| 1991 · FIA SWC - Trofeo Mexico, Hermanos Rodriguez | 3 | 14 | | Team Salamin Primagaz (Joes | Bernd Schneider · "John Winter" | Porsche 962C | — | 94 | WSPR historical record |
| 1990 · FIA WSPC - Fuji Film Cup, Suzuka Circuit | 16 | 9 | 2 | Joest Porsche Racing | Stanley Dickens · "John Winter" | Porsche 962C | — | 76 | WSPR historical record |
| 1990 · FIA WSPC - Trofeo Caracciolo, Monza | retired | 9 | | Joest Porsche Racing | "John Winter" · Stanley Dickens | Porsche 962C | — | 77 | WSPR historical record |
| 1990 · FIA WSPC - British Empire Trophy, Silverstone | retired | 9 | | Joest Porsche Racing | Stanley Dickens · "John Winter" | Porsche 962C | — | 3 | WSPR historical record |
| 1990 · FIA WSPC - Coupes de Spa, Spa Francorchamps | 16 | 9 | | Joest Porsche Racing | Stanley Dickens · "John Winter" | Porsche 962C | — | 65 | WSPR historical record |
| 1990 · FIA WSPC, Dijon-Prenios | retired | 9 | | Joest Porsche Racing | "John Winter" · Stanley Dickens | Porsche 962C | — | 57 | WSPR historical record |
| 1990 · FIA WSPC - ADAC Sportwagen WM, Nürburgring | 12 | 9 | | Joest Porsche Racing | "John Winter" · Stanley Dickens | Porsche 962C | — | 100 | WSPR historical record |
| 1990 · FIA WSPC - Shell Donington Trophy | 14 | 9 | | Joest Porsche Racing | Henri Pescarolo · "John Winter" | Porsche 962C | — | 113 | WSPR historical record |
| 1990 · FIA WSPC Mondial Players Ltd., Montreal | 13 | 9 | | Joest Porsche Racing | Henri Pescarolo · "John Winter" | Porsche 962C | — | 59 | WSPR historical record |
| 1990 · FIA WSPC - Trofeo Hermanos Rodriguez, Mexico | 8 | 9 | | Joest Porsche Racing | Henri Pescarolo · "John Winter" | Porsche 962C | — | 103 | WSPR historical record |
| 1988 · 800 km Jerez | 5 | 8 | C1 | Joest Racing | Frank Jelinski · "John Winter" | Porsche 962C | — | 183 | WSPR historical record |
| 1988 · Fuji 1000 Kilometres, Fuji Speedway | 3 | 8 | 3. C1 | Joest Racing | Frank Jelinski · "John Winter" | Porsche 962C | — | 221 | WSPR historical record |
| 1988 · 360 km Jarama | 8 | 8 | 7. C1 | Joest Racing | Frank Jelinski · "John Winter" | Porsche 962C | — | 103 | WSPR historical record |
| 1988 · 1000 km Monza | 4 | 8 | 4. C1 | Joest Racing | Frank Jelinski · "John Winter" | Porsche 962C | — | 168 | WSPR historical record |
| 1988 · Autosport 1000 Kilometres, Silverstone | 5 | 8 | 5. C1 | Joest Racing | Frank Jelinski · "John Winter" · Stanley Dickens | Porsche 962C | — | 198 | WSPR historical record |
| 1988 · Grand Prix ČSSR, Automodrom Brno | 5 | 7 | 5. C1 | Blaupunkt Joest Racing | Bob Wollek · "John Winter" | Porsche 962C | — | 66 | WSPR historical record |
| 1988 · 1000 km Brands Hatch | retired | 8 | C1 | Joest Racing | Frank Jelinski · "John Winter" | Porsche 962C | — | 131 | WSPR historical record |
| 1988 · ADAC 1000 km Nürburgring | 4 | 8 | 4. C1 | Joest Racing | Frank Jelinski · "John Winter" | Porsche 962C | — | 194 | WSPR historical record |
