| 1.5.1955 | SCCA National Bakersfield [S+1.5] | 26 | 750 Monza Scaglietti Spyder | Sterling Edwards | Sterling Edwards | 1st |
| 1.5.1955 | SCCA National Bakersfield [S+1.5] | 98 | 375 MM | Jack McAfee | Tony Parravano | 26th |
| 1.5.1955 | SCCA National Bakersfield [S+1.5] | 106 | 340 Mexico Special | George Sawyer | George Sawyer | DNA |
| 1.5.1955 | SCCA National Bakersfield [S+1.5] | 111 | 750 Monza Scaglietti Spyder | John von Neumann | John von Neumann | 2nd |
| 1.5.1955 | SCCA National Bakersfield [S+1.5] | 112 | 500 Mondial | Josie von Neumann | Josie von Neumann | 33rd |
| 1.5.1955 | Preliminary Bakersfield [Ladies+FIII] | 112 | 500 Mondial | Josie von Neumann | Josie von Neumann | ?th |
| 1.5.1955 | Mille Miglia | 623 | 500 Mondial Scaglietti Spyder Series II | Mario Della Favera | | DNF |
| 1.5.1955 | Mille Miglia | 628 | 500 Mondial | Luigi Taramazzo | | DNF |
| 1.5.1955 | Mille Miglia | 629 | 500 Mondial Scaglietti Spyder | Gilberto Cornacchia | | DNF |
| 1.5.1955 | Mille Miglia | 639 | 500 Mondial | Piazza / Piazza | | DNA |
| 1.5.1955 | Mille Miglia | 644 | 500 Mondial Scaglietti Spyder Series II | Carlo Leto di Priolo | | DNF |
| 1.5.1955 | Mille Miglia | 649 | 166 MM Touring Barchetta | Mantovani / Garbarini | | DNF |
| 1.5.1955 | Mille Miglia | 655 | 212 MM Vignale Berlinetta | Brinci / Malinconi | | DNF |
| 1.5.1955 | Mille Miglia | 656 | 225 S Touring Barchetta | Gianni Albarelli | | DNF |
| 1.5.1955 | Mille Miglia | 657 | 750 Monza | Ottavio Randaccio | | DNA |
| 1.5.1955 | Mille Miglia | 703 | | Vittorio Colocci | | DNA |
| 1.5.1955 | Mille Miglia | 705 | 118 LM Scaglietti Spyder | Maglioli / Monteferrario | Scuderia Ferrari | 3rd |
| 1.5.1955 | Mille Miglia | 706 | 750 Monza | Piotti / Zannini | | DNF |
| 1.5.1955 | Mille Miglia | 707 | 212 Export | Ilfo Minzoni | | DNA |
| 1.5.1955 | Mille Miglia | 713 | 212 Export | Aldo Simonetta | | DNF |
| 1.5.1955 | Mille Miglia | 714 | 750 Monza Scaglietti Spyder | Piero Carini | | DNF |
| 1.5.1955 | Mille Miglia | 715 | 750 Monza | Camillo Luglio | | DNF |
| 1.5.1955 | Mille Miglia | 717 | 250 Monza | "Kammamuri" | | 15th |
| 1.5.1955 | Mille Miglia | 718 | 375 MM Pinin Farina Spyder | Piero Scotti | | DNF |
| 1.5.1955 | Mille Miglia | 720 | 750 Monza | Enzo Pinzero | E. Pinzero | 27th |
| 1.5.1955 | Mille Miglia | 721 | | Mario Rossini | | DNA |
| 1.5.1955 | Mille Miglia | 723 | 121 LM Scaglietti Spyder | Eugenio Castellotti | priv. | DNF |
| 1.5.1955 | Mille Miglia | 724 | 750 Monza | Sergio Sighinolfi | Scuderia Ferrari | 6th |
| 1.5.1955 | Mille Miglia | 725 | 118 LM Scaglietti Spyder | Paolo Marzotto | Scuderia Ferrari | DNF |
| 1.5.1955 | Mille Miglia | 728 | 118 LM Scaglietti Spyder | Piero Taruffi | Scuderia Ferrari | DNF |
| 1.5.1955 | Mille Miglia | | 250 GT Europa | Couliboeuf / Behra | | DNA |
| 1.5.1955 | Mille Miglia | | 750 Monza | Luigi Bordonaro | | DNA |
| 1.5.1955 | Mille Miglia | | 166 MM Vignale | Primo Pezzoli | | DNA |
| 7.5.1955 | Silverstone International | 10 | | Harry Schell | Scuderia Ferrari | DNA |
