| 19.6.1955 | GP Shell Imola | 4 | #2062 | Carlo Tomasi | | DNF |
| 19.6.1955 | GP Shell Imola | 10 | #2066 | Alberico Cacciari | | 9th |
| 19.6.1955 | GP Shell Imola | 48 | | Giuseppe Musso | | DNF |
| 26.6.1955 | GP Portugal | 8 | #2082 | Luigi Musso | | DNF |
| 26.6.1955 | GP Caserta [S2.0] | 12 | #2085 | Gaetano Starrabba | | 7th |
| 26.6.1955 | GP Caserta [S2.0] | | | Luigi Bellucci | | 1st |
| 26.6.1955 | GP Caserta [S2.0] | | | Giuseppe Musso | | 2nd |
| 26.6.1955 | GP Caserta [S2.0] | | | Maria Teresa de Filippis | | 6th |
| 26.6.1955 | GP Caserta [S2.0] | | | Giorgio Scarlatti | | 3rd |
| 26.6.1955 | GP Caserta [S2.0] | | | Cesare Perdisa | | DNF |
| 26.6.1955 | GP Caserta [S2.0] | | | Enzo Lopez | | 8th |
| 3.7.1955 | Milwaukee [BM+CM+DM+EM+CP+DP+EP] | 32 | #2083 | Tom Friedmann | | ?th |
| 10.7.1955 | Coppa d'Oro delle Dolomiti | 129 | #2068 | Fedele Lampertico | | DNF |
| 10.7.1955 | Coppa d'Oro delle Dolomiti | 136 | #2088 | Piero Valenzano | | DNF |
| 10.7.1955 | Coppa d'Oro delle Dolomiti | 137 | | Giuseppe Musso | | DNF |
| 10.7.1955 | Coppa d'Oro delle Dolomiti | 139 | #2089 | Francesco Giardini | | DNF |
| 10.7.1955 | Coppa d'Oro delle Dolomiti | 142 | #2082 | Gino Valenzano | | DNF |
| 10.7.1955 | Coppa d'Oro delle Dolomiti | 143 | | Silvio Cesarin | | 24th |
| 10.7.1955 | GP Independenzia | | #2078 | Ricardo Grandio | | 5th |
| 17.7.1955 | Circuito di Reggio Calabria [S2.0] | | | Luigi Bellucci | | 1st |
| 17.7.1955 | Circuito di Reggio Calabria [Handicap] | | | Luigi Bellucci | | 2nd |
| 17.7.1955 | Circuito di Reggio Calabria [S2.0] | | #2089 | Francesco Giardini | | 2nd |
| 24.7.1955 | 10 h Messina | | #2084 | de Filippis / Musitelli | | 3rd |
| 31.7.1955 | SCCA National Seafair [BM+CM+DM+EM] | 113 | | Bob Gillespie | R. G. Gillespie | 12th |
| 1.8.1955 | Brands Hatch International [S+1.9] | 50 | | Georges Houel | G. Houel | DNA |
| 7.8.1955 | GP Sverige [Production/GT+2.0] | 24 | | André Loëns | André Loëns | 5th |
| 14.8.1955 | Kanonloppet [Production/GT+2.0] | 14 | | André Loëns | | 3rd |
| 21.8.1955 | Roskilde Ring [PS2.0] | 27 | | André Loëns | | DNA |
| 21.8.1955 | Giro delle Calabria | 852 | | Luigi Bellucci | Maserati | 1st |
| 21.8.1955 | Giro delle Calabria | | | Francesco Giardini | Maserati | DNF |
| 21.8.1955 | Giro delle Calabria | | #2090 | Enzo Lopez | | 11th |
| 21.8.1955 | Giro delle Calabria | | #2084 | Maria Teresa de Filippis | | 4th |
| 21.8.1955 | Giro delle Calabria | | #2085 | Gaetano Starrabba | | DNF |
| 27.8.1955 | Oulton Park International | 24 | | Azzurro Manzini | A. Manzini | DNF |
| 28.8.1955 | GP Pergusa | 46 | #2085 | Gaetano Starrabba | | raced |
