| 10.5.1958 | Novice Tracy [Production +1.6] | 7 | | Hugh Harn | Hugh Harn | DNA |
| 10.5.1958 | 4 h Relay Harewood Acres | 13B | | Ed Leavens | Allsorts | DNF |
| 10.5.1958 | 4 h Relay Harewood Acres | 19B | | Bob Clift | Ecurie Detroit | 25th |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 34 | #E57S103806 | Cloyd Gray | Cloyd Gray | 3rd |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 76 | | Bob Bent | Bob Bent | DNA |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 83 | | Robert Nix | Robert J. Nix | DNA |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 83 | | Robert Nix | | 4th |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 168 | | Ray Altman | Ray Altman | DNA |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 237 | | Fred Grant | | 5th |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 34 | #E57S103806 | Cloyd Gray | Cloyd Gray | 3rd |
| 11.5.1958 | Hawaii [Production +1.6] | 49 | | Pat Mathis | Patrick Mathis | DNA |
| 11.5.1958 | Hawaii [Locals] | 49 | | Pat Mathis | Patrick Mathis | 2nd |
| 11.5.1958 | Hawaii [Match] | 49 | | Pat Mathis | Patrick Mathis | DNA |
| 11.5.1958 | Hawaii [S+1.6] | 49 | | Pat Mathis | Patrick Mathis | DNF |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 76 | | Bob Bent | Bob Bent | 6th |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 83 | | Robert Nix | Robert J. Nix | 5th |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 142 | | Lawrence Hagin | | 15th |
| 11.5.1958 | Hawaii [S+1.6] | 166 | | Bob Dickson | Bob Dickson | 7th |
| 11.5.1958 | Hawaii [Production +1.6] | 166 | | Bob Dickson | Bob Dickson | 5th |
| 11.5.1958 | Hawaii [Match] | 166 | | Bob Dickson | Bob Dickson | DNA |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 168 | | Ray Altman | Ray Altman | DNA |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 237 | | Fred Grant | | 7th |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 283 | | Andy Porterfield | | 1st |
| 11.5.1958 | Hawaii [Production +1.6] | 417 | | Clark Reynolds | Clark Reynolds | DNA |
| 11.5.1958 | Hawaii [Match] | 417 | | Clark Reynolds | Clark Reynolds | DNA |
| 11.5.1958 | Hawaii [S+1.6] | 417 | | Clark Reynolds | Clark Reynolds | DNA |
| 15.5.1958 | Aspern [GT+1.6] | 34 | | Rudolf Grimas | Rudolf Grimas | raced |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 19 | | Roger Penske | Roger S. Penske | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 20 | | Kenneth Gee | Roger S. Penske | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 51 | #E57S104007 | Bill Howe | L. W. Howe | 3rd |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 103 | | W. P. Dalton | Wesley P. Dalton | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 120 | | Louis Winkler | Louis H. Winkler, Jr. | ?th |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 132 | | Ed Leavens | A. D. Gorrie and Company | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 157 | #E57S104387 | Bob Mouat | Robert Mouat, Jr. | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 179 | | Traver McKenna | T. H. McKenna, Jr. | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 188 | | Don Yenko | Don Yenko | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 190 | | Ed Myers | Edwin J. Myers | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | | | Fred Windridge | | 1st |
| 25.5.1958 | Hourglass Field [Main] | | | Lloyd Porter | | DNA |
| 25.5.1958 | Hourglass Field [Ladies] | | | Audrey Rush | | 1st |
| 25.5.1958 | Hourglass Field [Novice] | | | A. G. Edinger | | 2nd |
| 25.5.1958 | Hourglass Field [Ladies] | | | H. C. Hoppe | | DNA |
| 31.5.1958 | Novice Dunkirk [CM+EM+GM+HM+BP+CP+DP] | 12 | | Bob Johnson | | 4th |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 30 | | Bill Gaskins | Bill Gaskins | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 36 | | Tony Settember | Tony Settember | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 37 | | Andy Porterfield | Frederick Grant | DNA |
| 31.5.1958 | Preliminary La Junta [Production+HM] | 38 | | Hap Sharp | | 1st |
| 31.5.1958 | Novice Dunkirk [CM+EM+GM+HM+BP+CP+DP] | 46 | | Kenneth Herbst | | 12th |
