| 21.3.1975 | 12 h Sebring | 1 | 911 Carrera RSR 3.0 | Keyser / Sprowls / Contreras | Toad Hall Racing | 13th |
| 21.3.1975 | 12 h Sebring | 4 | 911 Carrera RSR 3.0 | Dickinson / Webbe / Theodoracopulos | George Dickinson | 5th |
| 21.3.1975 | 12 h Sebring | 5 | 911 Carrera RSR | Harmon / Woodner | Bob Harmon | 7th |
| 21.3.1975 | 12 h Sebring | 8 | 911 Carrera RSR | Beasley / Jennings | Bob Beasley | 32nd |
| 21.3.1975 | 12 h Sebring | 14 | 911 Carrera RSR 3.0 | Holbert / Forbes-Robinson | Holbert's Porsche-Audi | 12th |
| 21.3.1975 | 12 h Sebring | 19 | 911 S | Bowles / Reynolds, Jr. | Aubrey R. Bowles | DNA |
| 21.3.1975 | 12 h Sebring | 23 | 911 Carrera RSR | Kemp / Baird | Armorall Racing Team | 25th |
| 21.3.1975 | 12 h Sebring | 30 | 911 Carrera RSR 3.0 | Dyer / Bienvenue | George Dyer | 2nd |
| 21.3.1975 | 12 h Sebring | 33 | 911 Carrera RSR | Quintanilla / Loring | Roberto Quintanilla | 46th |
| 21.3.1975 | 12 h Sebring | 43 | 911 Carrera RSR | Graves / O'Steen / Helmick | Ecurie Escargot | 3rd |
| 21.3.1975 | 12 h Sebring | 44 | 911 S | Garcia / Naon / Freyre | Montura Ranch Estates | 10th |
| 21.3.1975 | 12 h Sebring | 45 | 911 S | Ramirez / Mutiz / de Narváez | Delta Racing | 28th |
| 21.3.1975 | 12 h Sebring | 50 | 911 S | Vazquez / Quintana / Yenko | Pedro Vasquez, Jr. | 60th |
| 21.3.1975 | 12 h Sebring | 51 | 914/6 | Hotchkis / Kirby / Jones | Johnson-Bozzoni Porsche-Audi | 52nd |
| 21.3.1975 | 12 h Sebring | 54 | 911 Carrera RSR | Tunstall / Jenkins | Southpoint Porsche | 41st |
| 21.3.1975 | 12 h Sebring | 59 | 911 Carrera RSR 3.0 | Gregg / Haywood | Brumos Porsche-Audi | 53rd |
| 21.3.1975 | 12 h Sebring | 63 | 911 S | Punch / Waugh / Mendenhall | Doell Enterprises | 50th |
| 21.3.1975 | 12 h Sebring | 67 | 911 Carrera S | McClain / White | David McClain | 17th |
| 21.3.1975 | 12 h Sebring | 68 | 911 Carrera RSR | Febles / Cruz | Diego Febles Racing | 8th |
| 21.3.1975 | 12 h Sebring | 74 | 911 Carrera RSR | Ridgely / Heimrath | Ludwig Heimrath | 68th |
| 21.3.1975 | 12 h Sebring | 85 | 914/6 | Hulen / Coupland / Causey | John E. Hulen | 54th |
| 21.3.1975 | 12 h Sebring | 91 | 911 Carrera RSR 3.0 | Bolanos / Jourdain / Bolanos | Bolanos Racing | 4th |
| 21.3.1975 | 12 h Sebring | 92 | 911 Carrera RSR | Tillson / Oest | Oest-Tillson Racing | 16th |
| 21.3.1975 | 12 h Sebring | 95 | 911 Carrera RSR | Tabe / Marron / Martinez | Sergio Tabe | 55th |
| 21.3.1975 | 12 h Sebring | 914 | 914 | Schmid / Bundy | Holbert's Porsche-Audi | 29th |
| 23.3.1975 | 1000 km Mugello | 6 | 908/3-6 Turbo | Müller / van Lennep | Team Dr. Dannesberger | 3rd |
| 23.3.1975 | 1000 km Mugello | 7 | 908/3 Turbo | Kinnunen / Müller / van Lennep | Team Dr. Dannesberger | 16th |
| 23.3.1975 | 1000 km Mugello | 9 | 908/3 Turbo | Jöst / Casoni | Scuderia Nettuno Ovoro | DNF |
| 23.3.1975 | 1000 km Mugello | 11 | 908/3 | Barth / Kraus / Casoni | Scuderia Nettuno | 8th |
| 23.3.1975 | 1000 km Mugello | 19 | 906 | "Mascaleros" / Facca | Termoplaid | DNA |
| 23.3.1975 | 1000 km Mugello | 43 | 911 Carrera | Berruto / Ilotte | Scuderia Brescia Corse | DNA |
| 23.3.1975 | 1000 km Mugello | 44 | 911 Carrera RSR 3.0 | Schurti / Hezemans / Fitzpatrick | Gelo Racing Team | 9th |
| 23.3.1975 | 1000 km Mugello | 45 | 911 Carrera RSR | Fitzpatrick / Hezemans / Schurti | Gelo Racing Team | 11th |
| 23.3.1975 | 1000 km Mugello | 46 | 911 Carrera RSR | Schön / Borri / Pelit | Jolly Club | DNF |
