| 23.3.1975 | 1000 km Mugello | 46 | #911 460 9074 | Schön / Borri / Pelit | Jolly Club | DNF |
| 23.3.1975 | 1000 km Mugello | 53 | | Vittorio Benvenuti | Vittorio Benvenuti | DNA |
| 23.3.1975 | DARM Zolder [GT] | 351 | | Jürgen Kannacher | Porsche Krefeld | 3rd |
| 23.3.1975 | DARM Zolder [GT] | 352 | #911 460 9068 | Eugen Kiemele | Eugen Kiemele | 2nd |
| 23.3.1975 | DARM Zolder [GT] | 353 | | Franz Konrad | Scuderia Tenutonia e. V. | 4th |
| 23.3.1975 | DARM Zolder [GT] | 355 | | Richard Leder | Firestone International | 5th |
| 23.3.1975 | DARM Zolder [GT] | 357 | #911 460 9078 | Eberhard Sindel | Rallyegemeinschaft Ulm | 1st |
| 30.3.1975 | Nürburgring [GT/T] | 1 | #911 460 9077? | Tim Schenken | GELO-Racing-Team | 2nd |
| 30.3.1975 | Nürburgring [GT/T] | 19 | #911 360 0636 | Jürgen Lässig | Autohaus Max Moritz GmbH | 7th |
| 30.3.1975 | Nürburgring [GT/T] | | #911 560 9121 | Hartwig Bertrams | Tebernum-Porsche-Racing-Team | 6th |
| 30.3.1975 | Nürburgring [GT/T] | | #911 460 9078 | Eberhard Sindel | Rallyegemeinschaft Ulm | 9th |
| 30.3.1975 | Nürburgring [GT/T] | | #911 460 9095 | Richard Leder | Richard Leder | 10th |
| 31.3.1975 | Nürburgring Goodyear Pokal | 1 | #911 460 9077? | Tim Schenken | GELO-Racing-Team | 2nd |
| 31.3.1975 | Nürburgring Goodyear Pokal | 19 | #911 360 0636 | Jürgen Lässig | Autohaus Max Moritz GmbH | 11th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | #911 460 9078 | Eberhard Sindel | Rallyegemeinschaft Ulm | 7th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | #911 460 9095 | Richard Leder | Richard Leder | 10th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | #911 560 9121 | Hartwig Bertrams | Tebernum-Porsche-Racing-Team | 13th |
| 6.4.1975 | 800 km Dijon | 8 | #911 560 9121 | Schickentanz / Bertrams / Wisell | Tebernum Porsche Racing | 7th |
| 6.4.1975 | 800 km Dijon | 27 | #911 460 9059 | Borras / Moisson | Henri Cachia | DNQ |
| 6.4.1975 | 800 km Dijon | 30 | | Chateau / Cayeux | Jean-Louis Chateau | DNQ |
| 6.4.1975 | Aspern [T/GT] | 32 | | Willy Rabl | Baustoff Racing Team | raced |
| 13.4.1975 | DARM Hockenheim [GT+2.0/T+2.0] | | #911 460 9060 | Reinhardt Stenzel | Team Foto-Quelle Max Moritz-Racing | 2nd |
| 13.4.1975 | Euro GT Imola | | | Kenneth Leim | Team Bla Racing | 7th |
| 13.4.1975 | Euro GT Imola | | | Godard | | 6th |
| 13.4.1975 | Euro GT Imola | | | Toine Hezemans | Gelo Racing Team Georg Loos | raced |
| 13.4.1975 | DARM Hockenheim [GT+2.0/T+2.0] | | | Richard Leder | Richard Leder | 6th |
| 13.4.1975 | DARM Hockenheim [GT+2.0/T+2.0] | | #911 360 0760 | Hubert Schmidt | MSC Calw | ?th |
| 13.4.1975 | Euro GT Imola | | | Vittorio Benvenuti | | raced |
| 13.4.1975 | Euro GT Imola | | #911 460 9074 | Schön | | raced |
| 13.4.1975 | Euro GT Imola | | | "Tambauto" | | 16th |
| 13.4.1975 | Euro GT Imola | | #911 560 9121 | Hartwig Bertrams | Tebernum Porsche | DQ |
| 13.4.1975 | DARM Hockenheim [GT+2.0/T+2.0] | | #911 460 9068 | Eugen Kiemele | Eugen Kiemele | ?th |
| 13.4.1975 | DARM Hockenheim [GT+2.0/T+2.0] | | | Franz Konrad | Franz Konrad | ?th |
