| 21.8.1955 | Buchanan Field [Modified +1.5] | 26 | 750 Monza Scaglietti Spyder | Sterling Edwards | Sterling Edwards | 1st |
| 21.8.1955 | Buchanan Field [Modified +1.5] | 106 | 340 Mexico Special | George Sawyer | Geo. Sawyer | DNA |
| 21.8.1955 | Giro delle Calabria | | 500 Mondial | Piero Taruffi | Scuderia Ferrari | DNF |
| 21.8.1955 | Giro delle Calabria | | | Piero Carini | Scuderia Ferrari | 2nd |
| 27.8.1955 | Oulton Park International | 26 | 500 Mondial Scaglietti Spyder | Franco Cortese | F. Cortese | DNF |
| 27.8.1955 | Oulton Park International | 28 | 750 Monza | Mike Hawthorn | Scuderia Ferrari | 2nd |
| 27.8.1955 | Oulton Park International | 30 | 750 Monza | Masten Gregory | M. Gregory | 4th |
| 27.8.1955 | Oulton Park International | 32 | 750 Monza Scaglietti Spyder | Jean Lucas | J. Lucas | DNF |
| 27.8.1955 | Oulton Park International | 36 | 750 Monza Scaglietti Spyder | Gunnar Carlsson | G. Carlsson | DNF |
| 27.8.1955 | Oulton Park International | 40 | 735 Monza Pinin Farina Spyder | Herbert Mackay-Fraser | H. McK Fraser | DNF |
| 27.8.1955 | Oulton Park International | 42 | 750 Monza | Nogueira Pinto | N. Pinto | DNA |
| 27.8.1955 | Oulton Park International | 44 | 750 Monza Scaglietti Spyder | Louis Rosier | Louis Rosier | DNF |
| 27.8.1955 | Oulton Park International | 50 | 121 LM Scaglietti Spyder | Carroll Shelby | Tony Parravano | DNF |
| 27.8.1955 | Oulton Park International | | 750 Monza | Johnny Claes | Ecurie Francorchamps | DNA |
| 27.8.1955 | Oulton Park International | | 750 Monza | Paul Frère | Ecurie Francorchamps | DNA |
| 28.8.1955 | National Buenos Aires | 4 | 212 Export Motto Spyder | Oscar Camaňo | | 7th |
| 28.8.1955 | National Buenos Aires | 6 | 625 TF Vignale Spyder | Luis Milán | | 3rd |
| 28.8.1955 | National Buenos Aires | | 375 MM | Carlos Najurieta | | 2nd |
| 28.8.1955 | National Buenos Aires | | 225 S | Angel Maiocchi | | 5th |
| 28.8.1955 | National Buenos Aires | | 375 Plus Pinin Farina Spyder | Enrique Saenz Valiente | | 1st |
| 3.9.1955 | Aintree International | 73 | 750 Monza Scaglietti Spyder | Harry Schell | Scuderia Los Amigos | 4th |
| 3.9.1955 | Aintree International | 74 | 750 Monza | Alfonso de Portago | Marquis de Portago | DNF |
| 3.9.1955 | Aintree International | 75 | 735 Monza Pinin Farina Spyder | Herbert Mackay-Fraser | H. McKay Frazer | DNF |
| 3.9.1955 | Preliminary Santa Barbara [Modified +1.5] | 76 | 750 Monza Scaglietti Spyder | Ernie McAfee | Wm. Doheny | 1st |
| 3.9.1955 | Preliminary Santa Barbara [Modified +1.5] | 194 | 375 Plus | Ken Miles | Tony Parravano | DNA |
| 4.9.1955 | Santa Barbara [Modified +1.5] | 2 | 750 Monza Scaglietti Spyder | Phil Hill | John von Neumann | 2nd |
| 4.9.1955 | SCCA National Thompson [CM+DM] | 4 | 375 MM | Duncan Black | | 2nd |
| 4.9.1955 | Finale Thompson [All Classes] | 4 | 375 MM | Duncan Black | | 3rd |
| 4.9.1955 | Stockholmsloppet [S+2.0] | 8 | 250 Monza Pinin Farina Spyder | Hans Tak | | 2nd |
| 4.9.1955 | Finale Thompson [All Classes] | 10 | 340 Mexico | Preston Gray | | 5th |
| 4.9.1955 | SCCA National Thompson [CM+DM] | 10 | 340 Mexico | Preston Gray | | 4th |
| 4.9.1955 | SCCA National Thompson [CM+DM] | 16 | 225 S | Briggs Cunningham, Jr. | | 12th |
| 4.9.1955 | Skarpnäcksloppet [PS2.0/PS+2.0] | 22 | 750 Monza | Hans Tak | | raced |
| 4.9.1955 | Skarpnäcksloppet [PS2.0/PS+2.0] | 27 | 250 MM | Jo Bonnier | | DNA |
