| 26.5.1975 | 100 mile Lime Rock II | 1 | #911 460 9049 | Michael Keyser | | DNS |
| 26.5.1975 | 100 mile Lime Rock I | 6 | | Hurley Haywood | | DNA |
| 26.5.1975 | 100 mile Lime Rock II | 6 | | Hurley Haywood | | DNA |
| 26.5.1975 | 100 mile Lime Rock I | 18 | | Bill Schmid | | 11th |
| 26.5.1975 | 100 mile Lime Rock II | 18 | | Bill Schmid | | 11th |
| 26.5.1975 | 100 mile Lime Rock I | 30 | #911 460 9048 | George Dyer | George Dyer | 13th |
| 26.5.1975 | 100 mile Lime Rock II | 61 | #911 560 9122 | Jim Busby | | 8th |
| 26.5.1975 | 100 mile Lime Rock II | 74 | #911 560 9123 | Ludwig Heimrath | | 25th |
| 26.5.1975 | 100 mile Lime Rock II | 75 | | Norm Ridgely | | 12th |
| 26.5.1975 | 100 mile Lime Rock I | 75 | | Norm Ridgely | | 14th |
| 1.6.1975 | 100 mile Mid-Ohio | 1 | #911 460 9049 | Michael Keyser | | 14th |
| 1.6.1975 | 100 mile Mid-Ohio | 6 | | Hurley Haywood | | 3rd |
| 1.6.1975 | 100 mile Mid-Ohio | 14 | #005 0009 | Al Holbert | | 1st |
| 1.6.1975 | 100 mile Mid-Ohio | 23 | #911 360 0727 | Charlie Kemp | Armorall Racing Team | 8th |
| 1.6.1975 | 100 mile Mid-Ohio | 30 | #911 460 9048 | George Dyer | George Dyer | 29th |
| 1.6.1975 | 100 mile Mid-Ohio | 43 | #911 560 9112 | John O'Steen | Ecurie Escargot | 6th |
| 1.6.1975 | 1000 km Nürburgring | 51 | | Fitzpatrick / Hezemans / Schurti | GELO-Racing-Team, Georg Loos KG | 9th |
| 1.6.1975 | 1000 km Nürburgring | 52 | #911 460 9063 | Hezemans / van Lennep / Ballot-Léna | GELO-Racing-Team, Georg Loos KG | 11th |
| 1.6.1975 | 1000 km Nürburgring | 53 | #911 460 9077 | Schurti / Ludwig | GELO-Racing-Team, Georg Loos KG | DNF |
| 1.6.1975 | 1000 km Nürburgring | 54 | #005 0005 | Heyer / Kelleners / Wollek | Jägermeister-Kremer-Team | 8th |
| 1.6.1975 | 1000 km Nürburgring | 55 | #911 560 9117 | Heyer / Wollek / Stenzel | Jägermeister-Kremer-Team | DNF |
| 1.6.1975 | 1000 km Nürburgring | 56 | #911 460 9073 | Schimpf / Fischhaber / Kelleners | Jägermeister-Kremer-Team | DNA |
| 1.6.1975 | 1000 km Nürburgring | 57 | | Brambring / Neuhaus | Josef Brambring | DNF |
| 1.6.1975 | 1000 km Nürburgring | 58 | #911 460 9067 | Schickentanz / Bertrams / Wisell | Tebernum-Porsche-Racing-Team | 14th |
| 1.6.1975 | 100 mile Mid-Ohio | 59 | | Peter Gregg | | 26th |
| 1.6.1975 | 1000 km Nürburgring | 59 | #911 560 9121 | Bertrams / Schickentanz / Wisell | Tebernum-Porsche-Racing-Team | DNF |
| 1.6.1975 | 1000 km Nürburgring | 60 | #911 460 9052 | Haldi / Béguin | Porsche-Club-Romand | 20th |
| 1.6.1975 | 1000 km Nürburgring | 61 | #911 460 9058 | Zbinden / Dorchy | Porsche-Club-Romand | 21st |
| 1.6.1975 | 100 mile Mid-Ohio | 61 | #911 560 9122 | Jim Busby | | 9th |
| 1.6.1975 | 1000 km Nürburgring | 62 | #004 0002 | Rulon-Miller / Waugh | Gante-Racing | DNF |
| 1.6.1975 | 1000 km Nürburgring | 63 | #911 360 1045 | Ekberg / Larsson | Team Västkuststugan-Porsche Kubero | 12th |
| 1.6.1975 | 1000 km Nürburgring | 64 | | Lundgardh / Simonsen | Team Dinitrol Center | DNF |
| 1.6.1975 | 1000 km Nürburgring | 66 | | Konrad / Kannacher | Jürgen Konrad | DNF |
| 1.6.1975 | 1000 km Nürburgring | 67 | | Kauwertz / Drees | Neußer Motorsportclub e.V. im ADAC | DNF |