| 28.8.1955 | GP Pergusa | | #2084 | Maria Teresa de Filippis | | 2nd |
| 28.8.1955 | National Buenos Aires | | #2078 | Ricardo Grandio | | 4th |
| 28.8.1955 | GP Pergusa | | | Franco Bordoni | | 1st |
| 4.9.1955 | Skarpnäcksloppet [PS2.0/PS+2.0] | 34 | #2065 | André Loëns | | 1st |
| 5.9.1955 | Preliminary Kansas City [BM+CM+DM+EM+FM] | 32 | | Tom Friedmann | | 6th |
| 5.9.1955 | SCCA National Kansas City [BM+CM+DM+EM+FM] | 32 | | Tom Friedmann | | 5th |
| 10.9.1955 | SCCA National Road America [EM+FM] | 7 | | Ted Boynton | Ted Boynton | 6th |
| 10.9.1955 | SCCA National Road America [EM+FM] | 132 | | Tom Friedmann | Thomas A. Friedman | DNA |
| 17.9.1955 | GP Watkins Glen | 14 | | Ted Boynton | Ted Boynton | DNA |
| 17.9.1955 | GP Watkins Glen | 182 | #2083 | Tom Friedmann | Thomas A. Friedmann | DNA |
| 18.9.1955 | Tourist Trophy | 24 | | Bellucci / Vard | Officine Alfieri Maserati | DNF |
| 18.9.1955 | Tourist Trophy | 56 | | Loëns / Bonnier | André Loens | 18th |
| 1.10.1955 | Castle Combe International | 51 | | André Loëns | Andre Leons | 5th |
| 1.10.1955 | Castle Combe International [S2.0] | 51 | | André Loëns | Andre Leons | raced |
| 1.10.1955 | Castle Combe International [Invitation S2.0] | 51 | | André Loëns | Andre Leons | DNA |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 7 | | Ted Boynton | C. Ted Boynton | DNA |
| 16.10.1955 | Targa Florio | 70 | | Cavazzoni / Crepaldi | | 19th |
| 16.10.1955 | Targa Florio | 72 | #2066 | Cacciari / Sorrentino / Manzini | | 12th |
| 16.10.1955 | Targa Florio | 76 | #2089 | Manzini / Giardini | Officine Alfieri Maserati | 5th |
| 16.10.1955 | Targa Florio | 78 | | Scarlatti / Lippi | Officine Alfieri Maserati | 8th |
| 16.10.1955 | Targa Florio | 82 | | Musso / Rossi | Officine Alfieri Maserati | 6th |
| 16.10.1955 | Targa Florio | 84 | #2085 | Starrabba / La Pira | | 10th |
| 16.10.1955 | Targa Florio | 86 | #2090 | Lopez / Lopez | | 17th |
| 16.10.1955 | Targa Florio | 92 | #2097 | Bellucci / de Filippis | Officine Alfieri Maserati | 9th |
| 16.10.1955 | Targa Florio | 96 | | Azzurro Manzini | | DNS |
| 30.10.1955 | SCCA National Sacramento [BM+CM+DM+EM] | | | Bob Gillespie | | DNF |
| 6.11.1955 | GP Venezuela | 24 | #2082 | Villoresi / Mières | Equipo Maserati | 6th |
| 6.11.1955 | GP Venezuela | 26 | | João Rozende Dos Santos | Equipo Maserati | DNF |
| 6.11.1955 | GP Venezuela | 28 | | Maria Teresa de Filippis | Equipo Maserati | DNF |
| 6.11.1955 | GP Venezuela | 30 | | Oscar Cabalén | Equipo Maserati | DNF |
| 6.11.1955 | GP Venezuela | 40 | | Pancho Croquer | Equipo Madunina | DNF |
| 11.12.1955 | Nassau Trophy | 65 | | Ted Boynton | | DNA |