| 4.9.1955 | Skarpnäcksloppet [PS2.0/PS+2.0] | 28 | 250 MM | Björn Martensson | | raced |
| 4.9.1955 | Stockholmsloppet [S+2.0] | 36 | 750 Monza Scaglietti Spyder | Gunnar Carlsson | | DNF |
| 4.9.1955 | SCCA National Thompson [EM+EP] | 53 | 500 Mondial | Jim Pauley | | 1st |
| 4.9.1955 | Santa Barbara [Modified +1.5] | 76 | 750 Monza Scaglietti Spyder | Ernie McAfee | Wm. Doheny | 1st |
| 4.9.1955 | Santa Barbara [Modified +1.5] | 194 | 375 Plus | Ken Miles | Tony Parravano | DNF |
| 5.9.1955 | Preliminary Kansas City [BM+CM+DM+EM+FM] | 5 | 121 LM Scaglietti Spyder | Jim Kimberly | | DNF |
| 5.9.1955 | SCCA National Kansas City [BM+CM+DM+EM+FM] | 6 | 340 MM Vignale Spyder | Ed Lunken | | 4th |
| 5.9.1955 | Preliminary Kansas City [BM+CM+DM+EM+FM] | 6 | 340 MM Vignale Spyder | Ed Lunken | | 5th |
| 5.9.1955 | Preliminary Kansas City [BM+CM+DM+EM+FM] | 55 | 375 MM | Dale Duncan | A. V. Dayton | 1st |
| 5.9.1955 | SCCA National Kansas City [BM+CM+DM+EM+FM] | 55 | 375 MM | Dale Duncan | A. V. Dayton | 1st |
| 5.9.1955 | Preliminary Kansas City [BM+CM+DM+EM+FM] | 71 | 375 Plus | Howard Hively | Howard Hively | 4th |
| 5.9.1955 | SCCA National Kansas City [BM+CM+DM+EM+FM] | 71 | 375 Plus | Howard Hively | Howard Hively | 3rd |
| 5.9.1955 | SCCA National Kansas City [BM+CM+DM+EM+FM] | 76 | 225 S | David Biggs | | 10th |
| 5.9.1955 | Preliminary Kansas City [BM+CM+DM+EM+FM] | 76 | 225 S | David Biggs | | 15th |
| 5.9.1955 | Preliminary Kansas City [BM+CM+DM+EM+FM] | 101 | 375 MM | Lloyd Barton | Sherwood Johnston | 2nd |
| 5.9.1955 | SCCA National Kansas City [BM+CM+DM+EM+FM] | 101 | 375 MM | Sherwood Johnston | Sherwood Johnston | 2nd |
| 10.9.1955 | SCCA National Road America [EM+FM] | 46 | | Robert E. Tappian | Ecurie Hoosier | DNA |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 3 | 750 Monza Scaglietti Spyder | Phil Hill | George E. Tilp | 1st |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 5 | 375 MM Pinin Farina Spyder | Jim Kimberly | James H. Kimberly | 7th |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 5T | 121 LM Scaglietti Spyder | Jim Kimberly | James H. Kimberly | DNS |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 6 | 340 MM Vignale Spyder | Ed Lunken | Edmund Lunken | 8th |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 71 | 375 Plus | Howard Hively | Howard Hively | 6th |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 118 | 212 Export | John Shakespeare | John W. Shakespeare | DNA |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 119 | 375 MM | Lloyd Barton | John W. Shakespeare | DNF |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 122 | 250 MM | Richard Lyeth | J. M. R. Lyeth, Jr. | 9th |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 188 | | Charles Hassan | C. R. Hessen | DNA |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 220 | | Allen Guiberson | Allen Guiberson | DNA |
| 11.9.1955 | SCCA National Road America [BM+CM+DM] | 711 | 250 MM | John Quackenbush | John V. Quackenbush | DNA |
| 11.9.1955 | Vila do Conde | | 250 MM | Borges Barreto | | DNS |
| 11.9.1955 | Vila do Conde | | 250 MM | Lionel Castelo Branco Castro | | 3rd |
| 11.9.1955 | Vila do Conde | | 500 Mondial Scaglietti Spyder Series II | Fernando de Mascarenhas | | 2nd |
| 11.9.1955 | Vila do Conde | | 750 Monza | José A. Nogueira Pinto | | 1st |
