| 13.2.1955 | Willow Springs [Production +1.5] | 43 | Doretti | James McEachen | Dr. Jim McLachen | DNA |
| 13.2.1955 | Willow Springs [Modified +1.5] | 89 | Doretti | Edward Boyd | Dr. Edward Boyd | DNA |
| 13.2.1955 | Willow Springs [Ladies+FIII] | 89 | Doretti | Pat Boyd | Dr. Edward Boyd | DNA |
| 13.3.1955 | 12 h Sebring | | Doretti | Carson / Hastings | Howard Hanna | DNQ |
| 26.3.1955 | SMRC Snetterton [S+1.5] | 19 | Doretti | H. Marston | J. Gunn | raced |
| 26.3.1955 | SMRC Snetterton [Formula Libre] | 19 | Doretti | H. Marston | J. Gunn | DNS |
| 26.3.1955 | Preliminary Palm Springs [Production +1.5] | 89 | Doretti | De Olivera / Boyd | Dr. Edward Boyd | raced |
| 27.3.1955 | Main Palm Springs [S+1.5] | 89 | Doretti | De Olivera / Boyd | Dr. Edward Boyd | raced |
| 1.5.1955 | Preliminary Bakersfield [FM+GM+EP+FP] | 89 | Doretti | Henry DeOlivera | Edward Boyd | 15th |
| 1.5.1955 | Preliminary Bakersfield [Production] | 89 | Doretti | Edward Boyd | Edward Boyd | 13th |
| 1.5.1955 | Preliminary Bakersfield [Ladies+FIII] | 89 | Doretti | Pat Boyd | Edward Boyd | DNA |
| 1.5.1955 | SCCA National Bakersfield [S+1.5] | 89 | Doretti | Edward Boyd | Edward Boyd | 24th |
| 15.5.1955 | Preliminary Cumberland [Novice 2.0] | 63 | Doretti | Jordan L. Bauscher | J. L. Baucher | ?th |
| 15.5.1955 | Preliminary Cumberland [Novice 2.0] | 122 | Doretti | Ralph Ziegler | R. W. Ziegler | 9th |
| 15.5.1955 | Preliminary Cumberland [Novice 2.0] | 184 | Doretti | James Carson | J. T. Carson | DNA |
| 22.5.1955 | Marlboro [S2.0] | | Doretti | | James Carson | raced |
| 29.5.1955 | Santa Barbara [S+1.5] | 13 | Doretti | Flynn | | raced |
| 29.5.1955 | SCCA Regional Thompson [EP+EM] | 146 | Doretti | McCarthy | | DNF |
| 30.5.1955 | Iowa [BM+CM+DM+EM+CP+DP+EP] | 52 | Doretti | Art Abrahams | Arthur Abrahams | DNA |
| 30.5.1955 | Iowa [Novice +1.5] | 52 | Doretti | Art Abrahams | Arthur Abrahams | DNA |
| 30.5.1955 | Iowa [EM+FM+CP+DP+EP] | 52 | Doretti | Art Abrahams | Arthur Abrahams | DNA |
| 30.5.1955 | Iowa [EM+FM+CP+DP+EP] | 83 | Doretti | Clyde Robbins | Clyde Robins | DNA |
| 30.5.1955 | Iowa [BM+CM+DM+EM+CP+DP+EP] | 83 | Doretti | Clyde Robbins | Clyde Robins | DNA |
| 30.5.1955 | Iowa [Novice +1.5] | 83 | Doretti | Clyde Robbins | Clyde Robins | DNA |
| 30.5.1955 | Iowa [Ladies] | 84 | Doretti | Margaret Kisner | Margaret Kisner | DNA |
| 5.6.1955 | Santa Rosa [Production 3.0] | 77 | Doretti | Dave Minniear | | 8th |
| 18.6.1955 | Preliminary Hansen Dam [Production +1.5] | 43 | Doretti | James McEachen | Dr. J. A. McEachen | DNA |
| 18.6.1955 | Preliminary Hansen Dam [Production +1.5] | | Doretti | Harvey Mayer | | 1st |
| 19.6.1955 | Hansen Dam [S+1.5] | 43 | Doretti | James McEachen | Dr. J. A. McEachen | DNA |
| 3.7.1955 | Milwaukee [CP+DP+EP] | 183 | Doretti | Clyde Robbins | | 12th |
| 3.7.1955 | Milwaukee [BM+CM+DM+EM+CP+DP+EP] | 183 | Doretti | Clyde Robbins | | DNA |
| 4.7.1955 | SCCA National Beverly [BM+CM+DM+EM+CP] | | Doretti | Dean McCarthy | | DNA |
| 10.7.1955 | Preliminary Torrey Pines [CP+DP+EP] | 13 | Doretti | Lee Flynn | Lee Flynn | 19th |
