| 4.2.1990 | 24 h Daytona | 0 | 962 C | Jelinski / Pescarolo / Ricci | Joest Racing | 45th |
| 4.2.1990 | 24 h Daytona | 3 | 962 C | Larrauri / Brun / Sigala | Brun Motorsports | DNS |
| 4.2.1990 | 24 h Daytona | 10 | 962 | Adams / Hotchkis, Jr. / Hotchkis | Wynn's | 6th |
| 4.2.1990 | 24 h Daytona | 17 | 962 C | Boesel / Unser, Jr. / Unser | Dauer Racing | 27th |
| 25.2.1990 | GP Miami | 2 | 962 | Herzog / Haywood | Alucraft | 5th |
| 25.2.1990 | GP Miami | 16 | 962 C | Weaver / Pruett | Dyson Racing | 3rd |
| 25.2.1990 | GP Miami | 17 | 962 C | Boesel / Wollek | Dauer Racing | 21st |
| 25.2.1990 | GP Miami | 23 | 962 GTi | Adam / Seabroke | DSR Motorsports | 7th |
| 25.2.1990 | GP Miami | 30 | 962 | Bell / Moretti / Coppelli | Momo | 17th |
| 11.3.1990 | 500 km Fuji | 1 | 962 C | Takahashi / Mogi | Advan Alpha Nova | 8th |
| 11.3.1990 | 500 km Fuji | 2 | 962 C | Dickens / Hoy | Alpha Racing | 6th |
| 11.3.1990 | 500 km Fuji | 7 | 962 C | Needell / Los | The Alpha Racing | 10th |
| 11.3.1990 | 500 km Fuji | 19 | 962 C | Lee-Davey / Giacomelli | Team Davey | DNF |
| 11.3.1990 | 500 km Fuji | 20 | 962 C GTi | Totani / Pérez-Sala / Reuter | Alpha Cubic With RLR | DNF |
| 11.3.1990 | 500 km Fuji | 27 | 962 C | Weidler / Nakaya | From A Racing | 5th |
| 11.3.1990 | 500 km Fuji | 33 | 962 C | Wollek / Herbert | Takefuji Racing Team | DQ |
| 11.3.1990 | 500 km Fuji | 55 | 962 C | Elgh / Schuppan | Omron Racing Team | 11th |
| 11.3.1990 | 500 km Fuji | 100 | 962 C GTi | Fouché / Andskar | Trust Racing Team | 3rd |
| 17.3.1990 | 12 h Sebring | 0 | 962 C | "Winter" / Pescarolo / Wollek | Joest Racing | 11th |
| 17.3.1990 | 12 h Sebring | 2 | 962 | Haywood / Herzog / Schubot | René Herzog | 31st |
| 17.3.1990 | 12 h Sebring | 10 | 962 | Hotchkis / Adams / Hotchkis, Jr. | Hotchkis Racing | 4th |
| 17.3.1990 | 12 h Sebring | 16 | 962 C | Weaver / Pruett | Dyson Racing | DNS |
| 17.3.1990 | 12 h Sebring | 17 | 962 C | Boesel / Stuck | Dauer Racing | 14th |
| 17.3.1990 | 12 h Sebring | 23 | 962 GTi | Adam / Harrington | DSR Motorsports | 45th |
| 17.3.1990 | 12 h Sebring | 26 | 911 | Kraft | Alex Job | 49th |
| 17.3.1990 | 12 h Sebring | 50 | 911 | Bartling / Frank | Rudy Bartling | 44th |
| 17.3.1990 | 12 h Sebring | 86 | 962 C | Wollek / Dobson / van der Merwe | Bruce Leven | 40th |
| 1.4.1990 | 500 km Road Atlanta | 16 | 962 C | Weaver / Haywood | Dyson Racing | 5th |
| 1.4.1990 | 500 km Road Atlanta | 30 | 962 C | Moretti / Bell | Momo-Gebhardt Racing | 4th |
| 3.4.1990 | 1000 km Fuji | 1 | 962 C | Takahashi / Mogi | Advan Alpha Nova | NC |
| 3.4.1990 | 1000 km Fuji | 2 | 962 C | Dickens / Hoy / Takahashi | Alpha Racing | NC |
| 3.4.1990 | 1000 km Fuji | 7 | 962 C | Needell / Bell / Los | The Alpha Racing | NC |
| 3.4.1990 | 1000 km Fuji | 20 | 962 C GTi | Reuter / Sandro Sala | Alpha Cubic With RLR | NC |
| 3.4.1990 | 1000 km Fuji | 27 | 962 C | Nakaya / Weidler / Hane | From A Racing | NC |
| 3.4.1990 | 1000 km Fuji | 33 | 962 C | Herbert / Irvine / Rydell | Takefuji Racing Team | NC |
