| 12.6.1955 | 24 h Le Mans | 37 | #0046 | Polensky / von Frankenberg | Porsche KG | 4th |
| 12.6.1955 | 24 h Le Mans | 38 | #0031 | Ringgenberg / Gilomen | Walter Ringgenberg | DNF |
| 12.6.1955 | 24 h Le Mans | 49 | #0048 | Veuillet / Arkus Duntov | Porsche KG | 13th |
| 12.6.1955 | 24 h Le Mans | 62 | #0047 | Glöckler / Juhan | Porsche KG | 6th |
| 12.6.1955 | 24 h Le Mans | 66 | #15 | Gendebien / Seidel | Ecurie Belge/Gonzague Olivier | 5th |
| 12.6.1955 | Opatija [S+1.3] | 140 | #0040 | Ernst Vogel | | 1st |
| 18.6.1955 | Preliminary Hansen Dam [Modified 1.5] | 56 | #0029 | Troy McHenry | Dr. Troy McHenry | DNA |
| 19.6.1955 | Hansen Dam [S1.5] | 56 | #0029 | Troy McHenry | Dr. Troy McHenry | DNA |
| 19.6.1955 | Lawrenceville [BM+CM+DM+EM+FM+CP+DP+EP] | 69 | #0019 | Ed Crawford | Ed Crawford | ?th |
| 19.6.1955 | Preliminary Lawrenceville [BM+CM+DM+EM+FM+CP+DP+EP] | 69 | #0019 | Ed Crawford | Ed Crawford | ?th |
| 19.6.1955 | Preliminary Lawrenceville [BM+CM+DM+EM+FM+CP+DP+EP] | 161 | #0020 | Art Bunker | Art Bunker, Jr. | ?th |
| 19.6.1955 | Lawrenceville [BM+CM+DM+EM+FM+CP+DP+EP] | 161 | #0020 | Art Bunker | Art Bunker, Jr. | ?th |
| 19.6.1955 | GP Tunisia | | #08 | Claude Storez | | 3rd |
| 19.6.1955 | GP Tunisia | | | Auguste Veuillet | | 6th |
| 25.6.1955 | Circuito do Porto [S1.5] | 1 | #0039 | Joaquim Felipe Nogueira | | 1st |
| 25.6.1955 | Circuito do Porto [S1.5] | 2 | #0038 | Fernando de Mascarenhas | | 6th |
| 25.6.1955 | Circuito do Porto [S1.5] | 10 | #0033 | Ernst Lautenschlager | | 3rd |
| 25.6.1955 | Circuito do Porto [S1.5] | | #15 | Wolfgang Seidel | | 2nd |
| 3.7.1955 | Halle-Saale-Schleife [S1.5] | 21 | #0036 | Theo Helfrich | | DNA |
| 3.7.1955 | New Orleans [Handicap] | 24 | | Richter | | DNA |
| 3.7.1955 | New Orleans [BM+CM+DM+EM+FM+CP+DP+EP] | 24 | | Richter | | DNA |
| 3.7.1955 | New Orleans [Sports] | 24 | | Richter | | DNA |
| 3.7.1955 | Halle-Saale-Schleife [S1.5] | 42 | #0041 | Richard Trenkel | | 4th |
| 3.7.1955 | Halle-Saale-Schleife [S1.5] | 44 | #0037 | Friedrich Kretschmann | | 5th |
| 3.7.1955 | Milwaukee [FM+GM+HM+IM+FP+GP] | 65 | #04 | Bob Davis | | DNA |
| 3.7.1955 | Milwaukee [FM+GM+HM+IM+FP+GP] | 69 | #0019 | Ed Crawford | | DNA |
| 3.7.1955 | New Orleans [Sports] | | | Norman Scott | | 4th |
| 4.7.1955 | Preliminary Beverly [BM+CM+DM+EM] | 33 | #0024 | Fred Procter | | 10th |
| 4.7.1955 | SCCA National Beverly [FM+GM+HM+DP+EP] | 33 | #0024 | Fred Procter | | 2nd |
| 4.7.1955 | SCCA National Beverly [FM+GM+HM+DP+EP] | 149 | #03 | Evans Hunt | | 17th |
| 10.7.1955 | SCCA National Torrey Pines [S1.5] | 11 | #06 | John von Neumann | John Von Neumann | 2nd |
| 10.7.1955 | SCCA National Torrey Pines [S1.5] | 56 | #0029 | Troy McHenry | Dr. Troy McHenry | 7th |
| 10.7.1955 | SCCA National Torrey Pines [S1.5] | 61 | #0020 | Art Bunker | Arthur S. Bunker, Jr | 5th |
| 10.7.1955 | SCCA National Torrey Pines [S+1.5] | 61 | #0020 | Art Bunker | Arthur S. Bunker, Jr | 21st |
