| 1982 · Trofeo Filippo Caracciolo, Monza | 11 | 96 | 2. GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 924 Carrera GTR | — | 125 | WSPR historical record |
| 1982 · The Pace Petroleum 6 Hours, Silverstone | retired | 91 | GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 924 Carrera GTR | — | 122 | WSPR historical record |
| 1982 · Rudolf Caracciola Wanderpreis 1000 Kilometres, Nürburgring | retired | 66 | GT | Formel Rennsport Club, Zuri | Edi Kofel · Peter Zbinden · Marco Vanoli | Porsche 924 Carrera GTR | — | 17 | WSPR historical record |
| 1982 · Trophee Diners Club 1000 kilometres, Spa-Francorchamps | 19 | 93 | 3. GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 924 Carrera GTR | — | 120 | WSPR historical record |
| 1982 · Trofeo Banca Toscana 1000 kilometres, Mugello | 11 | 27 | 1. GT | Forme Rennsport Club, Zuric | Edi Kofel · Peter Zbinden · Marco Vanoli | Porsche 924 Carrera GTR | — | 147 | WSPR historical record |
| 1982 · Shell Oils 1000 Kilometres, Brands Hatch | retired | 35 | GT | Formel Rennsport Club, Zuri | Edi Kofel · Peter Zbinden | Porsche 924 Carrera GTR | — | 21 | WSPR historical record |
| 1981 · Flying Tigers 1000, Brands Hatch | entry_only | 45 | GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 924 Carrera GTR | — | | WSPR historical record |
| 1981 · Mugello 6 Hours | 13 | 34 | 3. GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel · Marco Vanoli | Porsche 924 Carrera GTR | — | 151 | WSPR historical record |
| 1981 · 1000 km Monza | retired | 27 | GT | Formel Rensport Club, Zuric | Peter Zbinden · Edi Kofel | Porsche 924 Carrera GTR | — | 50 | WSPR historical record |
| 1981 · Silverstone 6 Hours | 9 | 33 | 1. GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel · Marco Vanoli | Porsche 924 Carrera GTR | — | 194 | WSPR historical record |
| 1981 · 1000 km Nürburgring | 18 | 44 | 3. GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 924 Carrera GTR | — | 14 | WSPR historical record |
| 1981 · XXI. Coppa Florio, 6 ore Enna-Pergusa | entry_only | - | GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 924 Carrera GTR | — | | WSPR historical record |
| 1980 · Mugello 6 Hours | entry_only | 39 | GT | Formal Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 934 | — | | WSPR historical record |
| 1980 · Silverstone 1000 | retired | 30 | GT | Formel Rennsports Club, Zur | Peter Zbinden · Edi Kofel | Porsche 934 | — | 85 | WSPR historical record |
| 1980 · Nürburgring 1000 Kilometres | entry_only | 75 | GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 934 | — | | WSPR historical record |
| 1979 · Dijon 6 Hours | 7 | 48 | 1. GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 934 | — | 226 | WSPR historical record |
| 1979 · Rivet Supply 6 Hours, Silverstone | 6 | 24 | 2. GT | Formel Rennsport Club, Zuri | Peter Zbinden · Edi Kofel | Porsche 934 | — | 210 | WSPR historical record |
| 1979 · 25th 1000 km Nürburgring | retired | 41 | GT | Basilea | Peter Zbinden · Edi Kofel | Porsche 934 | — | | WSPR historical record |
| 1979 · Trofeo Ignazio Giunti, Vallelunga | 11 | 51 | 3. Gr.5 | Basilea | Peter Zbinden · Edi Kofel | Porsche 934 | — | 226 | WSPR historical record |
