PORSCHE RACING HISTORYRichard Leder (D)
1975 : Diepholz [GT] - 3rd overall
13 April 1975 - DARM Hockenheim [GT+2.0/T+2.0] - DARM - Deutscher Automobil-Rundstrecken-Pokal
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 911 Carrera RSR | 911 460 9095 | GT+2.0 | Richard Leder (D) | Richard Leder (D) | 6th | 5th |
8 June 1975 - DRM Hockenheim Rhein-Pokal - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 50 | Porsche 911 Carrera RSR | 911 460 9095 | Div.I | Richard Leder (D) | Richard Leder (D) | DNF | 111th | 6 laps |
29 June 1975 - European GT Championship Norisring - European Championship for Grand Touring Cars
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 19 | Porsche 911 Carrera RSR | 911 460 9095 | GT3.0 | Richard Leder (D) | Richard Leder (D) | 7th | 64 laps |
20 July 1975 - Diepholz [GT] - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 911 Carrera RSR | 911 460 9095 | GT+2.0 | Richard Leder (D) | Richard Leder (D) | 3rd | 3rd |
20 July 1975 - DRM Diepholz - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 911 Carrera RSR | 911 460 9095 | Div.1 | Richard Leder (D) | Richard Leder (D) | 4th | 4th | 7th | 40 laps |
17 August 1975 - DRM Kassel-Calden - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 63 | Porsche 911 Carrera RSR | 911 460 9095 | Div.1 | Richard Leder (D) | Richard Leder (D) | 10th | 10th | 16th | 38 laps |
31 August 1975 - DRM Hockenheim Preis der Nationen - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 22 | Porsche 911 Carrera RSR | 911 460 9095 | Div.1 | Richard Leder (D) | Richard Leder (D) | DNF | 13th | 20 laps |
7 September 1975 - Supersprint Nürburgring - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 10 | Porsche 911 Carrera RSR | 911 460 9095 | GT | Richard Leder (D) | Richard Leder (D) | 6th | 6th |
28 September 1975 - DRM Hockenheim Preis von Baden-Württemberg - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 911 Carrera RSR | 911 460 9095 | Div.1 | Richard Leder (D) | Richard Leder (D) | 10th | 10th | 15th | 24 laps |
29 November 1975 - Rheintal Hockenheim [GT] - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 911 Carrera RSR | GT+2.0 | Richard Leder (D) | Richard Leder (D) | 5th | 5th |