| 11.1.1958 | GP Ardmore | 44 | | Dave Edmiston | | DNA |
| 8.2.1958 | Preliminary Pomona [Production 2.7] | 113 | | Alvin Gebhard | Chuck Lowry | 8th |
| 8.2.1958 | Preliminary Pomona [Production 2.7] | 145 | | Lew Spencer | Rene Pellandrini | 4th |
| 9.2.1958 | Pomona [Production 2.0] | 113 | | Alvin Gebhard | Chuck Lowry | 11th |
| 9.2.1958 | Pomona [Production 2.0] | 145 | | Lew Spencer | Rene Pellandrini | 4th |
| 9.2.1958 | Pomona [Ladies] | 145 | | Barbara Windhorst | Robert Windhorst | 3rd |
| 1.3.1958 | Preliminary Phoenix [Novice] | 4 | | Roger Seargeant | | 10th |
| 1.3.1958 | Preliminary Phoenix [Novice] | 7 | | Jim Crispelle | | 14th |
| 1.3.1958 | Preliminary Phoenix [Novice] | 27 | | Ed Harrington | | 18th |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 4 | | Roger Seargeant | | 7th |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 4 | | Roger Seargeant | | 9th |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 7 | | Jim Crispelle | | 12th |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 7 | | Jim Crispelle | | DNF |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 27 | | Ed Harrington | | 11th |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 27 | | Ed Harrington | | 16th |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 84 | | Bill Doushkess | | 11th |
| 2.3.1958 | Preliminary Phoenix [Ladies] | 84 | | Ruth Doushkess | | 5th |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 84 | | Bill Doushkess | | 10th |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 145 | | Lew Spencer | | 3rd |
| 2.3.1958 | Preliminary Phoenix [Ladies] | 145 | | Barbara Windhorst | | 2nd |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 145 | | Lew Spencer | | 5th |
| 22.3.1958 | 12 h Sebring | 36 | | Kennedy / Payne / Sherman | Richard Kennedy | 40th |
| 22.3.1958 | Preliminary Stockton [Sedan+Ladies+MG+FIII] | 131 | | Barbara Windhorst | | - |
| 23.3.1958 | SCCA Regional Stockton [Production +1.6] | 47 | | Cliff Wright | | 13th |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 131 | | Alvin Gebhard | | 6th |
| 23.3.1958 | SCCA Regional Stockton [Production +1.6] | 131 | | Lew Spencer | | 5th |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 195 | | Bill Hinshaw | | 7th |
| 29.3.1958 | BARC Mallory Park [Unlimited B] | 66 | | Adrian Belcher | A. Belcher | 10th |
| 29.3.1958 | BARC Mallory Park [Marque] | 67 | | Donald Pacey | D. Pacey | 3rd |
| 29.3.1958 | BARC Mallory Park [Marque] | | | John Looker | J. Looker | raced |
| 12.4.1958 | Grand Central [Sports] | 10 | | L. F. Cherrie | | 7th |
| 13.4.1958 | Preliminary Palm Springs [Ladies+FIII] | 145 | | Barbara Windhorst | Rene Pellandini | DNS |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 145 | | Lew Spencer | Rene Pellandini | DNS |
| 27.4.1958 | SCCA Regional Lime Rock [DP+EP] | 37 | | Charles Kelsey | | 4th |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 47 | | Cliff Wright | Dr. Cliff Wright | DNA |
| 11.5.1958 | SCCA Regional Tracy [Production Group B] | 47 | | Cliff Wright | Dr. Cliff Wright | 13th |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | 41 | | Charles Kelsey | Charles C. Kelsey, Jr. | DNA |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | 111 | | H. B. Williamson | H. B. Williamson | DNA |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | 187 | | W. T. Bosworth | W. T. Bosworth, Jr. | DNA |
| 26.5.1958 | NSCC Mallory Park [S+1.5] | 61 | | Ray Meredith | R. E. Meredith | DNA |
| 31.5.1958 | Preliminary Santa Barbara [DP+EP] | 145 | | Lew Spencer | Rene Pellandini | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 145 | | Barbara Windhorst | Rene Pelladini | DNA |
| 31.5.1958 | Preliminary Santa Barbara [DP+EP] | 146 | | Roger Slowi | Roger Slowi | DNA |
| 31.5.1958 | Preliminary Santa Barbara [DP+EP] | 245 | | Alvin Gebhard | Rene Pellandini | DNA |
| 1.6.1958 | Santa Barbara [Ladies] | 84 | | Ruth Doushkess | Bill Doushkess | DNA |
| 1.6.1958 | Santa Barbara [EP+FP+JP] | 84 | | Bill Doushkess | Bill Doushkess | 16th |
| 1.6.1958 | Santa Barbara [Ladies] | 109 | | Jo Ann Stewart | Jo Ann Stewart | DNA |
| 1.6.1958 | Santa Barbara [EP+FP+JP] | 144 | | Bill Dredge | Bill Dredge | 27th |
| 1.6.1958 | Santa Barbara [Ladies] | 145 | | Barbara Windhorst | Rene Pelladini | DNA |
| 1.6.1958 | Santa Barbara [EP+FP+JP] | 145 | | Lew Spencer | Rene Pellandini | DNF |
| 1.6.1958 | Santa Barbara [EP+FP+JP] | 146 | | Roger Slowi | Roger Slowi | DNF |
| 1.6.1958 | SCCA Regional Dunkirk [DP+EP] | 187 | | W. T. Bosworth | | DNF |
| 1.6.1958 | Santa Barbara [EP+FP+JP] | 245 | | Alvin Gebhard | Rene Pellandini | DNF |
| 7.6.1958 | LCCC Oulton Park [S2.0 EX] | 79 | | Mayman / Mayman | Kay Garages Ltd. | DNA |
| 7.6.1958 | LCCC Oulton Park [Handicap B] | 79 | | Mayman / Mayman | Kay Garages Ltd. | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 79 | | Mayman / Mayman | Kay Garages Ltd. | DNA |
| 8.6.1958 | SCCA Regional Thompson [EP+FP] | 37 | | Charles Kelsey | | DNA |
| 15.6.1958 | SCCA National Lime Rock [DP+EP] | 7 | | Charles Kelsey | | 5th |
| 15.6.1958 | SCCA Regional Laguna Seca [BP+CP+DP+EP] | 27 | | Roy Jackson-Moore | | 19th |
| 15.6.1958 | SCCA Regional Laguna Seca [BP+CP+DP+EP] | 145 | | Lew Spencer | | 14th |