| 17.9.1955 | SCCA National Watkins Glen [Formula Libre] | 7 | V8RI | Phil Cade | Phillip J. Cade | DNF |
| 17.9.1955 | GP Watkins Glen | 10 | 300S | Bill Spear | W. C. Spear | 2nd |
| 17.9.1955 | SCCA National Watkins Glen [Formula Libre] | 11 | V8RI | George Weaver | George B. Weaver | DNF |
| 17.9.1955 | GP Watkins Glen | 16 | 300S | Bill Lloyd | William B. Lloyd | 3rd |
| 17.9.1955 | SCCA National Watkins Glen [Formula Libre] | 163 | | Howard Hanna | Howard Hanna | 20th |
| 17.9.1955 | SCCA National Watkins Glen [Formula Libre] | 229 | 8CTF | Gentry Smith | Gentry B. Smith | DNA |
| 18.9.1955 | Tourist Trophy | 14 | 300S | Behra / Musso | Officine Alfieri Maserati | DNF |
| 18.9.1955 | Tourist Trophy | 15 | 300S | Musso / Bordoni | Officine Alfieri Maserati | 5th |
| 18.9.1955 | Tourist Trophy | 24 | A6GCS | Bellucci / Vard | Officine Alfieri Maserati | DNF |
| 18.9.1955 | Tourist Trophy | 56 | A6GCS/53 | Loëns / Bonnier | André Loens | 18th |
| 1.10.1955 | Castle Combe International | 51 | A6GCS/53 | André Loëns | Andre Leons | 5th |
| 1.10.1955 | Castle Combe International [S2.0] | 51 | A6GCS/53 | André Loëns | Andre Leons | raced |
| 1.10.1955 | Castle Combe International [Invitation S2.0] | 51 | A6GCS/53 | André Loëns | Andre Leons | DNA |
| 1.10.1955 | Castle Combe [Formula Libre] | | 250F | Roy Salvadori | | 4th |
| 9.10.1955 | SCCA Regional Thompson [CM+UR] | 7 | V8RI | Phil Cade | | 6th |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 7 | A6GCS | Ted Boynton | C. Ted Boynton | DNA |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 10 | 300S | Bill Spear | William C. Spear | 3rd |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 16 | 300S | Bill Lloyd | William B. Lloyd | 4th |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 58 | | Briggs Cunningham | Briggs S. Cunningham | 5th |
| 16.10.1955 | SCCA National Hagerstown [FM+GM+HM] | 58 | 150S | Briggs Cunningham | Briggs S. Cunningham | DNA |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 59 | 300S | Cunningham / Bennett | Briggs S. Cunningham | DNA |
| 16.10.1955 | Targa Florio | 70 | A6GCS | Cavazzoni / Crepaldi | | 19th |
| 16.10.1955 | Targa Florio | 72 | A6GCS/53 | Cacciari / Sorrentino / Manzini | | 12th |
| 16.10.1955 | Targa Florio | 76 | A6GCS/53 | Manzini / Giardini | Officine Alfieri Maserati | 5th |
| 16.10.1955 | Targa Florio | 78 | A6GCS | Scarlatti / Lippi | Officine Alfieri Maserati | 8th |
| 16.10.1955 | Targa Florio | 82 | A6GCS | Musso / Rossi | Officine Alfieri Maserati | 6th |
| 16.10.1955 | Targa Florio | 84 | A6GCS/53 | Starrabba / La Pira | | 10th |
| 16.10.1955 | Targa Florio | 86 | A6GCS/53 | Lopez / Lopez | | 17th |
| 16.10.1955 | Targa Florio | 90 | 200S | Bracco / Bordoni | Officine Alfieri Maserati | DNF |
| 16.10.1955 | Targa Florio | 92 | A6GCS/53 Fantuzzi | Bellucci / de Filippis | Officine Alfieri Maserati | 9th |
| 16.10.1955 | Targa Florio | 94 | 150S | Mancini / Musy | Tony Parravano | DNF |
| 16.10.1955 | Targa Florio | 96 | A6GCS | Azzurro Manzini | | DNS |
| 16.10.1955 | Targa Florio | 118 | 300S | Musso / Villoresi | Officine Alfieri Maserati | DNF |
| 30.10.1955 | SCCA National Sacramento [BM+CM+DM+EM] | | A6GCS | Bob Gillespie | | DNF |
| 6.11.1955 | GP Venezuela | 18 | 300S | Juan Manuel Fangio | Equipo Maserati | 1st |
| 6.11.1955 | GP Venezuela | 20 | 300S | Luigi Musso | Equipo Maserati | DNF |
| 6.11.1955 | GP Venezuela | 22 | 300S | Roberto Mières | Equipo Maserati | DNF |
| 6.11.1955 | GP Venezuela | 24 | A6GCS/53 | Villoresi / Mières | Equipo Maserati | 6th |
| 6.11.1955 | GP Venezuela | 26 | A6GCS | João Rozende Dos Santos | Equipo Maserati | DNF |
| 6.11.1955 | GP Venezuela | 28 | A6GCS/53 | Maria Teresa de Filippis | Equipo Maserati | DNF |
| 6.11.1955 | GP Venezuela | 30 | A6GCS | Oscar Cabalén | Equipo Maserati | DNF |
| 6.11.1955 | GP Venezuela | 40 | A6GCS | Pancho Croquer | Equipo Madunina | DNF |
| 3.12.1955 | Preliminary Palm Springs [FM+GM+HM] | 205 | 150S | Ken Miles | Scuderia Parravano | 1st |
| 3.12.1955 | Preliminary Palm Springs [DM+EM+FL] | 207 | 300S | Masten Gregory | Scuderia Parravano | 2nd |
| 4.12.1955 | Main Palm Springs [S+1.5] | 205 | 150S | Ken Miles | Scuderia Parravano | 7th |
| 4.12.1955 | Main Palm Springs [S1.5] | 205 | 150S | Ken Miles | Scuderia Parravano | 1st |
| 4.12.1955 | Main Palm Springs [S+1.5] | 207 | 300S | Masten Gregory | Scuderia Parravano | 1st |
| 9.12.1955 | Governor's Trophy | 30 | 300S | Bill Lloyd | | 6th |
| 9.12.1955 | Governor's Trophy | 79 | 150S | Isabelle Haskell | | 16th |
| 11.12.1955 | Nassau Trophy | 1 | 300S | Masten Gregory | Tony Parravano | 3rd |
| 11.12.1955 | Nassau Trophy | 65 | A6GCS | Ted Boynton | | DNA |
| 11.12.1955 | Nassau Trophy | 66 | 300S | Phil Stewart | | DNA |
| 11.12.1955 | Nassau Trophy | 79 | 150S | Isabelle Haskell | | 21st |