| 17.6.1990 | 24 h Le Mans | 6 | 962 C | Pescarolo / Ricci / Laffite | Joest Porsche Racing | 14th |
| 17.6.1990 | 24 h Le Mans | 7 | 962 C | Stuck / Jelinski / Bell | Joest Porsche Racing | 4th |
| 17.6.1990 | 24 h Le Mans | 8 | 962 C | Palmer / Wollek / Alliot | Joest Porsche Racing | DNS |
| 17.6.1990 | 24 h Le Mans | 9 | 962 C | Wollek / Dickens / "Winter" | Joest Porsche Racing | 8th |
| 17.6.1990 | 24 h Le Mans | 10 | 962 CK6 | van der Merwe / Takahashi / Okada | Porsche Kremer Racing | 24th |
| 17.6.1990 | 24 h Le Mans | 11 | 962 CK6 | de Dryver / Alliot / Gonin | Porsche Kremer Racing | 16th |
| 17.6.1990 | 24 h Le Mans | 15 | 962 C | Huysman / Sigala / Santal | Brun Motorsport | 10th |
| 17.6.1990 | 24 h Le Mans | 16 | 962 C | Larrauri / Pareja / Brun | Brun Motorsport | DNF |
| 17.6.1990 | 24 h Le Mans | 16T | 962 C | Oscar Larrauri | Brun Motorsport | T-car |
| 17.6.1990 | 24 h Le Mans | 18 | 962 C | Katsunori Iketani | Team Davey | DNA |
| 17.6.1990 | 24 h Le Mans | 19 | 962 C | Cohen-Olivar / Iketani / Lee-Davey | Team Davey | 26th |
| 17.6.1990 | 24 h Le Mans | 20 | 962 C | Lee-Davey / Lavaggi / Cohen-Olivar | Team Davey | 19th |
| 17.6.1990 | 24 h Le Mans | 26 | 962 C | Oppermann / Grohs / Duez | Obermaier Racing | DNF |
| 17.6.1990 | 24 h Le Mans | 26T | 962 C | | Obermaier Racing | unused |
| 17.6.1990 | 24 h Le Mans | 27 | 962 C | Altenbach / Yver / Lässig | Obermaier Racing | 9th |
| 17.6.1990 | 24 h Le Mans | 43 | 962 C GTi | Reuter / Weaver / Lehto | Richard Lloyd Racing | DNF |
| 17.6.1990 | 24 h Le Mans | 44 | 962 C | Watson / Giacomelli / Berg | Richard Lloyd Racing | 11th |
| 17.6.1990 | 24 h Le Mans | 45 | 962 C | Sears / Needell / Reid | Alpha Racing Team | 3rd |
| 17.6.1990 | 24 h Le Mans | 55 | 962 C | Elgh / Danielsson / Mezera | Team Schuppan | 15th |
| 17.6.1990 | 24 h Le Mans | 63 | 962 C | Fouché / Andskar / Kasuya | Trust Racing Team | 13th |
| 17.6.1990 | 24 h Nürburgring | 218 | 911 Carrera | Schenker / Ulrich / Angelastri | Ulrich Motorsport | 66th |
| 17.6.1990 | 24 h Nürburgring | 219 | 944 Turbo | Busch-Ridder / Wagner / Wagner | Löhr & Becker | 22nd |
| 17.6.1990 | 24 h Nürburgring | 221 | 911 Carrera | Tilke / Dören / Döbler / Neumann | Team Matter Sicherheit | 8th |
| 17.6.1990 | 24 h Nürburgring | 222 | 944 Turbo | "hpl liemans" / Gallas / Lischke | | 25th |
| 17.6.1990 | 24 h Nürburgring | 223 | 944 Turbo | Schnell / Thoma / Janitschek / Hämmerle | | DNF |
| 17.6.1990 | 24 h Nürburgring | 224 | 911 Carrera | Alzen / Alzen / Mühlbauer / Dorr | | DNF |
| 17.6.1990 | 24 h Le Mans | 230 | 962 C | Moretti / Gebhardt / Adams | Momo Gebhardt Racing | DNF |
| 24.6.1990 | 300 km Mosport [GT] | 50 | 911 | Bartling / Hochreuter / Brezinka | Rudy Bartling | DNA |
| 24.6.1990 | 300 km Mosport [GT] | 72 | 911 | Kjoller / Mooney | Jay Kjoller Motorsports | 8th |
| 24.6.1990 | 300 km Mosport [GT] | 89 | 911 | Hendricks / Jones | Dynamic Air Cond | 12th |
| 1.7.1990 | 500 km Watkins Glen | 16 | 962 C | Weaver / Haywood | Dyson Racing | 2nd |
| 1.7.1990 | 500 km Watkins Glen | 30 | 962 C | Moretti / Bell | Momo-Gebhardt | 6th |
