Mans | DNF | 28 | LM-GT1 | Konrad Motorsport | Franz Konrad · Mauro BaldiFranz Konrad Mauro Baldi Robert Nearn | Porsche 911 GT1 | Porsche 9R1 3.2L F6 twin turbo | 138 | Wikipedia contributors · CC BY-SA 4.0 |
| 1997 · 1997 24 Hours of Le Mans | DNF | 79 | LM-GT2 | Konrad Motorsport | Toni SeilerToni Seiler Michel Ligonnet Larry Schumacher | Porsche 911 GT2 | Porsche M64/81 3.6L F6 twin turbo | 126 | Wikipedia contributors · CC BY-SA 4.0 |
| 1996 · 1996 24 Hours of Le Mans | DNF | 37 | LM-GT1 | Konrad Motorsport | Franz KonradFranz Konrad Antonio de Azevedo Herrmann Wido Rössler | Porsche 911 GT2 Evo | Porsche M64/83 3.6L F6 twin turbo | 107 | Wikipedia contributors · CC BY-SA 4.0 |
| 1994 · 1994 24 Hours of Le Mans | 10 | 59 | LM-GT2 | Konrad Motorsport | Cor Euser · Patrick HuismanCor Euser Patrick Huisman Matjaž Tomlje | Porsche 911 Carrera RSR | Porsche M64 3.8L F6 | 295 | Wikipedia contributors · CC BY-SA 4.0 |
| 1994 · 1994 24 Hours of Le Mans | Res | 71 | LM-GT2 | Konrad Motorsport | Franz KonradFranz Konrad | Porsche 911 Carrera RSR | Porsche M64 3.8L F6 | | Wikipedia contributors · CC BY-SA 4.0 |
| 1993 · 1993 24 Hours of Le Mans | 19 | 62 | Category 4 | Konrad Motorsport | Franz KonradFranz Konrad Jun Harada Antônio de Azevedo Hermann | Porsche 911 Carrera RSR | Porsche M64 3.8L F6 | 293 | Wikipedia contributors · CC BY-SA 4.0 |
| 1992 · 1992 24 Hours of Le Mans | DNA | 11 | Category 1 | Konrad Motorsport | Franz KonradFranz Konrad | Konrad KM-011 | Lamborghini LE3512 3.5L V12 | | Wikipedia contributors · CC BY-SA 4.0 |
| 1991 · 1991 24 Hours of Le Mans | DNF | 21 | Category 2 | Konrad Motorsport | Franz Konrad · Anthony ReidFranz Konrad Anthony Reid Pierre-Alain Lombardi | Porsche 962C | Porsche 935 3.2L F6 twin turbo | 98 | Wikipedia contributors · CC BY-SA 4.0 |
| 1991 · FIA SWC - Castrol BRDC Empire Trophy, Silverstone | retired | 21 | | Konrad Motorsport | Franz Konrad · Tiff Needell | Porsche 962C | — | 35 | WSPR historical record |
| 1991 · FIA SWC - ADAC Sportwagen WM, Nürburgring | 9 | 57 | | Konrad Motorsport | Harald Becker · Franz Konrad | Porsche 962C | — | 87 | WSPR historical record |
| 1991 · FIA SWC - ADAC Sportwagen WM, Nürburgring | did_not_qualify | 21 | | Konrad Motorsport | Franz Konrad · Stefan Johansson | Konrad KM-011 Lambor | — | | WSPR historical record |
| 1991 · FIA SWC Magny Cours | retired | 21 | | Konrad Motorsport | Stefan Johansson · Franz Konrad | Konrad KM 011 Lambor | — | 18 | WSPR historical record |
| 1991 · FIA SWC - Trofeo Mexico, Hermanos Rodriguez | retired | 21 | | Konrad Motorsport | Stefan Johansson · Franz Konrad | Konrad KM 011 Lambor | — | 36 | WSPR historical record |
| 1991 · FIA Sportscar World Championship in Autopolis | retired | 21 | 1 | Konrad Motorsport | Franz Konrad · Stefan Johansson | Konrad KM 011 Lambor | — | 24 | WSPR historical record |
| 1990 · FIA WSPC - Fuji Film Cup, Suzuka Circuit | 19 | 32 | 2 | Konrad Motorsport | Franz Konrad · Jean-Louis Ricci | Porsche 962C | — | 75 | WSPR historical record |
| 1990 · FIA WSPC - Trofeo Caracciolo, Monza | retired | 32 | | Konrad Motorsport | Franz Konrad · Almo Coppelli | Porsche 962C | — | 7 | WSPR historical record |
| 1990 · FIA WSPC - British Empire Trophy, Silverstone | 14 | 32 | | Konrad Motorsport | Franz Konrad · Harri Toivonen | Porsche 962C | — | 93 | WSPR historical record |
| 1990 · FIA WSPC - Coupes de Spa, Spa Francorchamps | 13 | 32 | | Konrad Motorsport | Franz Konrad · Harri Toivonen | Porsche 962C | — | 65 | WSPR historical record |
| 1990 · FIA WSPC, Dijon-Prenios | 20 | 32 | | Konrad Motorsport | Franz Konrad · Harri Toivonen | Porsche 962C | — | 116 | WSPR historical record |
| 1990 · FIA WSPC - ADAC Sportwagen WM, Nürburgring | 14 | 32 | | Konrad Motorsport | Franz Konrad · Harri Toivonen | Porsche 962C | — | 100 | WSPR historical record |
| 1990 · FIA WSPC - Shell Donington Trophy | 16 | 32 | | Konrad Motorsport | Franz Konrad · Harri Toivonen | Porsche 962C | — | 112 | WSPR historical record |
| 1990 · FIA WSPC Mondial Players Ltd., Montreal | 22 | 32 | | Konrad Motorsport | Franz Konrad · Harri Toivonen | Porsche 962C | — | 52 | WSPR historical record |