| 1.6.1975 | 1000 km Nürburgring | 68 | #911 460 9078 | Sindel / Dören | Rallye-Gemeinschaft Ulm | 16th |
| 1.6.1975 | 1000 km Nürburgring | 69 | | Stocks / Holup | AMC Duisburg | 19th |
| 1.6.1975 | 100 mile Mid-Ohio | 74 | #911 560 9123 | Ludwig Heimrath | | 7th |
| 1.6.1975 | 100 mile Mid-Ohio | 75 | | Norm Ridgely | | DNA |
| 1.6.1975 | 100 mile Mid-Ohio | 95 | #911 460 9057 | Bob Hagestad | | 5th |
| 1.6.1975 | Trans-Am Kent | | | John Bauer | John Bauer | 4th |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 45 | #911 460 9067 | Clemens Schickentanz | Tebernum Porsche Racing | DNF |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 46 | #005 0005 | Helmut Kelleners | Jägermeister Kremer Team | 3rd |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 47 | #911 460 9060 | Reinhardt Stenzel | Foto Quele Max Moritz Racing Team | 4th |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 48 | | Anton Stocks | AMC Duisburg | 11th |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 49 | #005 0004 | Cees Siewertsen | Jägermeister Kremer Team | 6th |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 50 | #911 460 9095 | Richard Leder | Richard Leder | DNF |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 51 | #911 360 0636 | Jürgen Lässig | Autohaus Max Moritz GmbH | DNA |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 52 | #911 560 9121 | Hartwig Bertrams | Tebernum Porsche Racing Team | 5th |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 53 | | Josef Brambring | Josef Brambring | DNF |
| 8.6.1975 | Ronde Cévenole | | | Lunel | | 4th |
| 8.6.1975 | Ronde Cévenole | | | Rouget | | 13th |
| 8.6.1975 | Ronde Cévenole | | | Mas | | 3rd |
| 8.6.1975 | Ronde Cévenole | | | Labaune | | 12th |
| 8.6.1975 | Ronde Cévenole | | | Bec | | 5th |
| 14.6.1975 | 100 mile Mosport | 1 | #911 460 9049 | Michael Keyser | Toad Hall Racing | DNA |
| 14.6.1975 | 100 mile Mosport | 6 | | Hurley Haywood | G. W. Dickinson | 1st |
| 14.6.1975 | Kinnekulle | 6 | | Jan Lundgardh | Team Dinitrol | ?th |
| 14.6.1975 | 100 mile Mosport | 10 | | Marcel Talbot | Tamaco Industr. Ltd. | 12th |
| 14.6.1975 | 100 mile Mosport | 11 | | Hans Berner | Motex | 14th |
| 14.6.1975 | 100 mile Mosport | 14 | #005 0009 | Al Holbert | Holbert's Porsche+Audi | 9th |
| 14.6.1975 | Kinnekulle | 16 | | Kenneth Leim | Team Blå Racing | ?th |
| 14.6.1975 | Kinnekulle | 17 | | Roland Larsson | Team Västkuststugan | 3rd |
| 14.6.1975 | 100 mile Mosport | 23 | #911 360 0727 | Charlie Kemp | Armorall Racing Team | 5th |
| 14.6.1975 | 100 mile Mosport | 30 | #911 460 9048 | George Dyer | Dyer Racing | 7th |
| 14.6.1975 | 100 mile Mosport | 43 | #911 560 9112 | O'Steen / Graves / Miegel | Ecurie Escargot | DNA |
| 14.6.1975 | 100 mile Mosport | 59 | | Peter Gregg | Brumos Porsche+Audi | 4th |
| 14.6.1975 | 100 mile Mosport | 73 | #911 360 0588 R6 | Roberto Quintanilla | John McClelland | DNA |
| 14.6.1975 | 100 mile Mosport | 74 | #911 560 9123 | Ludwig Heimrath | Heimrath Racing | 3rd |
| 14.6.1975 | 100 mile Mosport | 75 | | Norm Ridgely | Ridgely Racing | 11th |