| 15.7.1990 | Interserie Zeltweg | 1 | 962 C | Walter Lechner | Walter Lechner Racing School | 3rd |
| 15.7.1990 | Interserie Zeltweg | 2 | 962 C | Franz Konrad | Franz Konrad Motorsport | DNF |
| 15.7.1990 | Interserie Zeltweg | 4 | 962 C | Walter Brun | Repsol-Brun Motorsport | 4th |
| 15.7.1990 | Zeltweg National | 6 | 935 | Gerhard Möser | | raced |
| 15.7.1990 | Interserie Zeltweg | 6 | 962 CK6 | Giovanni Lavaggi | Porsche Kremer Racing | 2nd |
| 15.7.1990 | 300 km Sears Point | 6 | 962 C | Bruce Canepa | Canepa Motorsports | 18th |
| 15.7.1990 | Interserie Zeltweg | 7 | 962 C | Heinz-Jörgen Dahmen | Heinz-Jürgen Dahmen | DNF |
| 15.7.1990 | Interserie Zeltweg | 10 | 962 CK6 | Bernd Schneider | Porsche Kremer Racing | 1st |
| 15.7.1990 | Interserie Zeltweg | 14 | 962 C | Willy König | Koenig Specials Tuning | 9th |
| 15.7.1990 | 300 km Sears Point | 16 | 962 C | James Weaver | Dyson Racing | 5th |
| 15.7.1990 | Interserie Zeltweg | 26 | 962 C | Jürgen Oppermann | Obermaier Primagaz | 5th |
| 22.7.1990 | Interserie Brands Hatch | 1 | 962 C | Walter Lechner | Walter Lechner Racing School | 1st |
| 22.7.1990 | 500 mile Fuji | 1 | 962 C | Takahashi / Mogi | Advan Alpha Nova | DNF |
| 22.7.1990 | 500 mile Fuji | 2 | 962 C | Sears / Hoy | Alpha Racing | DNF |
| 22.7.1990 | 480 km Dijon | 6 | 962 C | Pescarolo / Ricci | Joest Porsche Racing | 9th |
| 22.7.1990 | Interserie Brands Hatch | 7 | 962 C | Heinz-Jörgen Dahmen | Heinz Jorgen Dahmen | 5th |
| 22.7.1990 | 500 mile Fuji | 7 | 962 C | Needell / Bell | The Alpha Racing | 5th |
| 22.7.1990 | 480 km Dijon | 7 | 962 C | Wollek / Jelinski | Joest Porsche Racing | 7th |
| 22.7.1990 | 480 km Dijon | 8 | 962 C | Palmer / Hobbs | Joest Porsche Racing | 8th |
| 22.7.1990 | 480 km Dijon | 9 | 962 C | Dickens / "Winter" | Joest Porsche Racing | DNF |
| 22.7.1990 | 480 km Dijon | 10 | 962 CK6 | van der Merwe | Porsche Kremer Racing | 24th |
| 22.7.1990 | 480 km Dijon | 11 | 962 CK6 | Giovanni Lavaggi | Porsche Kremer Racing | unused |
| 22.7.1990 | 480 km Dijon | 14 | 962 C GTi | Reuter / Weaver | Richard Lloyd Racing | DNF |
| 22.7.1990 | 480 km Dijon | 15 | 962 C | Larrauri / Huysman | Brun Motorsport | 12th |
| 22.7.1990 | 480 km Dijon | 16 | 962 C | Pareja / Brun | Brun Motorsport | 11th |
| 22.7.1990 | 480 km Dijon | 17 | 962 C | Santal / Brun | Brun Motorsport | 16th |
| 22.7.1990 | 480 km Dijon | 19 | 962 C | Reid / Barth | Porsche Kremer Racing (Convector) | 18th |
| 22.7.1990 | 480 km Dijon | 20 | 962 C | Lee-Davey | Team Davey | DNF |
| 22.7.1990 | 500 mile Fuji | 20 | 962 C GTi | Berg / Totani | Alpha Cubic With RLR | DNS |
| 22.7.1990 | 480 km Dijon | 26 | 962 C | Yver / Grohs | Obermaier Racing | DNF |
| 22.7.1990 | 500 mile Fuji | 27 | 962 C | Weidler / Nakaya / Hane | From A Racing | DNF |
| 22.7.1990 | 480 km Dijon | 27 | 962 C | Altenbach / Grohs | Obermaier Racing | 17th |
| 22.7.1990 | 480 km Dijon | 32 | 962 C | Konrad / Toivonen | Konrad Motorsport | 20th |
| 22.7.1990 | 500 mile Fuji | 33 | 962 C | Herbert / Rydell | Takefuji Racing Team | 4th |
| 22.7.1990 | 480 km Dijon | 33 | 962 C | Dauer / Unser | Konrad Motorsport (Dauer Racing) | 15th |