| 1988 · 1000 km Spa | retired | 8 | C1 | Joest Racing GmbH | "John Winter" · Frank Jelinski | Porsche 962C | — | 115 | WSPR historical record |
| 1987 · Mount Fuji 1000 Kilometres | 5 | 8 | 5. C1 | Joest Racing | "John Winter" · Frank Jelinski · Bob Wollek · DNS - Stanley Dickens | Porsche 962C | — | 218 | WSPR historical record |
| 1987 · 1000 km Monza | 4 | 8 | 4. C1 | Joest Racing | "John Winter" · Stanley Dickens · Klaus Ludwig | Porsche 962C | — | 167 | WSPR historical record |
| 1987 · 200 Meilen von Nürnberg - Int. ADAC-Norisring-Trophäe | 3 | 8 | C1 | Joest Racing | "John Winter" · Stanley Dickens | Porsche 962C | — | 150 | WSPR historical record |
| 1987 · Int. ADAC-1000-km-Rennen, Nürburgring | 4 | 8 | 4. C1 | Joest Racing | Frank Jelinski · "John Winter" · Stanley Dickens | Porsche 962C | — | 212 | WSPR historical record |
| 1987 · Kouros 1000 km Spa | 6 | 8 | 6. C1 | Joest Racing | Frank Jelinski · Stanley Dickens · "John Winter" · DNS - Bob Wollek | Porsche 962C | — | 138 | WSPR historical record |
| 1986 · Coppa Kouros, Monza | retired | 8 | C1 | Joest Racing | Marc Duez · "John Winter" · DNS - Paolo Barilla | Porsche 956 | — | 60 | WSPR historical record |
| 1986 · 100 Meilen von Nürnberg, Norisring | 8 | 8 | 8. C1 | Joest Racing | "John Winter" | Porsche 956 | — | 76 | WSPR historical record |
| 1986 · Shell Gemini 1000 km Brands Hatch | 5 | 8 | 5. C1 | Joest Racing | Paolo Barilla · "John Winter" · Klaus Ludwig | Porsche 956 | — | 230 | WSPR historical record |
| 1986 · ADAC Kouros 1000 km Nürburgring | retired | 8 | C1 | Joest Racing | Piercarlo Ghinzani · Kris Nissen · "John Winter" | Porsche 956 | — | 22 | WSPR historical record |
| 1986 · Kouros 1000 Kilometres Spa | 8 | 8 | 8. C1 | Joest Racing | "John Winter" · Vern Schuppan · Kris Nissen | Porsche 956 | — | 139 | WSPR historical record |
| 1986 · Mount Fuji 1000 Kilometres, Fuji Speedway | 5 | 8 | 5. C1 | Joest Racing | Kris Nissen · "John Winter" · Harald Grohs | Porsche 956 | — | 223 | WSPR historical record |
| 1985 · Malaysia 800 Selangor, Shah Alam | did_not_start | 8 | C1 | Joest Racing | Paolo Barilla · "John Winter" | Porsche 956 | — | | WSPR historical record |
| 1985 · Duschfrish ADAC 1000 Kilometres, Hockenheim | retired | 8 | C1 | Joest Racing | "John Winter" · Franz Konrad · DNS - Jürgen Weiler | Porsche 956 | — | 55 | WSPR historical record |
| 1985 · 1000 km Spa | 6 | 8 | 6. C1 | Joest Racing | "John Winter" · Marc Duez · Volker Weidler | Porsche 956 | — | 120 | WSPR historical record |
| 1985 · Fuji 1000 Kilometres | retired | 7 | C1 | Newman Joest Racing | Paolo Barilla · "John Winter" · Marc Duez | Porsche 956B | — | 9 | WSPR historical record |
| 1985 · Fuji 1000 Kilometres | retired | 8 | C1 | Newman Joest Racing | Mauricio DeNarvaez · Paul Belmondo · "John Winter" | Porsche 956 | — | 2 | WSPR historical record |
| 1984 · Kyalami 1000 Kilometres | 9 | 12 | 3. C1 | Joest Racing | Pescarolo · Schornstein · "John Winter" | Porsche 956 | — | 187 | WSPR historical record |
