| 1.3.1958 | Preliminary Phoenix [Novice] | 39 | | Hap Sharp | | 8th |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 39 | | Hap Sharp | | 1st |
| 2.3.1958 | SCCA Regional Phoenix [Main] | 39 | | Hap Sharp | | DNF |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 39 | | Hap Sharp | | 1st |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 78 | | Bill McKechneay | | DNF |
| 2.3.1958 | SCCA Regional Phoenix [Main] | 78 | | Bill McKechneay | | 15th |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 78 | | Bill McKechneay | | 2nd |
| 2.3.1958 | Preliminary Phoenix [Ladies] | 170 | | Mary McGee | | 4th |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 200 | | Frank Cairns | | DNF |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 200 | | Frank Cairns | | DNF |
| 8.3.1958 | Novice Mansfield [S+1.6] | 37 | | Bill Horton | | 1st |
| 8.3.1958 | Preliminary Boca Raton [Novice] | | | Jerry Kepner | | raced |
| 9.3.1958 | Preliminary Boca Raton [BP+CP+DP+EP] | 24 | | Jim Addison | | raced |
| 9.3.1958 | SCCA Regional Boca Raton [CM+DM+EM+FM+GM+BP+CP+DP] | 24 | | Jim Addison | | raced |
| 9.3.1958 | SCCA Regional Boca Raton [CM+DM+EM+FM+GM+BP+CP+DP] | 30 | | Rees Makins | | raced |
| 9.3.1958 | Preliminary Boca Raton [BP+CP+DP+EP] | 30 | | Rees Makins | | raced |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 37 | | Bill Horton | | DNS |
| 9.3.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP] | 37 | | Bill Horton | | 10th |
| 9.3.1958 | SCCA Regional Boca Raton [CM+DM+EM+FM+GM+BP+CP+DP] | 63 | | James Stokes | | ?th |
| 9.3.1958 | Preliminary Boca Raton [BP+CP+DP+EP] | 63 | | James Stokes | | 3rd |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 88 | | Hap Sharp | | DNF |
| 9.3.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP] | 88 | | Hap Sharp | | 6th |
| 9.3.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP] | 89 | | Dave Morgan | | 7th |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 89 | | Dave Morgan | | DNF |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 113 | | Ernie Grimm | Tulsa | 8th |
| 9.3.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP] | 113 | | Ernie Grimm | Tulsa | 9th |
| 9.3.1958 | SCCA Regional Boca Raton [CM+DM+EM+FM+GM+BP+CP+DP] | 141 | | Jerry Kepner | | raced |
| 9.3.1958 | Preliminary Boca Raton [BP+CP+DP+EP] | 141 | | Jerry Kepner | | raced |
| 22.3.1958 | 12 h Sebring | 1 | | Rathmann / Doane | Richard Doane | 12th |
| 22.3.1958 | 12 h Sebring | 2 | #E57S1004759 | Kilborn / Windridge / Thompson | Richard Thompson | 33rd |
| 22.3.1958 | 12 h Sebring | 70 | | Makins / Butcher / Koehne | Rees T. Makins | DNS |
| 23.3.1958 | SCCA Regional Stockton [Production +1.6] | 34 | #E57S103806 | Cloyd Gray | | 3rd |
| 23.3.1958 | SCCA Regional Stockton [Production +1.6] | 76 | | Bob Bent | | 10th |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 95 | | Sandy Greenblat | | 26th |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 185 | | Hugh Rahn | | 2nd |
| 30.3.1958 | SCC-BC Abbotsford [Race 2] | 3 | | D. Jones | | 3rd |
| 30.3.1958 | Willow Springs [Main] | 12 | | Elgin Holmes | Bud Goodwin | DNA |
| 30.3.1958 | Willow Springs [Production +1.6] | 12 | | Elgin Holmes | Bud Goodwin | DNA |
| 30.3.1958 | Willow Springs [Main] | 15 | | Hoppe / Yarter | Doc Hoppe | DNA |
| 30.3.1958 | Willow Springs [Production +1.6] | 15 | | Ned Yarter | Doctor Hoppe | 3rd |
| 30.3.1958 | Willow Springs [Ladies] | 15 | | H. C. Hoppe | Doctor Hoppe | 3rd |
| 30.3.1958 | Willow Springs [Production +1.6] | 56 | | A. G. Edinger | Dr. A. G. Edinger | DNA |
| 30.3.1958 | Willow Springs [Novice] | 56 | | A. G. Edinger | Dr. A. G. Edinger | 2nd |
| 30.3.1958 | Willow Springs [Main] | 56 | | A. G. Edinger | Dr. A. G. Edinger | DNA |
| 30.3.1958 | Willow Springs [Production 1.6] | 144 | | Chuck Cornett | George Harm - Radio KARM | 2nd |
| 30.3.1958 | Willow Springs [Production +1.6] | 144 | | Chuck Cornett | George Harm - Radio KARM | 1st |
| 30.3.1958 | Willow Springs [Main] | 144 | | Chuck Cornett | George Harm - Radio KARM | DNA |
| 30.3.1958 | Willow Springs [Ladies] | 440 | | H. C. Hoppe | Richard McClure, M.D. | DNA |
| 30.3.1958 | Willow Springs [Main] | 440 | | McClure / Hoppe | Richard McClure, M.D. | DNA |