| 7.5.1955 | Silverstone International | 18 | 750 Monza Scaglietti Spyder | "Mike Sparken" | "Mike Sparken" | 9th |
| 8.5.1955 | 4 h Forez | 1 | 750 Monza Scaglietti Spyder | François Picard | | 2nd |
| 8.5.1955 | 4 h Forez | 2 | 750 Monza Scaglietti Spyder | Louis Rosier | Louis Rosier | 1st |
| 8.5.1955 | Eläintarhanajo [Production] | 3 | 166 MM Touring Barchetta | Bengt Jonsson | | 11th |
| 8.5.1955 | Eläintarhanajo [Production] | 4 | 500 Mondial Pinin Farina Spyder | Valdemar Stener | | DNA |
| 8.5.1955 | Eläintarhanajo [Production] | 6 | 250 MM | Björn Martensson | | 2nd |
| 8.5.1955 | Eläintarhanajo [Production] | 7 | 250 MM Pini Farina Berlinetta | Carl Lohmander | | 9th |
| 8.5.1955 | Eläintarhanajo | 7 | 375 MM | Valdemar Stener | | DNF |
| 8.5.1955 | Eläintarhanajo | 9 | 750 Monza Scaglietti Spyder | Gunnar Carlsson | | DNF |
| 8.5.1955 | 4 h Forez | 11 | 166 MM/53 | Fernand Tavano | | DNF |
| 8.5.1955 | GP Spa | 19 | 166 MM/53 Spyder | Jacques Herzet | Ecurie Francorchamps | 9th |
| 8.5.1955 | GP Spa | 20 | 166 MM | Marcel Willemin | | ?th |
| 8.5.1955 | GP Spa | 31 | 750 Monza Scaglietti Spyder | Jean Lucas | Scuderia Los Amigos | DNF |
| 8.5.1955 | GP Spa | 32 | 750 Monza | Jean Estager | | raced |
| 8.5.1955 | GP Spa | 33 | 750 Monza Scaglietti Spyder | Jacques Swaters | Equipe Nationale Belge | 2nd |
| 8.5.1955 | GP Spa | 34 | 750 Monza Scaglietti Spyder | Roger Laurent | Equipe Nationale Belge | 3rd |
| 8.5.1955 | Coppa Lombardia | 330 | 750 Monza | | | raced |
| 8.5.1955 | Coppa Lombardia | 332 | 750 Monza | Luigi Piotti | Luigi Piotti | 2nd |
| 8.5.1955 | Coppa Lombardia | 334 | 225 Export Vignale Coupe | Bruno Moroni | | raced |
| 8.5.1955 | Coppa Lombardia | 338 | 750 Monza Scaglietti Spyder | Piero Carini | | 1st |
| 15.5.1955 | GP Bari [S+2.0] | 2 | | Mario Bornigia | | DNF |
| 15.5.1955 | SCCA National Cumberland [CM+DM+EM] | 3 | 750 Monza Scaglietti Spyder | Walt Hansgen | G. Tilp | DNF |
| 15.5.1955 | Bol d'Or | 4 | 500 Mondial Scaglietti Spyder Series II | Picard / Maret | | DNF |
| 15.5.1955 | GP Bari [S+2.0] | 4 | 750 Monza | Chico Landi | | 9th |
| 15.5.1955 | SCCA National Cumberland [CM+DM+EM] | 5 | 375 Plus | Jim Kimberly | J. H. Kimberly | raced |
| 15.5.1955 | GP Bari [S2.0] | 6 | 500 Mondial Scaglietti Spyder Series II | Mario Della Favera | Mario Della Favera | 2nd |
| 15.5.1955 | GP Bari [S+2.0] | 6 | 750 Monza Scaglietti Spyder | Jacques Swaters | Equipe Nationale Belge | 6th |
| 15.5.1955 | GP Bari [S+2.0] | 14 | 750 Monza Scaglietti Spyder | Emmanuel de Graffenried | | 4th |
| 15.5.1955 | GP Bari [S+2.0] | 16 | 750 Monza Scaglietti Spyder | Johnny Claes | Equipe Nationale Belge | DNF |
| 15.5.1955 | GP Bari [S+2.0] | 18 | 750 Monza Scaglietti Spyder | Piero Carini | | DNF |
| 15.5.1955 | Preliminary Cumberland [Novice 3.0] | 20 | | B. Kauser | R. B. Publicker | DNA |
| 15.5.1955 | GP Bari [S2.0] | 20 | 500 Mondial Scaglietti Spyder Series II | Carlo Leto di Priolo | | DNF |