| 10.7.1955 | SCCA National Torrey Pines [S1.5] | 89 | Doretti | Edward Boyd | | DNS |
| 23.7.1955 | Brynfan Tyddyn [EP+FP] | 62 | Doretti | Jordan L. Bauscher | | DNS |
| 23.7.1955 | Brynfan Tyddyn [EP+FP] | 88 | Doretti | Dean McCarthy | | 10th |
| 13.8.1955 | Edenvale [S2.0] | 95 | Doretti | Dean McCarthy | | raced |
| 21.8.1955 | Buchanan Field [Production P356+TR2+AH] | 77 | Doretti | Dave Minniear | Dave Minniear | ?th |
| 3.9.1955 | Preliminary Santa Barbara [Modified +1.5] | 70 | Doretti | Balchowsky / Balchowsky | Max Balchowsky | DNA |
| 3.9.1955 | Santa Barbara [Ladies] | 70 | Doretti | Ina Balchowsky | Max Balchowsky | DNA |
| 3.9.1955 | Preliminary Santa Barbara [Production 2.0] | 113 | Doretti | Lee Flynn | Lee Flynn | DNA |
| 4.9.1955 | BRSCC Brands Hatch [S+1.9] | 49 | Doretti | D. F. Sidnell | | 6th |
| 4.9.1955 | Santa Barbara [Modified +1.5] | 70 | Doretti | Balchowsky / Balchowsky | Max Balchowsky | DNA |
| 4.9.1955 | Santa Barbara [Production +1.5] | 113 | Doretti | Lee Flynn | Lee Flynn | DNA |
| 10.9.1955 | SCCA National Road America [DP+EP] | 183 | Doretti | Clyde Robbins | Clyde Robins | 17th |
| 10.9.1955 | PMC Silverstone [Relay] | | Doretti | Dennis Barratt | | 2nd |
| 17.9.1955 | SCCA National Watkins Glen [Formula Libre] | 25 | Doretti | Ralph Ziegler | Ralph W. Ziegler | 28th |
| 17.9.1955 | SCCA National Watkins Glen [Formula Libre] | 221 | Doretti | Dean McCarthy | Dean C. McCarthy | 23rd |
| 18.9.1955 | Pferdsfeld [S/GT2.0] | 55 | Doretti | Haydon | | DNA |
| 16.10.1955 | SCCA National Hagerstown [CP+DP+EP+FP1] | 131 | Doretti | Dean McCarthy | Dean C. McCarthy | DNA |
| 16.10.1955 | SCCA National Hagerstown [DP2+EP] | 131 | Doretti | Dean McCarthy | Dean C. McCarthy | raced |
| 16.10.1955 | SCCA National Hagerstown [DP2+EP] | 135 | Doretti | Ralph Ziegler | Ralph W. Ziegler | raced |
| 22.10.1955 | 6 h Torrey Pines | 43 | Doretti | McEachen / Rosenthal | Dr. J. A. McEachen | 33rd |
| 23.10.1955 | Torrey Pines [Production +1.5] | 31 | Doretti | Lee Flynn | Lee F. Flynn | 15th |
| 23.10.1955 | Torrey Pines [Production +1.5] | 43 | Doretti | James McEachen | Dr. J. A. McEachen | DNS |
| 30.10.1955 | SCCA National Sacramento [CP+DP+EP] | 33 | Doretti | Gordon Wilson | | 8th |
| 13.11.1955 | SCCA National Glendale [CP+DP+EP] | 31 | Doretti | Lee Flynn | Lee Flynn | 21st |
| 13.11.1955 | SCCA National Glendale [BM+CM+DM+EM] | 40 | Doretti | Max Balchowsky | Max Balchowsky | T-car |
| 13.11.1955 | SCCA National Glendale [BM+CM+DM+EM] | 70 | Doretti | Max Balchowsky | Max Balchowsky | DNF |
| 13.11.1955 | SCCA National Glendale [UR+FIII] | 70 | Doretti | Max Balchowsky | Max Balchowsky | 3rd |
| 3.12.1955 | Preliminary Palm Springs [CP+DP+EP+FIII] | 31 | Doretti | Lee Flynn | | 35th |
| 3.12.1955 | Preliminary Palm Springs [CP+DP+EP+FIII] | 198 | Doretti | Irwin Belsky | | 33rd |
| 4.12.1955 | Consolation Palm Springs [S+1.5] | 31 | Doretti | Lee Flynn | | 24th |
| 4.12.1955 | Consolation Palm Springs [S+1.5] | 198 | Doretti | Irwin Belsky | | DNF |
| 1955 | Put-In-Bay [EM+FM+EP+FP] | 10 | Doretti | Ralph Ziegler | | raced |