| 28.9.1958 | USAC Watkins Glen | 71 | | Vic Meinhardt | | 4th |
| 28.9.1958 | Hourglass Field [BM+CM+DM+EM] | | #0047 | Stan Sugarman | | 4th |
| 28.9.1958 | Hourglass Field [BM+CM+DM+EM] | | | Joe Playan | | 2nd |
| 28.9.1958 | Hourglass Field [BM+CM+DM+EM] | | | Jack McAfee | | 5th |
| 28.9.1958 | Hourglass Field [FM+GM+HM] | | | Jack McAfee | | 1st |
| 28.9.1958 | Hourglass Field [BM+CM+DM+EM] | | | John Davis | | 10th |
| 5.10.1958 | SCCA National Vaca Valley [BM+CM+DM+EM+FM] | 12 | | Eldon Beagle | | 8th |
| 5.10.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+GM] | 33 | | Newton Davis | | 9th |
| 5.10.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+GM] | 74 | | Don Sesslar | | 2nd |
| 5.10.1958 | Innsbruck [S+1.1] | 80 | #0040 | Ernst Vogel | OeASC | 2nd |
| 5.10.1958 | Innsbruck [S+1.1] | 81 | #0016 | Heini Walter | Heinrich Walter | 4th |
| 5.10.1958 | Innsbruck [S+1.1] | 82 | | Carel Godin de Beaufort | Godin Graf Beaufort | 3rd |
| 5.10.1958 | Innsbruck [S+1.1] | 85 | #0036 | Ludwig Fischer | Ludwig Fischer | raced |
| 5.10.1958 | Innsbruck [S+1.1] | 87 | | | Porsche Konstr. KG | raced |
| 5.10.1958 | SCCA National Vaca Valley [BM+CM+DM+EM+FM] | 88 | | Jack McAfee | | 2nd |
| 5.10.1958 | Innsbruck [S+1.1] | 88 | #0137 | Milivoj Bozic | Auto-Moto-Savez Jugoslaviya | 5th |
| 5.10.1958 | Innsbruck [S+1.1] | 93 | | von Döry | Ing. Dr. h. c. Porsche KG | 6th |
| 5.10.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+GM] | 140 | | Bob Holbert | | 11th |
| 5.10.1958 | SCCA National Vaca Valley [BM+CM+DM+EM+FM] | 188 | #0047 | Stan Sugarman | | 11th |
| 5.10.1958 | SCCA National Vaca Valley [BM+CM+DM+EM+FM] | 215 | | John Stevenson | | DNF |
| 11.10.1958 | Preliminary Venice [CM+DM+EM+FM+BP+CP+DP] | 27 | | Roy Schecter | | 3rd |
| 12.10.1958 | SCCA Regional Wilmot [BM+CM+DM+EM+FM+GM] | 26 | #04 | George van de Sande | | 5th |
| 12.10.1958 | 6 h Venice | 27 | | Roy Schecter | | 2nd |
| 12.10.1958 | USAC Riverside | 50 | | Ken Miles | Precision Motor Cars | 9th |
| 12.10.1958 | USAC Riverside | 124 | #0104 | George Keck | Team Empire | 19th |
| 12.10.1958 | 6 h Venice | | | Joe Sheppard | | 1st |
| 18.10.1958 | SCCA Regional Lime Rock [FM+GM] | 33 | | Newton Davis | | 2nd |
| 19.10.1958 | SCCA Regional Lime Rock [Main] | 33 | | Newton Davis | | DNF |
| 19.10.1958 | SCCA Regional Shelton | 124 | #0104 | George Keck | | 1st |
| 25.10.1958 | Preliminary Dothan [Modified+AP+BP+CP+DP+EP] | 22 | | Joe Sheppard | Joe Shepherd | raced |
| 25.10.1958 | Preliminary Dothan [Modified+AP+BP+CP+DP+EP] | 27 | | Roy Schecter | Roy Schechter | 3rd |