| 15.5.1955 | SCCA National Cumberland [CM+DM+EM] | 20 | 250 MM | Robert Publicker | R. B. Publicker | DNA |
| 15.5.1955 | GP Bari [S+2.0] | 22 | 750 Monza | Luigi Piotti | | 7th |
| 15.5.1955 | GP Bari [S2.0] | 30 | 500 Mondial | Chico Landi | | 8th |
| 15.5.1955 | GP Bari [S+2.0] | 32 | 750 Monza | Masten Gregory | | 3rd |
| 15.5.1955 | GP Bari [S+2.0] | 36 | 750 Monza | Enzo Pinzero | | 10th |
| 15.5.1955 | GP Bari [S+2.0] | 38 | 118 LM Scaglietti Spyder | Piero Taruffi | | DNF |
| 15.5.1955 | Preliminary Cumberland [Novice 3.0] | 81 | 250 MM | Howard Hively | H. Hively | DNF |
| 15.5.1955 | SCCA National Cumberland [CM+DM+EM] | 197 | 375 MM | Sherwood Johnston | S. Johnston | 1st |
| 15.5.1955 | Preliminary Cumberland [Novice 3.0] | 220 | 250 MM | J. R. Schaeffer | J. M. R. Lyeth, Jr. | 1st |
| 15.5.1955 | SCCA National Cumberland [CM+DM+EM] | 220 | 250 MM | Richard Lyeth | J. M. R. Lyeth, Jr. | 5th |
| 15.5.1955 | SCCA National Cumberland [CM+DM+EM] | 225 | | Bob Said | B. Said, Jr. | DNA |
| 15.5.1955 | Preliminary Cumberland [Novice 3.0] | 281 | 212 Export | John Shakespeare | | 16th |
| 21.5.1955 | Trofeo Sardo | | | Mario Bornigia | | 2nd |
| 22.5.1955 | Circuit de Dieppe | | | "Lorica" | | 6th |
| 29.5.1955 | GP des Frontières | 2 | 750 Monza | Johnny Claes | Equipe Nationale Belge | DNF |
| 29.5.1955 | Eifelrennen Nürburgring | 5 | 750 Monza | Willie Daetwyler | Automobili Ferrari | 18th |
| 29.5.1955 | 500 mile Rafaela | 5 | 375 MM | Carlos Najurieta | | 3rd |
| 29.5.1955 | 12 h Hyères | 6 | 750 Monza | Canonica / Munaron | | 1st |
| 29.5.1955 | 500 mile Rafaela | 7 | 375 Plus Pinin Farina Spyder | Enrique Saenz Valiente | | DNF |
| 29.5.1955 | 12 h Hyères | 8 | 500 Mondial Scaglietti Spyder Series II | Dupont / Briac | | DNF |
| 29.5.1955 | Eifelrennen Nürburgring | 9 | 250 MM Pini Farina Berlinetta | Carl Lohmander | Tore Bjurström | 20th |
| 29.5.1955 | 12 h Hyères | 12 | 166 MM Touring Barchetta | Desmazes / Mantovani | | 8th |
| 29.5.1955 | GP des Frontières | 14 | 750 Monza | André Canonica | | DNA |
| 29.5.1955 | Supercortemaggiore | 16 | 750 Monza | Maglioli / Hawthorn | Scuderia Ferrari | 2nd |
| 29.5.1955 | 500 mile Rafaela | 18 | 212 Export Motto Spyder | Oscar Camaňo | | 5th |
| 29.5.1955 | 500 mile Rafaela | 20 | 250 MM Pinin Farina Berlinetta | Alberto Rodriguez-Larreta | Alberto Larreta | 1st |
| 29.5.1955 | GP des Frontières | 38 | | Bernard Bianchi | | DNA |
| 29.5.1955 | National Zandvoort | 44 | 500 Mondial Pinin Farina Spyder | Dries van der Lof | | raced |
| 29.5.1955 | National Zandvoort | 74 | 250 Monza Pinin Farina Spyder | Hans Tak | | 1st |
| 29.5.1955 | Santa Barbara [Ladies] | 75 | 500 Mondial | Josie von Neumann | | 2nd |
| 29.5.1955 | Santa Barbara [S+1.5] | 76 | 750 Monza Scaglietti Spyder | Ernie McAfee | Bill Doheny | 1st |
| 29.5.1955 | GP Tangier [2.0/+2.0] | | 750 Monza | Joaquim Felipe Nogueira | | 2nd |
| 29.5.1955 | GP Tangier [2.0/+2.0] | | 750 Monza | José A. Nogueira Pinto | | 1st |
| 29.5.1955 | GP Tangier [2.0/+2.0] | | 500 Mondial | Dustaritz | | 7th |