| 20.4.1975 | 100 mile Road Atlanta I | 4 | | Hurley Haywood | | DNA |
| 20.4.1975 | 100 mile Road Atlanta II | 4 | | Hurley Haywood | | DNA |
| 20.4.1975 | 100 mile Road Atlanta I | 6 | | Hurley Haywood | | 3rd |
| 20.4.1975 | 100 mile Road Atlanta II | 6 | | Hurley Haywood | | 2nd |
| 20.4.1975 | 100 mile Road Atlanta I | 23 | #911 360 0727 | Charlie Kemp | Armorall Racing Team | 27th |
| 20.4.1975 | 100 mile Road Atlanta II | 23 | #911 360 0727 | Charlie Kemp | Armorall Racing Team | 5th |
| 20.4.1975 | 100 mile Road Atlanta I | 43 | #911 560 9112 | John O'Steen | | 37th |
| 20.4.1975 | 100 mile Road Atlanta II | 43 | #911 560 9112 | John O'Steen | | 6th |
| 20.4.1975 | 100 mile Road Atlanta II | 54 | #911 460 0100 | John Tunstall | | DNA |
| 20.4.1975 | 100 mile Road Atlanta I | 54 | #911 460 0100 | John Tunstall | | DNA |
| 20.4.1975 | 1000 km Monza | 73 | #911 460 9074 | Schön / Pelit | Jolly Club | DNS |
| 20.4.1975 | 1000 km Monza | 75 | | Berruto / Fossati | Scuderia Brescia Corse | DNQ |
| 20.4.1975 | 100 mile Road Atlanta II | 76 | | Norm Ridgely | | 10th |
| 20.4.1975 | 100 mile Road Atlanta I | 76 | | Norm Ridgely | | 11th |
| 20.4.1975 | 1000 km Monza | 78 | #911 460 9077 | Fitzpatrick / Hezemans / Schurti | Gelo Racing Team | 7th |
| 20.4.1975 | 1000 km Monza | 81 | #911 560 9121 | Schickentanz / Bertrams / Wisell | Tebernum Porsche Racing Team | 9th |
| 20.4.1975 | 1000 km Monza | 85 | | Gabriele Serblin | Gabriele Serblin | DNQ |
| 20.4.1975 | Coupes USA | | | Chateau | | 1st |
| 20.4.1975 | Coupes USA | | | Claude Ballot-Léna | | 2nd |
| 20.4.1975 | Coupes USA | | | Striebig | | 3rd |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 4 | | Siegmund Ogrodowczyk | Jägermeister Kremer Team | DNA |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 5 | #911 460 9060 | Reinhardt Stenzel | Foto-Quele Max Moritz Racing Team | 3rd |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 6 | #911 360 0636 | Jürgen Lässig | Autohaus Max Moritz GmbH | DNS |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 7 | #911 560 9121 | Hartwig Bertrams | Tebernum-Porsche Racing-Team | 7th |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 9 | | Franz-Josef Weißkopf | Tebernum-Porsche Racing-Team | DNA |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 10 | #911 460 9078 | Eberhard Sindel | Rallyegemeinschaft Ulm | 9th |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 11 | | Lothar Wagner | Balafre-Lancome Racing | DNA |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 20 | | Wolfgang Kauwertz | Wolfgang Kauwertz | DNA |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 22 | | Anton Stocks | Anton Stocks | DNF |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 23 | | Jürgen Kannacher | Jürgen Kannacher | 14th |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 24 | | Horst Kloft | Horst Kloft | DNA |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 35 | #911 460 9095 | Richard Leder | Richard Leder | 11th |
