PORSCHE RACING HISTORYKarl-Adolf Kneip (D)
1975
15 June 1975 - Interserie Mainz-Finthen - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 55 | Porsche 906 | 906-155 | Div.II | Karl-Adolf Kneip (D) | Karl-Adolf Kneip (D) | DNF |
17 August 1975 - Interserie Kassel-Calden - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 906 | 906-155 | Div.II | Karl-Adolf Kneip (D) | DNS |
24 August 1975 - Interserie Zandvoort - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 47 | Porsche 906 Spyder | 906-155 | Div.II | Karl-Adolf Kneip (D) | K.-Adolf Kneip (D) | 18th | DNF |