PORSCHE RACING HISTORYHans Heyer (D)
1975 : Nürburgring 1000 Km - 1st in class : Supersprint Nürburgring - 2nd overall : Zolder [GT/T+2.0] - 1st overall
2 February 1975 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 911 Carrera RSR | 911 360 0610 | GTO | Juan Carlos Bolaños (MEX)/Michel Jourdain, Sr (MEX)/Hans Heyer (D) | Juan Carlos Bolanos (MEX) | 39th | 27th | 6th | 191 laps - Engine |
20 April 1975 - Monza 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 76 | Porsche 911 Carrera RSR | 911 560 9117 | GT3.0 | Helmut Kelleners (D)/Hans Heyer (D) | Jägermeister Kremer Racing (D) | DNF | 28th | 62 laps - Piston Rings |
1 June 1975 - Nürburgring 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 54 | Porsche 911 Carrera RSR | GT+1.6 | Helmut Kelleners (D)/Hans Heyer (D)/Bob Wollek (F) | Jägermeister-Kremer-Team (D) | 8th | 1st | 29th | 40 laps |
1 June 1975 - Nürburgring 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 55 | Porsche 911 Carrera RSR | 911 560 9117 | GT+1.6 | Hans Heyer (D)/Bob Wollek (F)/Reinhardt Stenzel (D) | Jägermeister-Kremer-Team (D) | DNF | 30th | 23 laps - DNF |
29 June 1975 - European GT Championship Norisring - European Championship for Grand Touring Cars
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 4 | Porsche 911 Carrera RSR | GT3.0 | Hans Heyer (D) | Vaillant Kremer Team (D) | 5th | 65 laps |
7 September 1975 - Supersprint Nürburgring - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 4 | Porsche 911 Carrera RSR | GT | Hans Heyer (D) | Jägermeister Kremer Team (D) | 2nd | 2nd |
19 October 1975 - Zolder [GT/T+2.0] - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 911 Carrera RSR | T/GT+2.0 | Hans Heyer (D) | Hans Heyer (D) | 1st | 1st | 28 laps |