| 30.8.1958 | Preliminary Santa Barbara [Ladies] | | Plus 4 | Ruth Doushkess | | ?th |
| 31.8.1958 | Santa Barbara [EP] | 13 | Plus 4 | Alvin Gebhard | | 3rd |
| 31.8.1958 | Santa Barbara [EP] | 95 | | Bill Hinshaw | | 5th |
| 31.8.1958 | Santa Barbara [EP] | 141 | Plus 4 | Roger Slowi | | 7th |
| 31.8.1958 | Santa Barbara [EP] | 199 | | Bill Chapman | | 10th |
| 31.8.1958 | Santa Barbara [EP] | | | Bill Dredge | | DNS |
| 6.9.1958 | SCCA National Road America [BP+CP+DP+EP] | 41 | | Victor Schuppe | | 14th |
| 6.9.1958 | SCCA National Road America [BP+CP+DP+EP] | 45 | | Curt Gifford | | DNF |
| 6.9.1958 | Sunbac Silverstone [Production] | | Plus 4 | Adrian Belcher | | 3rd |
| 6.9.1958 | Sunbac Silverstone [Hadicap 3] | | Plus 4 | Adrian Belcher | | 2nd |
| 14.9.1958 | SCCA Regional Meadowdale [CP+DP+EP] | 87 | Plus 4 | W. T. Bosworth | | DNA |
| 14.9.1958 | Preliminary Bridgehampton [BP+CP+DP+EP+FP+HP] | 411 | Plus 4 | James Forno | | 18th |
| 14.9.1958 | SCCA Regional Bridgehampton [BP+CP+DP+EP+FP+GP] | 411 | Plus 4 | James Forno | | 15th |
| 20.9.1958 | Oulton Park International [S+1.1] | 55 | Plus 4 | Adrian Belcher | A. G. W. Belcher | ?th |
| 20.9.1958 | Oulton Park International [S+1.1] | 62 | Plus 4 | Chris Lawrence | Chris Lawrence | DNA |
| 20.9.1958 | SCCA National Watkins Glen [DP+EP+HP+IM] | 111 | Plus 4 | H. B. Williamson | H. B. Williamson | 17th |
| 20.9.1958 | SCCA National Watkins Glen [DP+EP+HP+IM] | 168 | Plus 4 | James Forno | | 13th |
| 20.9.1958 | SCCA National Watkins Glen [DP+EP+HP+IM] | 191 | Plus 4 | E. H. Clapham | E. H. Clapham | 19th |
| 28.9.1958 | ICNSCC Ellensburg [AP+BP+CP+DP+EP] | 4 | Plus 4 | G. B. Sterne | | DNF |
| 28.9.1958 | Hourglass Field [Ladies+FIII] | | Plus 4 | Barbara Windhorst | | ?th |
| 4.10.1958 | Preliminary Virginia [Novice] | 39 | | David Williams | | 2nd |
| 5.10.1958 | SCCA Regional Thompson [DP+EP] | 4 | Plus 4 | Charles Kelsey | | 2nd |
| 5.10.1958 | SCCA National Virginia [BP+CP+DP+EP] | 39 | | David Williams | | DNF |
| 5.10.1958 | BRSCC Brands Hatch [Production] | 87 | Plus 4 | Chris Lawrence | Chris Lawrence | DNA |
| 5.10.1958 | SCCA Regional Thompson [DP+EP] | 107 | | Harold Baumann | Dr. Harold Baumann | 12th |
| 5.10.1958 | SCCA National Vaca Valley [EP+FP] | 144 | Plus 4 | Jack West | | DNF |
| 5.10.1958 | SCCA National Vaca Valley [EP+FP] | 183 | Plus 4 | Bob Kimball | | 11th |
| 11.10.1958 | LCCC Oulton Park [S2.0 EX] | 17 | Plus 4 | Roger Dobson | C. A. Pashley | DNA |
| 11.10.1958 | LCCC Oulton Park [S2.0 EX] | 70 | Plus 4 | Adrian Belcher | Bill Belcher | DNA |
| 12.10.1958 | SCCA Regional Wilmot [EP] | 1 | | Marvin Mann | | 5th |
| 12.10.1958 | Consolation Wilmot [EP+FP+HM] | 1 | | Marvin Mann | | 4th |
| 12.10.1958 | SCCA Regional Wilmot [EP] | 41 | | Curt Gifford | | 3rd |
| 12.10.1958 | SCCA Regional Wilmot [EP] | 87 | Plus 4 | W. T. Bosworth | | 2nd |
| 12.10.1958 | Riverside [BP+CP+DP+EP+FP] | 145 | Plus 4 | Lew Spencer | Rene Pallandini | 15th |
| 19.10.1958 | SCCA Regional Lime Rock [EP] | 27 | Plus 4 | Charles Kelsey | | 12th |
| 25.10.1958 | Preliminary Minden [Ladies] | | | Grace Tara | | 3rd |
| 25.10.1958 | Preliminary Minden [DP+EP] | | | Bill Hinshaw | | ?th |
| 26.10.1958 | Minden [Ladies] | | | Grace Tara | | 2nd |
| 9.11.1958 | SCCA Regional Laguna Seca [EP] | 0 | Plus 4 | Rick Hilgers | | raced |
| 9.11.1958 | SCCA Regional Laguna Seca [EP] | 13 | Plus 4 | Alvin Gebhard | Alvin Gebhard | raced |
| 9.11.1958 | SCCA Regional Laguna Seca [EP] | 98 | Plus 4 | Ed Leslie | Ed Leslie | raced |
| 9.11.1958 | SCCA Regional Laguna Seca [Ladies] | 108 | Plus 4 | Barbara Windhorst | Rene Pellandini | DNA |
| 9.11.1958 | SCCA Regional Laguna Seca [EP] | 145 | Plus 4 | Lew Spencer | Rene Pellandini | 2nd |
| 9.11.1958 | SCCA Regional Laguna Seca [EP] | 295 | | Bill Hinshaw | | 3rd |
| 9.11.1958 | SCCA Regional Laguna Seca [EP] | | | Bill Chapman | | raced |
| 9.11.1958 | SCCA Regional Laguna Seca [EP] | | | Bob Tara | | raced |
| 9.11.1958 | SCCA Regional Laguna Seca [EP] | | Plus 4 | Chuck Lowry | Chuck Lowry | DNA |
| 16.11.1958 | Preliminary Marlboro [BP+CP+DP+EP] | 701 | | Harold Baumann | | 20th |
| 22.11.1958 | 6 h Pomona | | Plus 4 | Spencer / Windhorst | | DNF |
| 23.11.1958 | Pomona [Ladies+Sedan] | | Plus 4 | Barbara Windhorst | | 2nd |
| 23.11.1958 | Pomona [BP+CP+DP+EP] | | Plus 4 | Slowi | | 14th |
| 23.11.1958 | Pomona [BP+CP+DP+EP] | | Plus 4 | Spencer | | 8th |
| 30.11.1958 | Phoenix [Ladies] | | Plus 4 | Barbara Windhorst | | 5th |
| 30.11.1958 | Phoenix [Production] | | | L. Hickerson | | 18th |
| 30.11.1958 | Phoenix [Production] | | Plus 4 | Lew Spencer | | 6th |
| 30.11.1958 | Phoenix [Production] | | | Roger Seargeant | | 11th |