| 14.6.1975 | 100 mile Mosport | 95 | #911 460 9057 | Bob Hagestad | Bob Hagestad Porsche+Audi | 8th |
| 15.6.1975 | 24 h Le Mans | 9 | #911 460 9083 | Merello | Ecuador Marlboro Team | DNF |
| 15.6.1975 | 24 h Le Mans | 16 | #911 560 9121 | Schickentanz / Bertrams | Joest Racing | DNF |
| 15.6.1975 | 24 h Le Mans | 20 | #930 570 0023 | Béguin / Zbinden / Haldi | Porsche Club Romand | 15th |
| 15.6.1975 | 24 h Le Mans | 50 | #911 360 0885 | Striebig / Kirschoffer / Mauroy | Louis Meznarie | 28th |
| 15.6.1975 | 24 h Le Mans | 51 | | | Claude Haldi | DNA |
| 15.6.1975 | 24 h Le Mans | 52 | #911 460 9058 | Vollery / Dorchy / Chapuis | Ecurie du Nord | DNF |
| 15.6.1975 | 24 h Le Mans | 53 | #911 460 9059 | Borras / Moisson / Cachia | A.S.A. Cachia | 7th |
| 15.6.1975 | 24 h Le Mans | 54 | #911 460 9033 | Pallavicini / Vanoli | Angelo Pallavicini | DNQ |
| 15.6.1975 | 24 h Le Mans | 55 | #911 460 9051 | Ballot-Léna / Bienvenue | Ecurie Robert Buchet | 8th |
| 15.6.1975 | 24 h Le Mans | 56 | | Chenevière / Zbinden | Bernard Chenevière | DNA |
| 15.6.1975 | 24 h Le Mans | 57 | #004 0002 | Rulon-Miller / Waugh / Godard | Gante Racing | DNF |
| 15.6.1975 | 24 h Le Mans | 58 | #911 460 9065 | Fitzpatrick / Hezemans / van Lennep / Schurti / Loos | Gelo Racing Team | 5th |
| 15.6.1975 | 24 h Le Mans | 59 | #911 460 9077 | Schenken / Ganley | Gelo Racing Team | DNF |
| 15.6.1975 | 24 h Le Mans | 60 | #911 460 9040 | Schurti / Hezemans | Gelo Racing Team | DNF |
| 15.6.1975 | 24 h Le Mans | 61 | #911 360 1196 | Bussi / Metral | Ecurie Armagnac-Bigorre Gérard Méo | 23rd |
| 15.6.1975 | 24 h Le Mans | 62 | #911 460 9052 | Haldi / Fernandez / Perez / Chiribiga | Escuderia Montjuich | DNS |
| 15.6.1975 | 24 h Le Mans | 63 | #911 460 9018 | Béring / Godel / Utz | Porsche Club Romand | 19th |
| 15.6.1975 | 24 h Le Mans | 65 | #911 560 9117 | Sprowls / Bolanos / Contreras | Porsche Kremer | 9th |
| 15.6.1975 | 24 h Le Mans | 67 | #911 460 9031 | Verney / Tarnaud / Fontaine | Anny-Charlotte Verney | 11th |
| 15.6.1975 | 24 h Le Mans | 68 | #004 0004 | Vetsch / Verrier / Corthay | Guy Verrier | DNF |
| 15.6.1975 | 24 h Le Mans | 69 | #911 460 9072 | Faure / "Beurlys" / Cooper | "Beurlys" | 6th |
| 15.6.1975 | 24 h Le Mans | 70 | #911 350 1121 | Ravenel / Ravenel / Wauters | Les Maisons de Week-End | DNQ |
| 15.6.1975 | 24 h Le Mans | 71 | #911 360 0791 | Laplacette / Pigeon / Leroux | Joël Laplacette | 25th |
| 15.6.1975 | 24 h Le Mans | 77 | #911 460 9082 | Sabine / Dagoreau / Aeschlimann | Philippe Dagoreau | 17th |
| 15.6.1975 | 24 h Le Mans | 78 | | Wollek / Grandet | Ecurie Robert Buchet - Cyril Grandet | DQ |
| 15.6.1975 | 24 h Le Mans | 80 | | Touroul / Hesnault | X. Racing | 18th |
| 15.6.1975 | 24 h Le Mans | 83 | | "Segolen" / Gadal | Jean-Yves Gadal | DNF |
| 15.6.1975 | 24 h Le Mans | 84 | | Maurer / Beez / Strähl | Gerhard Maurer | 10th |
| 15.6.1975 | 24 h Le Mans | 87 | #911 360 0654 | Boubet / Dermagne | X. Racing | 20th |
| 15.6.1975 | 24 h Le Mans | 96 | #911 460 9029 | Nageotte / Picard | Bonnemaison - Thiaw | DNF |