PORSCHE RACING HISTORYJean-Robert Corthay (CH)
1975
4 May 1975 - Spa 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 911 Carrera RSR | GT | Jean-Robert Corthay (CH)/Georges Morand (CH) | Ecurie Rolloise | DNF | 33rd | Engine |
15 June 1975 - Le Mans 24 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 68 | Porsche 911 Carrera RS | GTS | Guy Verrier (F)/Florian Vetsch (CH)/Jean-Robert Corthay (CH) | Guy Verrier (F) | DNF | 41st | 91 laps - Head Gasket |
28 September 1975 - Monza 6 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 26 | Porsche 911 Carrera RSR | GT3.0 | Jean-Robert Corthay (CH)/Georges Morand (CH)/ Weabey () | Ecurie Rolloise (CH) | 10th | 10th | 19th | 174 laps |