| 31.5.1958 | SCCA National Bridgehampton [BP+CP+UR+FIII] | 69 | #E57S104250 | Frank Dominianni | | 10th |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 78 | | Hugh Harn | Hugh Harn | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 83 | | Dave Kyte | Dave Kyte | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 86 | #J58S102277 | Trenor Peter Stanley | Trenor Peter Stanley | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 90 | | Bert Ruttman | Bert Ruttman | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 90 | | Shelby Hunsinger | Bert Ruttman | DNA |
| 31.5.1958 | SCCA National Bridgehampton [BP+CP+UR+FIII] | 99 | | Fred Windridge | | DNF |
| 31.5.1958 | Preliminary Santa Barbara [Novice] | 120 | | Arthur Saylor | Arthur D. Saylor | 8th |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 120 | | Arthur Saylor | Arthur D. Saylor | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 125 | | John Burbridge | John Burbridge | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 132 | | Hoffman / Aarons | Bob Hoffman | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 141 | | Scott Briley | Scott Briley | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 166 | | Bob Dickson | Bob Dickson | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 169 | | Gene Morgan | Gene Morgan | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 191 | | Bob Devlin | Bob Devlin | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified +1.5] | 199 | | Robert Palmini | Robert Palmini | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 221 | | Steve Brent | Steve Brent | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 231 | | Ginny Sims | Lee Snodgrass | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 231 | | Art Mugg | Lee Snodgrass | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 283 | | Andy Porterfield | Andy Porterfield | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 290 | | Jerry McGee | Jerry McGee | DNA |
| 31.5.1958 | ICNSCC Deer Park [Modified] | | | Tom Luce | | 3rd |
| 31.5.1958 | LASC Green Acres [S/GT+2.6] | | | L. D. Morrisett | | 1st |
| 31.5.1958 | ICNSCC Deer Park [Formula Libre] | | | Tom Luce | | 3rd |
| 31.5.1958 | LASC Green Acres [Main] | | | L. D. Morrisett | | 1st |
| 31.5.1958 | Preliminary La Junta [Production+HM] | | | Ernie Grimm | | 3rd |
| 31.5.1958 | Preliminary La Junta [Production+HM] | | | John Kingham | | 2nd |
| 31.5.1958 | LASC Green Acres [S/GT+2.6] | | | Ed Leavens | | raced |
| 31.5.1958 | ICNSCC Deer Park [Production +1.5] | | | Tom Luce | | 1st |
| 1.6.1958 | GP Dunkirk | 12 | | Bob Johnson | | DNF |
| 1.6.1958 | SCCA Regional La Junta [BM+CM+DM+EM+BP+CP+DP] | 22 | | Bob Porter | | 8th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 30 | | Bill Gaskins | Bill Gaskins | 5th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 36 | | Tony Settember | Tony Settember | 4th |
| 1.6.1958 | SCCA Regional La Junta [BM+CM+DM+EM+BP+CP+DP] | 38 | | Hap Sharp | | 6th |
| 1.6.1958 | SCCA Regional Dunkirk [CM+DM+EM+CP] | 39 | | W. P. Dalton | | DNF |
| 1.6.1958 | SCCA Regional La Junta [BM+CM+DM+EM+BP+CP+DP] | 67 | | Seymour Laff | | 13th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 78 | | Hugh Harn | Hugh Harn | 14th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 83 | | Dave Kyte | Dave Kyte | DNF |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 86 | #J58S102277 | Trenor Peter Stanley | Trenor Peter Stanley | 9th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 90 | | Bert Ruttman | Bert Ruttman | 6th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 120 | | Arthur Saylor | Arthur D. Saylor | 16th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 125 | | John Burbridge | John Burbridge | 17th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 132 | | Bob Hoffman | Bob Hoffman | 15th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 141 | | Scott Briley | Scott Briley | DNF |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 166 | | Bob Dickson | Bob Dickson | 7th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 169 | | Gene Morgan | Gene Morgan | DNF |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 191 | | Bob Devlin | Bob Devlin | 10th |
| 1.6.1958 | Santa Barbara [BM+CM+DM+EM] | 199 | | Robert Palmini | Robert Palmini | 13th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 231 | | Jack Cairns | Lee Snodgrass | DNF |
| 1.6.1958 | SCCA Regional La Junta [BM+CM+DM+EM+BP+CP+DP] | | | John Kingham | | DNS |
| 1.6.1958 | La Junta [Ladies] | | | Dennie Del Bosco | | DNF |
| 1.6.1958 | La Junta [Ladies] | | | | | DNS |