| 10.7.1955 | SCCA National Torrey Pines [S+1.5] | 69 | #0019 | Ed Crawford | E. W. Crawford | DNF |
| 10.7.1955 | SCCA National Torrey Pines [S1.5] | 69 | #0019 | Ed Crawford | E. W. Crawford | 3rd |
| 10.7.1955 | SCCA National Torrey Pines [S+1.5] | 169 | #0026 | John Porter | John A. Porter, Jr. | DNF |
| 10.7.1955 | SCCA National Torrey Pines [S1.5] | 169 | #0026 | John Porter | John A. Porter, Jr. | 4th |
| 23.7.1955 | Brynfan Tyddyn [EM+FM] | 72 | #03 | Evans Hunt | | DNF |
| 24.7.1955 | Monsanto [S1.5] | 1 | #0039 | Joaquim Felipe Nogueira | | 2nd |
| 24.7.1955 | Monsanto [S1.5] | 2 | #0038 | Fernando de Mascarenhas | | 3rd |
| 24.7.1955 | Monsanto [S1.5] | 3 | | Stirling Moss | | 1st |
| 24.7.1955 | Monsanto [S1.5] | 4 | #15 | Wolfgang Seidel | | 4th |
| 24.7.1955 | Monsanto [S1.5] | 7 | #0041 | Mathieu Hezemans | | 6th |
| 24.7.1955 | Monsanto [S1.5] | 10 | #0033 | Ernst Lautenschlager | | 8th |
| 31.7.1955 | SCCA National Seafair [BM+CM+DM+EM] | 111 | #06 | John von Neumann | | 4th |
| 31.7.1955 | SCCA National Seafair [FM+GM+HM+FIII] | 111 | #06 | John von Neumann | John Von Neumann | 2nd |
| 31.7.1955 | SCCA National Seafair [FM+GM+HM+FIII] | 169 | #0026 | John Porter | John H. Porter, Jr. | 3rd |
| 31.7.1955 | SCCA National Seafair [FM+GM+HM+FIII] | 211 | | Eric Buckler | John Von Neumann | 4th |
| 7.8.1955 | GP Sverige [Production/GT+2.0] | 25 | #0048 | Richard von Frankenberg | Richard von Frankenberg | 3rd |
| 7.8.1955 | GP Sverige [Production/GT+2.0] | 26 | #0045 | Gert Kaiser | Gert Kaiser | 7th |
| 7.8.1955 | Zandvoort International | 36 | | | | raced |
| 14.8.1955 | Kanonloppet [Production/GT+2.0] | 18 | #0045 | Gert Kaiser | | 1st |
| 14.8.1955 | Sachsenring [S1.5] | 21 | #0036 | Theo Helfrich | | DNA |
| 14.8.1955 | Sachsenring [S1.5] | 35 | #15 | Wolfgang Seidel | | 3rd |
| 14.8.1955 | Sachsenring [S1.5] | 45 | #0037 | Friedrich Kretschmann | | 4th |
| 20.8.1955 | 9 h Goodwood | 34 | | Moss / von Hanstein | A.F.N. Ltd. | DNF |
| 20.8.1955 | 9 h Goodwood | 35 | #15 | Seidel / Steed | W. Seidel | 10th |
| 20.8.1955 | National Zandvoort | 35 | #0041 | Mathieu Hezemans | | 1st |
| 21.8.1955 | Roskilde Ring [PS2.0] | 31 | #0045 | Gert Kaiser | | raced |
| 28.8.1955 | 500 km Nürburgring | 1 | #0046 | Herbert Linge | Porsche KG | 6th |
| 28.8.1955 | 500 km Nürburgring | 2 | #0047 | Richard von Frankenberg | Porsche KG | 2nd |
| 28.8.1955 | 500 km Nürburgring | 3 | #0039 | Joaquim Felipe Nogueira | Felipe Nogueira | 10th |
| 28.8.1955 | 500 km Nürburgring | 4 | #0038 | Fernando de Mascarenhas | Fernando Mascarenhas | DNF |
| 28.8.1955 | 500 km Nürburgring | 5 | #15 | Wolfgang Seidel | Wolfgang Seidel | 5th |
| 28.8.1955 | 500 km Nürburgring | 6 | #0034 | Gonzague Olivier | Gonzague Olivier | DNF |
| 28.8.1955 | 500 km Nürburgring | 7 | #0060 | Robert Dutoit | Robert Dutoit | 9th |
| 28.8.1955 | 500 km Nürburgring | 8 | #0041 | Mathieu Hezemans | Nederlandse Autorensport Vereinigung | 13th |