| 22.7.1990 | 480 km Dijon | 34 | 962 C | Alméras / Alméras | Equipe Alméras Frères | 23rd |
| 22.7.1990 | 480 km Dijon | 39 | 962 C | Salamin / Taverna | Swiss Team Salamin | 22nd |
| 22.7.1990 | 24 h Spa | 50 | 964 Carrera 2 | Bourgoignie / van Dalen / Neve | R.A.S. Sport | 6th |
| 22.7.1990 | 24 h Spa | 51 | 964 Carrera 2 | Pirnay / "Davit" / Lubin | R.A.S. Sport | 10th |
| 22.7.1990 | 24 h Spa | 52 | 964 Carrera 2 | Neve / Libert / de Jamblinne | R.A.S. Sport | 7th |
| 22.7.1990 | 24 h Spa | 53 | 964 Carrera 2 | Delcourt / Raes / Visconti | R.A.S. Sport | 8th |
| 22.7.1990 | 24 h Spa | 54 | 964 Carrera 2 | Dorr / Hardy / Schenk | R.A.S. Sport | DNF |
| 22.7.1990 | 500 mile Fuji | 55 | 962 C | Schuppan / Elgh / Mezera | Omron Racing Team | DNS |
| 22.7.1990 | 24 h Spa | 59 | 911 | van Peteghem / Herregods | Toison d'Or | DNA |
| 22.7.1990 | 24 h Spa | 60 | 964 Carrera 2 | Memminger / Leutwiler | Bernd Racing Team | 9th |
| 22.7.1990 | 24 h Spa | 85 | 944 | de Deyne / Mondron / de Radigues | Ecurie Bruxelloise | DNF |
| 22.7.1990 | 500 mile Fuji | 100 | 962 C GTi | Fouché / Andskar | Trust Racing Team | 2nd |
| 29.7.1990 | 300 km Portland | 16 | 962 C | James Weaver | Dyson Racing | 9th |
| 29.7.1990 | 300 km Portland | 30 | 962 C | Gianpiero Moretti | Momo-Gebhardt Racing | 16th |
| 29.7.1990 | 1 h 30 min Portland [GT] | 57 | 911 | Monte Shelton | | 18th |
| 12.8.1990 | Interserie Most | 1 | 962 C | Walter Lechner | Walter Lechner Racing School | 2nd |
| 12.8.1990 | Interserie Most | 6 | 962 CK6 | Bernd Schneider | Kremer Porsche Racing | 1st |
| 12.8.1990 | Interserie Most | 7 | 962 C | Heinz-Jörgen Dahmen | Heinz-Jörgen Dahmen | 6th |
| 12.8.1990 | Interserie Most | 10 | 962 CK6 | Bernd Schneider | Kremer Porsche Racing | T-car |
| 12.8.1990 | Interserie Most | 14 | 962 C | Willy König | Koenig Specials Tuning | 7th |
| 12.8.1990 | 500 km Kemora | 20 | 935 DP | Schrey / Schrey | - | DNA |
| 12.8.1990 | Interserie Most | 26 | 962 C | Jürgen Oppermann | Obermaier Primagaz | DNA |
| 19.8.1990 | 480 km Nürburgring | 7T | 962 C | Hans-Joachim Stuck | Joest Porsche Racing | T-car |
| 19.8.1990 | 480 km Nürburgring | 9 | 962 C | "Winter" / Dickens | Joest Porsche Racing | 12th |
| 19.8.1990 | 480 km Nürburgring | 14 | 962 C GTi | Reuter / Andskar | Richard Lloyd Racing | DNF |
| 19.8.1990 | 480 km Nürburgring | 15 | 962 C | Larrauri / Huysman | Brun Motorsport | 8th |
| 19.8.1990 | 480 km Nürburgring | 16 | 962 C | Brun / Pareja | Brun Motorsport | DNF |
| 19.8.1990 | 500 km Road America | 16 | 962 C | James Weaver | Dyson Racing | 4th |
| 19.8.1990 | 480 km Nürburgring | 27 | 962 C | Altenbach / Lässig | Obermaier Racing | 16th |
| 19.8.1990 | 480 km Nürburgring | 32 | 962 C | Konrad / Toivonen | Konrad Motorsport | 14th |
| 19.8.1990 | 480 km Nürburgring | 33 | 962 C | Raul Boesel | Konrad Motorsport (Dauer Racing) | 11th |
| 19.8.1990 | 480 km Nürburgring | 34 | 962 C | Alméras / Alméras | Equipe Almeras Freres | 19th |
| 19.8.1990 | 480 km Nürburgring | 39 | 962 C | Salamin / Cohen-Olivar | Swiss Team Salamin | 20th |