| 23.3.1975 | 1000 km Mugello | 51 | 911 Carrera RSR | Bertrams / Schickentanz / Wisell | Tebernum Porsche Racing | 12th |
| 23.3.1975 | 1000 km Mugello | 52 | 911 Carrera RSR 3.0 | Schickentanz / Bertrams / Wisell | Tebernum Porsche Racing | 10th |
| 23.3.1975 | 1000 km Mugello | 53 | 911 Carrera RSR | Vittorio Benvenuti | Vittorio Benvenuti | DNA |
| 23.3.1975 | 1000 km Mugello | 54 | 911 Carrera RSR 3.0 | Haldi / Béring | Porsche Club Romand | DNF |
| 23.3.1975 | 1000 km Mugello | 56 | 911 Carrera RS | Vanoli / Pallavicini | Marco Vanoli | DNA |
| 23.3.1975 | 1000 km Mugello | 57 | 911 Carrera RSR 3.0 | Bonomelli / Rulon-Miller | Ennio Bonomelli | DNA |
| 23.3.1975 | DARM Zolder [GT] | 332 | 914/6 | Edgar Dören | Bergischer-Motor-Club | ?th |
| 23.3.1975 | DARM Zolder [GT] | 333 | 914/6 | Klaus Erle | Klaus Erle | raced |
| 23.3.1975 | DARM Zolder [GT] | 337 | 914/6 | Hans Christian Jürgensen | Hans Christian Jürgensen | ?th |
| 23.3.1975 | DARM Zolder [GT] | 340 | 914/6 | Peter Karl Nowak | Peter Karl Nowak | ?th |
| 23.3.1975 | DARM Zolder [GT] | 341 | 914/6 | Albrecht Schütz | Autohaus Max Moritz GmbH | raced |
| 23.3.1975 | DARM Zolder [GT] | 343 | 914/6 | Alberto Zirkel | Bergischer Motor Club | ?th |
| 23.3.1975 | DARM Zolder [GT] | 345 | 911 S | Günther Chrzanowski | Günther Chrzanowski | 8th |
| 23.3.1975 | DARM Zolder [GT] | 346 | 911 Carrera RSR 3.0 | Hans Forster | Hans Forster | DNA |
| 23.3.1975 | DARM Zolder [GT] | 347 | 911 Carrera | Hans Habermann | Hans Habermann | DNA |
| 23.3.1975 | DARM Zolder [GT] | 348 | 911 Carrera RSR 3.0 | Hans Halfmann | Rallye-Club Rheinhausen | 7th |
| 23.3.1975 | DARM Zolder [GT] | 349 | 911 Carrera | Gerhard Holup | Gerhard Holup | 6th |
| 23.3.1975 | DARM Zolder [GT] | 350 | 911 Carrera | Norbert van Huffel | Racing Team BIAAL | DNA |
| 23.3.1975 | DARM Zolder [GT] | 351 | 911 Carrera RSR | Jürgen Kannacher | Porsche Krefeld | 3rd |
| 23.3.1975 | DARM Zolder [GT] | 352 | 911 Carrera RSR | Eugen Kiemele | Eugen Kiemele | 2nd |
| 23.3.1975 | DARM Zolder [GT] | 353 | 911 Carrera RSR | Franz Konrad | Scuderia Tenutonia e. V. | 4th |
| 23.3.1975 | DARM Zolder [GT] | 354 | 911 Carrera | Herbert Kummle | Schwarzwälder Möbelversand | 10th |
| 23.3.1975 | DARM Zolder [GT] | 355 | 911 Carrera RSR | Richard Leder | Firestone International | 5th |
| 23.3.1975 | DARM Zolder [GT] | 357 | 911 Carrera RSR | Eberhard Sindel | Rallyegemeinschaft Ulm | 1st |
| 23.3.1975 | DARM Zolder [GT] | 358 | 911 Carrera RS | Dieter Schornstein | Dieter Schornstein | DNA |
| 23.3.1975 | DARM Zolder [GT] | 359 | 911 Carrera RS | Ralf-Dieter Schreiber | Ralf-Dieter Schreiber | 9th |
| 23.3.1975 | DARM Zolder [GT] | 361 | 911 S | Ernst Zupp | Ernst Zupp | raced |
| 30.3.1975 | Nürburgring [GT/T] | 1 | 911 Carrera RSR | Tim Schenken | GELO-Racing-Team | 2nd |
| 30.3.1975 | Nürburgring [GT/T] | 5 | 911 Carrera RS | Herbert Müller | Herbert Müller Racing | 11th |
| 30.3.1975 | Nürburgring [GT/T] | 19 | 911 Carrera RSR | Jürgen Lässig | Autohaus Max Moritz GmbH | 7th |
| 30.3.1975 | Nürburgring [GT/T] | 86 | 914/6 | Dieter Ankele | Autohaus Max Moritz GmbH | 6th |
| 30.3.1975 | Nürburgring [GT/T] | 87 | 914/6 | Edgar Dören | Bergischer Motor-Club im ADAC | 4th |
| 30.3.1975 | Nürburgring [GT/T] | 88 | 914/6 | Hans Christian Jürgensen | Hans-Christian Jürgensen | DNF |
