| 13.3.1955 | 12 h Sebring | 83 | | Irish / Haskell | Isabelle Haskell | DNF |
| 13.3.1955 | 12 h Sebring | 89 | Kiekhaeffer | MacArthur / Gougelman | Sandy MacArthur | DNF |
| 13.3.1955 | 12 h Sebring | | | Vihl / Parrington / Michaels | Bernhard Vihl | DNA |
| 13.3.1955 | 12 h Sebring | | | Deshon / Quackenbush | Ralph Deshon | DNQ |
| 24.4.1955 | SCCA Regional Thompson [CP+FM] | 69 | | Roger Merrill | | 7th |
| 1.5.1955 | Mille Miglia | 016 | | Ilario Bandini | | DNA |
| 1.5.1955 | Mille Miglia | 030 | | Massimo Bondi | | DNA |
| 1.5.1955 | Mille Miglia | 038 | | Rusconi / Sintoni | | DNF |
| 8.5.1955 | Circuito di Gorizia [S750] | | | Massimo Bondi | | raced |
| 8.5.1955 | Circuito di Gorizia [S750] | | | Supremo Montanari | | raced |
| 8.5.1955 | Circuito di Gorizia [S750] | | | Saverio Rusconi | | raced |
| 15.5.1955 | SCCA National Cumberland [FM+GM+HM] | 89 | 'D' Targa Florio | Sandy MacArthur | S. MacArthur | 19th |
| 15.5.1955 | SCCA National Cumberland [CM+DM+EM] | 231 | | David Michaels | J. R. Matthews | DNA |
| 15.5.1955 | SCCA National Cumberland [FM+GM+HM] | 277 | | Louis Pessolano | L. C. Pessolano | DNA |
| 29.5.1955 | SCCA Regional Thompson [EP+EM] | 50 | | David Michaels | | 1st |
| 29.5.1955 | SCCA Regional Thompson [GM+HM] | 101 | | Ralph Deshon | | 6th |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 13 | | John Brooks | John Brooks | DNA |
| 30.5.1955 | Iowa [GM+HM+FP+GP] | 89 | | Sandy MacArthur | Sandy MacArthur | 8th |
| 30.5.1955 | Iowa [FM+GM+FM+FP+GP] | 89 | | Sandy MacArthur | Sandy MacArthur | DNA |
| 5.6.1955 | GP Mugello | | | Bandini | | DNF |
| 5.6.1955 | GP Mugello | | | Bruno Garavini | | 16th |
| 19.6.1955 | Preliminary Lawrenceville [FM+GM+HM+IM+FP+HP] | 89 | | Sandy MacArthur | Sandy MacArthur | ?th |
| 19.6.1955 | Lawrenceville [FM+GM+HM+IM+FP+HP] | 89 | | Sandy MacArthur | Sandy MacArthur | ?th |
| 3.7.1955 | Milwaukee [FM+GM+HM+IM+FP+GP] | 13 | Sports | John Brooks | | DNA |
| 3.7.1955 | Milwaukee [FM+GM+HM+IM+FP+GP] | 89 | 'D' Targa Florio | Sandy MacArthur | | 8th |
| 3.7.1955 | New Orleans [GM+HM+FP+GP] | 99 | | R. R. Simpson | | raced |
| 4.7.1955 | Preliminary Beverly [FP+GP+GM+HM] | 4 | | Dolph Vilardi | | 9th |
| 4.7.1955 | SCCA National Beverly [FM+GM+HM+DP+EP] | 4 | | Dolph Vilardi | | 13th |
| 4.7.1955 | Preliminary Beverly [BM+CM+DM+EM] | 61 | | Roger Merrill | | 19th |
| 4.7.1955 | Preliminary Beverly [FP+GP+GM+HM] | 126 | | Ralph Deshon | | 17th |
| 23.7.1955 | Brynfan Tyddyn [GM+HM] | 11 | | Dolph Vilardi | | 5th |
| 4.9.1955 | SCCA National Thompson [GM+HM] | 2 | | Henry Rudkin | | DNF |
| 4.9.1955 | SCCA National Thompson [GM+HM] | 44 | | Dolph Vilardi | | 4th |
| 4.9.1955 | SCCA National Thompson [EM+EP] | 113 | | David Michaels | | 2nd |
| 4.9.1955 | Finale Thompson [All Classes] | 113 | | David Michaels | | 6th |
| 11.9.1955 | SCCA National Road America [GM+HM] | 89 | | Sandy MacArthur | Sandy MacArthur | 11th |
| 11.9.1955 | SCCA National Road America [GM+HM] | 133 | | John Brooks | John P. Brooks | DNA |
| 17.9.1955 | SCCA National Watkins Glen [FM+GM+HM+FP] | 4 | | Dolph Vilardi | Dolph Vilardi | 19th |
| 17.9.1955 | SCCA National Watkins Glen [FM+GM+HM+FP] | 48 | Sp. | Antonio Pompeo | Tony Pompeo | 23rd |
| 17.9.1955 | SCCA National Watkins Glen [FM+GM+HM+FP] | 122 | | Henry Rudkin | H. A. Rudkin, Jr. | DNA |
| 17.9.1955 | SCCA National Watkins Glen [FM+GM+HM+FP] | 202 | | Henry Fanelli | Henry G. Fanelli | 15th |
| 9.10.1955 | SCCA Regional Thompson [FM+GM+HM] | 2 | | Henry Rudkin | | 10th |
| 9.10.1955 | SCCA Regional Thompson [EM+EP] | 3 | | David Michaels | | 1st |
| 9.10.1955 | SCCA Regional Thompson [FM+GM+HM] | 9 | | Roger Merrill | | 7th |
| 16.10.1955 | SCCA National Hagerstown [FM+GM+HM] | 44 | | Dolph Vilardi | Dolph Vilardi | 16th |
| 16.10.1955 | SCCA National Hagerstown [BM+CM+DM+EM] | 200 | | David Michaels | James R. Mathews | 10th |
| 24.11.1955 | Walterboro [GM+HM+FP+GP+HP] | 11 | | Waring | | 10th |
| 9.12.1955 | Governor's Trophy | 41 | 750 | Dolph Vilardi | | 43rd |
| 9.12.1955 | Governor's Trophy | 97 | 1500 | Rodger Dowd | | 54th |
| 11.12.1955 | Nassau Trophy | 41 | 750 | Dolph Vilardi | | 39th |
| 11.12.1955 | Nassau Trophy | 97 | 1500 | John Dowd | | 54th |