| 28.8.1955 | 500 km Nürburgring | 9 | #0031 | Walter Ringgenberg | Walter Ringgenberg | DNF |
| 28.8.1955 | 500 km Nürburgring | 10 | #0045 | Gert Kaiser | Gert Kaiser | 7th |
| 28.8.1955 | 500 km Nürburgring | 11 | #0036 | Theo Helfrich | Theo Helfrich | DNF |
| 28.8.1955 | 500 km Nürburgring | 12 | #0016 | Josef Jeser | Joseph Jeser | 8th |
| 28.8.1955 | 500 km Nürburgring | 14 | #0037 | Friedrich Kretschmann | Friedrich Kretschmann | DNF |
| 28.8.1955 | 500 km Nürburgring | 15 | #0033 | Ernst Lautenschlager | Ernst Lautenschlager | 11th |
| 3.9.1955 | Premiliary Santa Barbara [Modified 1.5] | 11 | #06 | John von Neumann | Eleanor Von Neumann | DNA |
| 3.9.1955 | Premiliary Santa Barbara [Modified 1.5] | 56 | #0029 | Troy McHenry | Dr. Troy L. McHenry | DNA |
| 3.9.1955 | Premiliary Santa Barbara [Modified 1.5] | 98 | | Jack McAfee | Jack McAfee | DNA |
| 3.9.1955 | Premiliary Santa Barbara [Modified 1.5] | 169 | #0026 | John Porter | Aardvark Menagerie | DNA |
| 3.9.1955 | Preliminary Santa Barbara [Modified +1.5] | 211 | | John von Neumann | Eleanor Von Neumann | DNA |
| 3.9.1955 | Premiliary Santa Barbara [Modified 1.5] | 226 | #0021 | Mantz / Hosking | Lucille Hosking | DNA |
| 4.9.1955 | Finale Thompson [All Classes] | 5 | #0022 | Walt Hansgen | Don McKnought | 9th |
| 4.9.1955 | SCCA National Thompson [FM] | 5 | #0022 | Walt Hansgen | Don McKnought | 1st |
| 4.9.1955 | Skarpnäcksloppet [S2.0] | 10 | #0033 | Ernst Lautenschlager | | ?th |
| 4.9.1955 | Santa Barbara [Modified 1.5] | 11 | #06 | John von Neumann | Eleanor Von Neumann | 2nd |
| 4.9.1955 | Skarpnäcksloppet [S2.0] | 13 | #15 | Wolfgang Seidel | | 3rd |
| 4.9.1955 | Skarpnäcksloppet [S2.0] | 19 | #0045 | Max Nathan | | 2nd |
| 4.9.1955 | Skarpnäcksloppet [PS2.0/PS+2.0] | 32 | #0033 | Ernst Lautenschlager | | DNA |
| 4.9.1955 | SCCA National Thompson [FM] | 33 | #0024 | Fred Procter | | 5th |
| 4.9.1955 | Skarpnäcksloppet [PS2.0/PS+2.0] | 33 | | Wolfgang Seidel | | raced |
| 4.9.1955 | Skarpnäcksloppet [PS2.0/PS+2.0] | 35 | #15 | Max Nathan | | 2nd |
| 4.9.1955 | Skarpnäcksloppet [PS2.0/PS+2.0] | 37 | #0045 | Gert Kaiser | | 5th |
| 4.9.1955 | Skarpnäcksloppet [S2.0] | 40 | | Friedrich Kretschmann | | 5th |
| 4.9.1955 | Santa Barbara [Modified 1.5] | 56 | #0029 | Troy McHenry | Dr. Troy L. McHenry | DNA |
| 4.9.1955 | SCCA National Thompson [FM] | 64 | | Evans Hunt | | DNA |
| 4.9.1955 | Santa Barbara [Modified 1.5] | 98 | | Jack McAfee | Jack McAfee | 4th |
| 4.9.1955 | Santa Barbara [Modified 1.5] | 169 | #0026 | John Porter | Aardvark Menagerie | DNA |
| 4.9.1955 | Santa Barbara [Modified +1.5] | 211 | | John von Neumann | Eleanor Von Neumann | DNA |
| 4.9.1955 | Santa Barbara [Modified 1.5] | 226 | #0021 | Johnny Mantz | Lucille Hosking | raced |
| 4.9.1955 | Santa Barbara [Modified 1.5] | | | | | 3rd |
| 5.9.1955 | Preliminary Kansas City [BM+CM+DM+EM+FM] | 61 | #0020 | Art Bunker | | 20th |