| 30.3.1975 | Nürburgring [GT/T] | 89 | 914/6 | Wilhelm Siegle | Wilhelm Siegle | DNF |
| 30.3.1975 | Nürburgring [GT/T] | 90 | 914/6 | Rolf Färber | Rolf Färber | 11th |
| 30.3.1975 | Nürburgring [GT/T] | 91 | 914/6 | Horst Oberhemm | BMC Wuppertal | DNF |
| 30.3.1975 | Nürburgring [GT/T] | | 911 Carrera | Gerhard Holup | Gerhard Holup | 13th |
| 30.3.1975 | Nürburgring [GT/T] | | 911 Carrera RSR 3.0 | John Fitzpatrick | GELO-Racing-Team | 14th |
| 30.3.1975 | Nürburgring [GT/T] | | 911 Carrera RSR 3.0 | Helmut Kelleners | Jägermeister-Kremer-Team | 3rd |
| 30.3.1975 | Nürburgring [GT/T] | | 911 Carrera RSR 3.0 | Toine Hezemans | GELO-Racing-Team | 4th |
| 30.3.1975 | Nürburgring [GT/T] | | 911 Carrera RSR 3.0 | Clemens Schickentanz | Tebernum-Porsche-Racing-Team | 5th |
| 30.3.1975 | Nürburgring [GT/T] | | 911 Carrera RSR | Richard Leder | Richard Leder | 10th |
| 30.3.1975 | Nürburgring [GT/T] | | 911 Carrera RSR | Hartwig Bertrams | Tebernum-Porsche-Racing-Team | 6th |
| 30.3.1975 | Nürburgring [GT/T] | | 911 Carrera RSR 3.0 | Josef Brambring | Josef Brambring | 8th |
| 30.3.1975 | Nürburgring [GT/T] | | 911 Carrera RSR | Eberhard Sindel | Rallyegemeinschaft Ulm | 9th |
| 31.3.1975 | Nürburgring Goodyear Pokal | 1 | 911 Carrera RSR | Tim Schenken | GELO-Racing-Team | 2nd |
| 31.3.1975 | Nürburgring Goodyear Pokal | 5 | 911 Carrera RS | Herbert Müller | Herbert Müller Racing | 14th |
| 31.3.1975 | Nürburgring Goodyear Pokal | 19 | 911 Carrera RSR | Jürgen Lässig | Autohaus Max Moritz GmbH | 11th |
| 31.3.1975 | NTK Zandvoort | 64 | 911 Carrera RSR 3.0 | Cees Siewertsen | Wallys Jeans | 1st |
| 31.3.1975 | Nürburgring Goodyear Pokal | 86 | 914/6 | Dieter Ankele | Autohaus Max Moritz GmbH | 6th |
| 31.3.1975 | Nürburgring Goodyear Pokal | 87 | 914/6 | Edgar Dören | Bergischer Motor-Club im ADAC | 5th |
| 31.3.1975 | Nürburgring Goodyear Pokal | 88 | 914/6 | Hans Christian Jürgensen | Hans-Christian Jürgensen | DNF |
| 31.3.1975 | Nürburgring Goodyear Pokal | 89 | 914/6 | Wilhelm Siegle | Wilhelm Siegle | DNF |
| 31.3.1975 | Nürburgring Goodyear Pokal | 90 | 914/6 | Rolf Färber | Rolf Färber | DNF |
| 31.3.1975 | Nürburgring Goodyear Pokal | 91 | 914/6 | Horst Oberhemm | BMC Wuppertal | 14th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | 911 Carrera RSR | Hartwig Bertrams | Tebernum-Porsche-Racing-Team | 13th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | 911 Carrera RSR | Richard Leder | Richard Leder | 10th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | 911 Carrera RSR 3.0 | Clemens Schickentanz | Tebernum-Porsche-Racing-Team | 3rd |
| 31.3.1975 | Nürburgring Goodyear Pokal | | 911 Carrera RSR 3.0 | Josef Brambring | Kremer | 8th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | 911 Carrera RSR 3.0 | Helmut Kelleners | Jägermeister-Kremer-Team | 6th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | 911 Carrera RSR | Eberhard Sindel | Rallyegemeinschaft Ulm | 7th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | 911 Carrera RSR 3.0 | Toine Hezemans | GELO-Racing-Team | 4th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | 911 Carrera RSR 3.0 | John Fitzpatrick | GELO-Racing-Team | 5th |
| 6.4.1975 | 800 km Dijon | 7 | 908/3-6 Turbo | Müller / van Lennep | Dr. H. Dannesberger | 9th |
| 6.4.1975 | 800 km Dijon | 10 | 908/3 Turbo | Jöst / Casoni | Joest Racing | 2nd |
| 6.4.1975 | 800 km Dijon | 11 | 908/3 | Barth / Kraus | Joest Racing | DNF |