| 1984 · Sandown Park 1000 Kilometres | 11 | 12 | C1 | Joest Racing | "John Winter" · Paul Belmondo · Dieter Schornstein | Porsche 956 | — | 184 | WSPR historical record |
| 1984 · Grand Prix International 1000 Kilometres, Silverstone | 9 | 12 | 9. C1 | Schornstein Racing Team | Dieter Schornstein · Volkert Merl · "John Winter" | Porsche 956 | — | 198 | WSPR historical record |
| 1984 · ADAC 1000 Kilometres, Nürburgring | 10 | 12 | 0. C1 | D. S. Porsche Racing Team | Volkert Merl · "John Winter" · Dieter Schornstein | Porsche 956 | — | 194 | WSPR historical record |
| 1984 · British Aerospace 1000 Kilometres, Brands Hatch | 9 | 12 | 9. C1 | Schornstein Racing Team | Volkert Merl · Dieter Schornstein · "John Winter" | Porsche 956 | — | 217 | WSPR historical record |
| 1984 · Rothmans Spa 1000 Kilometres, Spa | 8 | 12 | 8. C1 | Joest Racing/Schornstein | Hans Heyer · Dieter Schornstein · "John Winter" | Porsche 956 | — | 137 | WSPR historical record |
| 1984 · 1000 Kilometres di Imola | 7 | 12 | 7. C1 | Joest Racing | Hans Heyer · "John Winter" · Dieter Schornstein | Porsche 956 | — | 190 | WSPR historical record |
| 1983 · Trophee Diners Club 1000 Kilometres, Spa-Francorchamps | 8 | 15 | 8. C | Joest Racing | Dieter Schornstein · "John Winter" · Jean-Michel Martin | Porsche 936C | — | 127 | WSPR historical record |
| 1983 · Castrol 1000 km Kyalami | 4 | 12 | 4. C | Joest Racing | Dieter Schornstein · "John Winter" · Bob Wollek | Porsche 956 | — | 228 | WSPR historical record |
| 1979 · Rivet Supply 6 Hours, Silverstone | entry_only | 6 | Gr.5 | Kremer Racing | Axel Plankenhorn · "John Winter" | Porsche 935/77A | — | | WSPR historical record |
| 1979 · Rivet Suply 6 hours, Brands Hatch | retired | 28 | Gr.5 | Porsche Kremer Racing | Claude Bourgoignie · "John Winter" · DNS - Klaus Ludwig | Porsche 935 K3 | — | 100 | WSPR historical record |
| 1978 · 17th Annual 24 Hours of Daytona Camel GT Challenge | 5 | 14 | 3. GTX | Kremer Porsche Racing | Josef Brambring · Dieter Schornstein · "John Winter" | Porsche 935 Tu | — | 635 | WSPR historical record |
| 1978 · 6 h Mugello | 7 | 8 | 7. Gr.5 | Porsche Kremer Racing | Dieter Schornstein · "John Winter" · Bob Wollek · DNS - Henri Pescarolo | Porsche 935/77 | — | 169 | WSPR historical record |
| 1978 · 6 h Dijon | 6 | 3 | 6. Gr.5 | Porsche Kremer Racing | Dieter Schornstein · "John Winter" · DNS - Henri Pescarolo | Porsche 935/77 | — | 157 | WSPR historical record |
| 1978 · 6 h Silverstone | 5 | 9 | 5. Gr.5 | Porsche Kremer Racing | Dieter Schornstein · "John Winter" · Bob Wollek | Porsche 935/77 | — | 219 | WSPR historical record |
| 1978 · 1000 km Nürburgring | retired | 5 | Gr.5 | Porsche Kremer Racing | Dieter Schornstein · "John Winter" · DNS - Bob Wollek | Porsche 935/77 | — | 3 | WSPR historical record |
| 1978 · 6 h Vallelunga | 6 | 6 | 6. Gr.5 | Porsche Kremer Racing | Dieter Schornstein · "John Winter" · DNS - Bob Wollek | Porsche 935/77 | — | 247 | WSPR historical record |