| 3.4.1990 | 1000 km Fuji | 55 | 962 C | Schuppan / Elgh / Mezera | Omron Racing Team | NC |
| 3.4.1990 | 1000 km Fuji | 100 | 962 C GTi | Fouché / Andskar / Kasuya | Trust Racing Team | NC |
| 8.4.1990 | 480 km Suzuka | 7 | 962 C | Wollek / Jelinski | Joest Porsche Racing | DNF |
| 8.4.1990 | 480 km Suzuka | 8 | 962 C | Palmer / Pescarolo | Joest Porsche Racing | 11th |
| 8.4.1990 | 480 km Suzuka | 9 | 962 C | Dickens / "Winter" | Joest Porsche Racing | 16th |
| 8.4.1990 | 480 km Suzuka | 10 | 962 CK6 | Schneider / Okada | Porsche Kremer Racing | 13th |
| 8.4.1990 | 480 km Suzuka | 11 | 962 C | Takahashi / Mogi | Porsche Kremer Racing (Advan Alpha Nova) | 5th |
| 8.4.1990 | 480 km Suzuka | 12 | 962 C | Hoy / Takahashi | Courage Competition (Alpha Racing) | 14th |
| 8.4.1990 | 480 km Suzuka | 14 | 962 C GTi | Reuter / Pérez-Sala | Richard Lloyd Racing | 15th |
| 8.4.1990 | 480 km Suzuka | 15 | 962 C | Larrauri / Huysman | Brun Motorsport | 6th |
| 8.4.1990 | 480 km Suzuka | 16 | 962 C | Pareja / Brun | Brun Motorsport | DNF |
| 8.4.1990 | 480 km Suzuka | 17 | 962 C GTi | Fouché / Andskar | Brun Motorsport (Trust Racing Team) | 7th |
| 8.4.1990 | 480 km Suzuka | 19 | 962 C | Elgh / Schuppan | Team Davey (Omron Racing Team) | 9th |
| 8.4.1990 | 480 km Suzuka | 20 | 962 C | Lee-Davey / Toledano | Team Davey | 17th |
| 8.4.1990 | 480 km Suzuka | 26 | 962 C | Oppermann / Grohs | Obermaier Primagaz Racing | DNF |
| 8.4.1990 | 480 km Suzuka | 27 | 962 C | Altenbach / Lässig | Obermaier Primagaz Racing | DQ |
| 8.4.1990 | 480 km Suzuka | 32 | 962 C | Konrad / Ricci | Konrad Motorsport | 19th |
| 8.4.1990 | 480 km Suzuka | 34 | 962 C | Needell / Bell | Equipe Almeras Fréres (The Alpha Racing) | 8th |
| 8.4.1990 | 480 km Suzuka | 39 | 962 C | Nakaya / Weidler | Swiss Team Salamin (Form A Racing) | 10th |
| 21.4.1990 | 1 h Long Beach [GT] | 92 | 930 | Dieter Oest | Oest Ent Racing | 32nd |
| 22.4.1990 | 3 h West Palm Beach | 16 | 962 C | Weaver / Haywood | Dyson Racing | 16th |
| 22.4.1990 | 3 h West Palm Beach | 17 | 962 C | Wollek / Acheson | Dauer Racing | 14th |
| 22.4.1990 | 3 h West Palm Beach | 30 | 962 C | Moretti | Gebhardt | 24th |
| 29.4.1990 | 480 km Monza | 6 | 962 C | Pescarolo / Ricci | Joest Racing | 14th |
| 29.4.1990 | 480 km Monza | 7 | 962 C | Wollek / Jelinski | Joest Porsche Racing | 5th |
| 29.4.1990 | 480 km Monza | 8 | 962 C | Palmer / Needell | Joest Porsche Racing | 8th |
| 29.4.1990 | 480 km Monza | 9 | 962 C | Dickens / "Winter" | Joest Porsche Racing | DNF |
| 29.4.1990 | 480 km Monza | 10 | 962 CK6 | van der Merwe / Schneider | Porsche Kremer Racing | 9th |
| 29.4.1990 | 480 km Monza | 11 | 962 CK6 | Olofsson / Reid | Porsche Kremer Racing (Convector) | 10th |
| 29.4.1990 | 480 km Monza | 14 | 962 C GTi | Reuter / Weaver | Richard Lloyd Racing | 17th |
| 29.4.1990 | 480 km Monza | 15 | 962 C | Larrauri / Huysman | Brun Motorsport | DNF |
| 29.4.1990 | 480 km Monza | 16 | 962 C | Pareja / Brun | Brun Motorsport | DNF |