| 30.3.1958 | Willow Springs [Modified] | 440 | | H. C. Hoppe | Richard McClure, M.D. | DNA |
| 30.3.1958 | Willow Springs [Production +1.6] | 440 | | Richard McClure | Richard McClure, M.D. | DNA |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 1 | | Scott Briley | | DQ |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 5 | | Hugh Harn | Hugh Harn | DNF |
| 13.4.1958 | Preliminary Palm Springs [Ladies+FIII] | 8 | | Shelby Hunsinger | Shelby Hunsinger | 6th |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 8 | | Bert Ruttman | | DNF |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 25 | | John Burbridge | John Burbridge | 15th |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 37 | | Fred Grant | Frederick Grant | 5th |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 41 | | Scott Briley | Scott Briley | DNS |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 58 | | Hap Sharp | | DNF |
| 13.4.1958 | GP Avandaro | 102 | | Pedro Rodriguez | Pedro Rodriguez | 4th |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 231 | | Jack Cairns | Art Mugg | DNF |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 283 | | Andy Porterfield | Andy Porterfield | 2nd |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 777 | | Bill McKechneay | Bill McKechneary | DNF |
| 20.4.1958 | SCCA National Marlboro [BP+CP+DP] | 2 | | Fred Windridge | | 1st |
| 20.4.1958 | San Salvador | 23 | | Jorge Zamora | | raced |
| 20.4.1958 | SCCA Regional Galveston [BP+CP+DP+EP] | 37 | | Bill Horton | | 4th |
| 20.4.1958 | Preliminary Galveston [BP+CP+DP+EP] | 38 | | Hap Sharp | | 1st |
| 20.4.1958 | Preliminary Galveston [BP+CP+DP+EP] | 39 | | Dave Morgan | | 2nd |
| 20.4.1958 | SCCA Regional Galveston [BP+CP+DP+EP] | 39 | | Dave Morgan | | DNF |
| 20.4.1958 | Preliminary Galveston [BP+CP+DP+EP] | 73 | | Ernie Grimm | | 3rd |
| 20.4.1958 | SCCA Regional Galveston [BP+CP+DP+EP] | 73 | | Ernie Grimm | | 1st |
| 20.4.1958 | SCCA National Marlboro [BP+CP+DP] | 83 | | Tom Kerr | | 4th |
| 20.4.1958 | SCCA National Marlboro [BP+CP+DP] | 89 | | Louis Winkler | | DNF |
| 20.4.1958 | SCCA Regional Galveston [BP+CP+DP+EP] | 105 | | G. G. Harris | | 5th |
| 20.4.1958 | SCCA National Marlboro [BP+CP+DP] | 125 | | Roger Penske | | DNF |
| 20.4.1958 | SCCA Regional Galveston [BP+CP+DP+EP] | | | Bill Fuller | | DNA |
| 20.4.1958 | SCCA Regional Galveston [BP+CP+DP+EP] | | | Bill Fritts | | DNA |
| 26.4.1958 | Preliminary Louisville [Novice] | | | V. V. Cooke | | 1st |
| 27.4.1958 | Aguascalientes | 2 | | Pedro Rodriguez | Pedro Rodriguez | 2nd |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 15 | | Henry Dingley | | 6th |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 40 | | Tom Kerr | | 13th |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 148 | | William C. King | | 12th |
| 27.4.1958 | SCCA Regional Louisville [BP+CP+DP+EP+FP Porsche] | | | Knab | | 2nd |
| 27.4.1958 | Preliminary Louisville [BP+CP+DP] | | | | | 5th |
| 27.4.1958 | Preliminary Louisville [BP+CP+DP] | | | | | 6th |
| 27.4.1958 | SCCA Regional Louisville [BP+CP+DP+EP+FP Porsche] | | | Baxter | | 5th |
| 27.4.1958 | SCCA Regional Louisville [BP+CP+DP+EP+FP Porsche] | | | V. V. Cooke | | 4th |
| 27.4.1958 | SCCA Regional Louisville [BP+CP+DP+EP+FP Porsche] | | | Stokes | | 3rd |
| 27.4.1958 | Preliminary Louisville [BP+CP+DP] | | | V. V. Cooke | | 2nd |
| 27.4.1958 | SCCA Regional Louisville [BP+CP+DP+EP+FP Porsche] | | | Spooner | | 1st |
| 27.4.1958 | Preliminary Louisville [BP+CP+DP] | | | Bill Straney | | 3rd |
| 27.4.1958 | Preliminary Louisville [BP+CP+DP] | | | Spooner | | 1st |
| 27.4.1958 | Preliminary Louisville [BP+CP+DP] | | | | | 4th |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 87 | | Dean Rollins | | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 87 | | Dean Rollins | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | | | Fred Windridge | | 9th |
| 4.5.1958 | Sidar Airfield | | | Pedro Rodriguez | Pedro Rodriguez | 2nd |
| 10.5.1958 | Novice Tracy [Production +1.6] | 95 | | Sandy Greenblat | Sandy Greenblat | 5th |
| 10.5.1958 | Novice Tracy [Production +1.6] | 191 | | Bob Devlin | Bob Devlin | 3rd |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 283 | | Andy Porterfield | | 1st |