| 1978 · 6 h Dijon | did_not_start | 33 | GT | Basilea | Peter Zbinden · Edi Kofel | Porsche 934 | — | | WSPR historical record |
| 1978 · 1000 km Nürburgring | 18 | 41 | 3. GT | Basilea | Peter Zbinden · Edi Kofel | Porsche 934 | — | 39 | WSPR historical record |
| 1977 · ADAC 1000 km Nürburgring | retired | 38 | GT | Basilea | Peter Zbinden · Edi Kofel | Porsche Carrera RS | — | 10 | WSPR historical record |
| 1977 · Hessen Preis, Hockenheim | 9 | 22 | 2. GT | Basilea | Peter Zbinden · Edi Kofel | Porsche Carrera RSR | — | 149 | WSPR historical record |
| 1976 · ADAC 1000 Kilometres, Nürburgring | 12 | 43 | 4. GT | Basilea | Peter Zbinden · Edi Kofel | Porsche Carrera RS | — | 43 | WSPR historical record |
| 1976 · Martha 1000, Zeltweg 6 Hours, Österreichring | 3 | 5 | 1. GT | GVEA | Claude Haldi · Peter Zbinden | Porsche 934/5 Turbo | — | 182 | WSPR historical record |
| 1975 · 1000 km Nürburgring | 21 | 61 | 9. GT+1.6 | Porsche Club Romand | Peter Zbinden · Roger Dorchy | Porsche Carrera RSR | — | 37 | WSPR historical record |
| 1974 · 1000 km Monza | did_not_qualify | 89 | GT3.0 | Porsche Club Romand | Bernard Cheneviére · Peter Zbinden | Porsche Carrer | — | | WSPR historical record |
| 1974 · 1000 km Spa | 9 | 45 | 5. GT | Porsche Club Romand | Bernard Cheneviére · Peter Zbinden | Porsche Carrer | — | 60 | WSPR historical record |
| 1974 · 1000-km-Rennen Nürburgring | 22 | 48 | 8. GT+1.6 | Porsche Club Romand | Bernard Cheneviére · Peter Zbinden | Porsche Carrer | — | 28 | WSPR historical record |
| 1974 · 1000 km Imola | retired | 142 | GT3.0 | Porsche Club Romand | Mario Ilotte · Peter Zbinden · DNS - Claude Haldi | Porsche Carrera RSR | — | 37 | WSPR historical record |
| 1974 · 1000 km Zeltweg, Österreichring | 17 | 37 | 8. GT+2.0 | Porsche Club Romand | Bernard Cheneviére · Peter Zbinden · Edy Brandenberger | Porsche Carrer | — | 140 | WSPR historical record |
| 1974 · 1000 km Zeltweg, Österreichring | entry_only | 30 | GT+2.0 | Basilea | Peter Zbinden · Edy Brandenberger | Porsche Carrer | — | | WSPR historical record |
| 1974 · 1000 km Le Castellet | retired | 45 | GT | Porsche Club Romand | Bernard Cheneviére · Peter Zbinden | Porsche Carrer | — | 47 | WSPR historical record |
| 1973 · Vallelunga 6 Hours | retired | 32 | GT | Porsche Club Romand | Bernard Cheneviére · Peter Zbinden | Porsche Carrer | — | 130 | WSPR historical record |
| 1973 · Dijon 1000 Kilometres | 11 | 28 | 3. GT | Porsche Club Romand | Bernard Cheneviére · Peter Zbinden | Porsche Carrer | — | 257 | WSPR historical record |
| 1973 · Monza 1000 Kilometres | 9 | 88 | 2. GT3.0 | Porsche Club Romand | Bernard Cheneviére · Peter Zbinden · DNS - Claude Haldi | Porsche Carrer | — | 140 | WSPR historical record |
| 1973 · 57th Targa Florio | 8 | 113 | 2. GT+2.0 | Porsche Club Romand | Peter Zbinden · Mario Ilotte | Porsche Carrer | — | 10 | WSPR historical record |
| 1973 · ADAC 1000 Kilometres, Nürburgring | retired | 48 | GT+1.6 | Porsche Club Romand | Peter Zbinden · Serge Bolomey · Klaus Fritzinger | Porsche Carrer | — | | WSPR historical record |