| 29.4.1990 | 480 km Monza | 17 | 962 C | Sigala / Elgh | Brun Motorsport | 12th |
| 29.4.1990 | 480 km Monza | 19 | 962 C | Giacomelli / Ballabio | Team Davey | DNS |
| 29.4.1990 | 480 km Monza | 20 | 962 C | Giacomelli / Toledano / Ballabio | Team Davey | DQ |
| 29.4.1990 | 480 km Monza | 26 | 962 C | Oppermann / Grohs | Obermaier Racing | 15th |
| 29.4.1990 | 480 km Monza | 27 | 962 C | Altenbach / Lässig | Obermaier Racing | DNF |
| 29.4.1990 | 480 km Monza | 32 | 962 C | Konrad / Coppelli | Konrad Motorsport | DNF |
| 29.4.1990 | 480 km Monza | 33 | 962 C | Raul Boesel | Konrad Motorsport (Dauer Racing) | DNF |
| 29.4.1990 | 480 km Monza | 34 | 962 C | Alméras / Alméras | Equipe Alméras Frères | DNQ |
| 29.4.1990 | 480 km Monza | 39 | 962 C | Salamin / Taverna | Swiss Team Salamin | 16th |
| 4.5.1990 | Interserie Hungaroring | 1 | 962 C | Walter Lechner | Walter Lechner Racing School | 9th |
| 4.5.1990 | Interserie Hungaroring | 2 | 962 C | Franz Konrad | Franz Konrad Motorsport | 10th |
| 4.5.1990 | Interserie Hungaroring | 4 | 962 C | Walter Brun | Brun Motorsport | 11th |
| 4.5.1990 | Interserie Hungaroring | 6 | 962 CK6 | Giovanni Lavaggi | Porsche Kremer Racing | 2nd |
| 4.5.1990 | Interserie Hungaroring | 7 | 962 C | Henri Pescarolo | Jochen Daurer Racing | 6th |
| 4.5.1990 | Interserie Hungaroring | 10 | 962 CK6 | Bernd Schneider | Porsche Kremer Racing | 1st |
| 4.5.1990 | Interserie Hungaroring | 14 | 962 C | Willy König | Konig Specials Tuning | DNF |
| 4.5.1990 | Interserie Hungaroring | 26 | 962 C | Jürgen Oppermann | Obermaier Primagaz | DNF |
| 4.5.1990 | Interserie Hungaroring | 27 | 962 C | Otto Altenbach | Obermaier Primagaz | 5th |
| 4.5.1990 | Interserie Hungaroring | 28 | 962 C | Harald Grohs | Obermaier Primagaz | 4th |
| 4.5.1990 | Interserie Hungaroring | 30 | 962 C | Günther Gebhardt | Gebhardt Racing | DNF |
| 6.5.1990 | 300 km Topeka | 2 | 962 | Herzog / Haywood | Alucraft | 9th |
| 6.5.1990 | 300 km Topeka | 16 | 962 C | Dyson / Weaver / Haywood | Dyson Racing | DNA |
| 6.5.1990 | 300 km Topeka | 17 | 962 | Bob Wollek | BFGoodrich | DNA |
| 6.5.1990 | 300 km Topeka | 30 | 962 C | Moretti / Bell | Momo-Gebhardt Racing | DNA |
| 19.5.1990 | Zeltweg National | 2 | 935 DP | Willy Rabl | | raced |
| 20.5.1990 | 480 km Silverstone | 9 | 962 C | Dickens / "Winter" | Joest Porsche Racing | DNF |
| 20.5.1990 | 480 km Silverstone | 11 | 962 CK6 | Elgh / Reid | Porsche Kremer Racing (Convector) | 9th |
| 20.5.1990 | 480 km Silverstone | 14 | 962 C GTi | Weaver / Reuter | Richard Lloyd Racing | 11th |
| 20.5.1990 | 480 km Silverstone | 15 | 962 C | Larrauri / Huysman | Brun Motorsport | 6th |
| 20.5.1990 | 480 km Silverstone | 27 | 962 C | Altenbach / Lässig | Obermaier Racing | T-car |
| 20.5.1990 | 480 km Silverstone | 32 | 962 C | Konrad / Toivonen | Konrad Motorsport | 14th |
| 20.5.1990 | 480 km Silverstone | 33 | 962 C | Bell / Pescarolo | Konrad Motorsport (Dauer Racing) | DNS |
| 20.5.1990 | 480 km Silverstone | 39 | 962 C | Taverna / Salamin | Swiss Team Salamin | DNS |