| 28.4.1975 | Knutstorp | 6 | | Jan Lundgardh | Team Dinitrol Center Sweden | 3rd |
| 28.4.1975 | Knutstorp | 16 | | Kenneth Leim | Team Blå Racing | 5th |
| 28.4.1975 | Knutstorp | 17 | | Roland Larsson | Team Västkuststugan | 1st |
| 4.5.1975 | 100 mile Laguna Seca II | 5 | #911 360 0601 | Bob Harmon | Bob Harmon | 12th |
| 4.5.1975 | 100 mile Laguna Seca I | 5 | #911 360 0601 | Bob Harmon | Bob Harmon | 12th |
| 4.5.1975 | 100 mile Laguna Seca I | 13 | #911 360 1099 | Randolph Townsend | | 13th |
| 4.5.1975 | 100 mile Laguna Seca II | 13 | #911 360 1099 | Randolph Townsend | | 13th |
| 4.5.1975 | 100 mile Laguna Seca II | 23 | #911 360 0727 | Charlie Kemp | Armorall Racing Team | 7th |
| 4.5.1975 | 100 mile Laguna Seca I | 23 | #911 360 0727 | Charlie Kemp | Armorall Racing Team | 6th |
| 4.5.1975 | 1000 km Spa | 40 | #911 560 9121 | Bertrams / Wisell | Tebernum Racing | 8th |
| 4.5.1975 | 100 mile Laguna Seca I | 43 | #911 560 9112 | John O'Steen | Ecurie Escargot | 7th |
| 4.5.1975 | 100 mile Laguna Seca II | 43 | #911 560 9112 | John Graves | Ecurie Escargot | 19th |
| 4.5.1975 | 1000 km Spa | 45 | #911 460 9077 | Hezemans / Schenken / Fitzpatrick | Gelo Racing | 9th |
| 4.5.1975 | 1000 km Spa | 46 | #911 360 1045 | Ekberg / Simonsen | Vaeskustugan | DNF |
| 4.5.1975 | 1000 km Spa | 48 | #911 360 0885 | Hubert Striebig | Striebig | DNA |
| 4.5.1975 | 1000 km Spa | 50 | | Chateau / Cayeux | Chateau | DNS |
| 4.5.1975 | 100 mile Laguna Seca II | 81 | #911 460 0016 | Elliot Forbes-Robinson | | 3rd |
| 4.5.1975 | 100 mile Laguna Seca I | 81 | #911 460 0016 | Elliot Forbes-Robinson | | 3rd |
| 4.5.1975 | DARM Sembach [GT] | | #911 460 9068 | Eugen Kiemele | Eugen Kiemele | 4th |
| 4.5.1975 | DARM Sembach [GT] | | | Manfred Borbonus | Manfred Borbonus | 7th |
| 4.5.1975 | DARM Sembach [GT] | | #911 460 9078 | Eberhard Sindel | Rallye Gemeinschaft Ulm | 1st |
| 4.5.1975 | DARM Sembach [GT] | | #911 460 9062 | Günther Chrzanowski | Günter Chrzanowski | 3rd |
| 10.5.1975 | 6 h Riverside | 5 | #911 360 0601 | Harmon / Woodner | - | 34th |
| 10.5.1975 | 6 h Riverside | 23 | #911 360 0727 | Kemp / Baird | Armorall Racing Team | 4th |
| 10.5.1975 | 6 h Riverside | 43 | #911 560 9112 | O'Steen / Helmick | - | 7th |
| 10.5.1975 | 6 h Riverside | 79 | #911 360 0756 | Callas / Gang | - | 12th |
| 10.5.1975 | 6 h Riverside | 81 | #911 460 0016 | Forbes-Robinson / Minter | Pharr West | 5th |
| 11.5.1975 | MEZ MR CZ Havířov | 17 | | Willy Rabl | | 2nd |
| 11.5.1975 | Mantorp Park | | | Jan Lundgardh | Hässelholms MK | ?th |
| 11.5.1975 | Saarlouis [GT] | | | Richard Leder | Richard Leder | 3rd |
| 11.5.1975 | Saarlouis [Main] | | | Richard Leder | Richard Leder | 2nd |
| 11.5.1975 | Mantorp Park | | | Roland Larsson | Falkenbergs MK | 2nd |
| 11.5.1975 | Saarlouis [GT] | | | Heinz-Jörgen Dahmen | Heinz-Jürgen Dahmen | 2nd |
| 18.5.1975 | DARM Salzburgring [T+2.0/GT] | | #911 460 9068 | Eugen Kiemele | Eugen Kiemele | ?th |
| 18.5.1975 | DARM Salzburgring [T+2.0/GT] | | | Richard Leder | Richard Leder | ?th |