| 11.9.1955 | National Tres Arroyos | | 375 Plus Pinin Farina Spyder | Enrique Saenz Valiente | | 1st |
| 17.9.1955 | GP Watkins Glen | 3 | 750 Monza | Luigi Chinetti | Luigi Chinetti | DNA |
| 17.9.1955 | GP Watkins Glen | 5 | 121 LM Scaglietti Spyder | Jim Kimberly | James H. Kimberly | DNA |
| 17.9.1955 | GP Watkins Glen | 6 | 340 MM Vignale Spyder | Ed Lunken | Edmund P. Lunken | DNA |
| 17.9.1955 | GP Watkins Glen | 22 | 250 MM Vignale | Richard Lyeth | J. M. R. Lyeth, Jr. | 4th |
| 17.9.1955 | GP Watkins Glen | 44 | 375 MM | Duncan Black | Duncan Black | 5th |
| 17.9.1955 | SCCA National Watkins Glen [Formula Libre] | 131 | 500 Mondial | Robert Tappan | Ecurie Hoosier | DNA |
| 17.9.1955 | GP Watkins Glen | 171 | 375 Plus | Howard Hively | Howard Hively | DNA |
| 17.9.1955 | GP Watkins Glen | 210 | 340 Mexico Spyder | Preston Gray | Preston Gray | 6th |
| 17.9.1955 | GP Watkins Glen | 225 | 250 MM | Bernie Kousar | Bernard Kousar & Robert Publicker | DNS |
| 17.9.1955 | SCCA National Watkins Glen [Formula Libre] | 237 | | | Luigi Chinetti | DNA |
| 17.9.1955 | GP Watkins Glen | 244 | 750 Monza | | Allen Guiberson | DNA |
| 18.9.1955 | Tourist Trophy | 4 | 857 Sport | Castellotti / Taruffi | Scuderia Ferrari | 6th |
| 18.9.1955 | Tourist Trophy | 5 | 857 Sport | Maglioli / Trintignant | Scuderia Ferrari | 8th |
| 18.9.1955 | Tourist Trophy | 6 | 750 Monza | Gendebien / Gregory | Scuderia Ferrari | DNS |
| 18.9.1955 | Tourist Trophy | 7 | 750 Monza | Swaters / Claes | Equipe Nationale Belge | 13th |
| 18.9.1955 | Tourist Trophy | 8 | 750 Monza Scaglietti Spyder | Lucas / de Portago | Ecurie Bullfrog | DNS |
| 18.9.1955 | Tourist Trophy | | 750 Monza | Gérard Crombac | Gerard Crombac | DNA |
| 22.9.1955 | National Buenos Aires | 11 | 250 MM Pinin Farina Berlinetta | Ramon Opisco | | 8th |
| 1.10.1955 | SCCA Regional Salinas [Modified +1.5] | 2 | 750 Monza Scaglietti Spyder | Phil Hill | John von Neumann | DNS |
| 1.10.1955 | Castle Combe International | 2 | 750 Monza Scaglietti Spyder | Louis Rosier | Louis Rosier | 2nd |
| 1.10.1955 | SCCA Regional Salinas [Modified +1.5] | 11 | 750 Monza Scaglietti Spyder | John von Neumann | | raced |
| 1.10.1955 | Castle Combe International | 19 | 750 Monza | Herbert Mackay-Fraser | H. McKay Fraser | 4th |
| 1.10.1955 | SCCA Regional Salinas [Modified +1.5] | 26 | 750 Monza Scaglietti Spyder | Sterling Edwards | | 3rd |
| 9.10.1955 | SCCA Regional Thompson [CM+UR] | 10 | 340 Mexico | Preston Gray | | 2nd |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 3 | 750 Monza Scaglietti Spyder | Phil Hill | Phil Hill | 2nd |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 4 | 375 MM | Duncan Black | Duncan Black | DNF |
| 16.10.1955 | Targa Florio | 74 | 500 Mondial Scaglietti Spyder Series II | Cortese / Pucci | | DNF |
| 16.10.1955 | Targa Florio | 100 | 750 Monza | Piotti / Cornacchia | | DNF |
| 16.10.1955 | Targa Florio | 110 | 750 Monza | Shelby / Munaron | Scuderia Ferrari | DNF |
| 16.10.1955 | Targa Florio | 120 | 750 Monza | Maglioli / Sighinolfi | Scuderia Ferrari | DNF |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 711 | 250 MM | John Quackenbush | John V. Quackenbush | raced |
| 16.10.1955 | Smartt Field [S+1.5] | | | B. Barton | | 3rd |
| 16.10.1955 | Smartt Field [S+1.5] | | | David Biggs | | 2nd |