| 25.10.1958 | Preliminary Minden [FM+GM+HM] | | | Erv Lehr | | 1st |
| 25.10.1958 | Preliminary Minden [FM+GM+HM] | | #0089 | Jack West | | 2nd |
| 26.10.1958 | Minden [S1.5] | 2 | | Erv Lehr | | 1st |
| 26.10.1958 | SCCA Regional Dothan [Main] | 4 | #0059 | Jim Harbour | Jim Harbour | DNA |
| 26.10.1958 | SCCA Regional Dothan [Main] | 22 | | Joe Sheppard | Joe Shepherd | 2nd |
| 26.10.1958 | SCCA Regional Dothan [Main] | 27 | | Roy Schecter | Roy Schechter | 3rd |
| 26.10.1958 | Vineland [Main] | 140 | | Bob Holbert | | DNA |
| 26.10.1958 | Minden [S1.5] | 141 | #0089 | Don West | | 4th |
| 26.10.1958 | Minden [BM+CM+DM+EM] | 141 | #0089 | Jack West | | 10th |
| 1.11.1958 | Preliminary Palm Springs [CM+DM+EM+FM+GM+HM] | 29 | | Joe Playan | Joe Playan | DNA |
| 1.11.1958 | Preliminary Palm Springs [CM+DM+EM+FM+GM+HM] | 88 | | Jack McAfee | S. Sugarmann | 1st |
| 1.11.1958 | Preliminary Palm Springs [CM+DM+EM+FM+GM+HM] | 102 | | Beaumont / Tomerlin | Charles Beaumont | DNA |
| 1.11.1958 | Preliminary Palm Springs [CM+DM+EM+FM+GM+HM] | 188 | | Richard Bellows | S. Sugarmann | DNA |
| 1.11.1958 | Preliminary Palm Springs [CM+DM+EM+FM+GM+HM] | 193 | #06 | Betty Shutes | Betty J. Shutes | DNA |
| 1.11.1958 | Preliminary Palm Springs [Ladies+FIII] | 193 | #06 | Betty Shutes | Betty J. Shutes | DNA |
| 2.11.1958 | SCCA National Palm Springs [CM+DM+EM+FM+GM+HM] | 29 | | Joe Playan | Joe Playan | 4th |
| 2.11.1958 | SCCA National Palm Springs [CM+DM+EM+FM+GM+HM] | 88 | | Jack McAfee | S. Sugarmann | 1st |
| 2.11.1958 | SCCA National Palm Springs [CM+DM+EM+FM+GM+HM] | 102 | | Beaumont / Tomerlin | Charles Beaumont | DNA |
| 2.11.1958 | SCCA National Palm Springs [CM+DM+EM+FM+GM+HM] | 188 | | Richard Bellows | S. Sugarmann | DNA |
| 2.11.1958 | Palm Springs [Ladies+Sedan+FIII] | 193 | #06 | Betty Shutes | Betty J. Shutes | 1st |
| 2.11.1958 | SCCA National Palm Springs [CM+DM+EM+FM+GM+HM] | 193 | #06 | Betty Shutes | Betty J. Shutes | DNS |
| 2.11.1958 | SCCA Regional Oklahoma [Modified 2.0] | | | Bobby Burns | | 2nd |
| 2.11.1958 | SCCA National Palm Springs [CM+DM+EM+FM+GM+HM] | | | Don McGee | S. Sugarmann | DNA |
| 2.11.1958 | Oklahoma Petite GP | | | Bobby Burns | | 3rd |
| 8.11.1958 | Preliminary Laguna Seca [FM+GM+HM] | 50 | | Ken Miles | | 2nd |
| 8.11.1958 | Preliminary Laguna Seca [FM+GM+HM] | 88 | | Jack McAfee | Stan Sugarmann | 1st |
| 9.11.1958 | SCCA Regional Laguna Seca [EM+FM] | 21 | #0088 | Erv Lehr | | 7th |
| 9.11.1958 | SCCA Regional Laguna Seca [EM+FM] | 40 | | John Davis | John Davis | 13th |
| 9.11.1958 | SCCA Regional Laguna Seca [EM+FM] | 50 | | Ken Miles | | 2nd |
| 9.11.1958 | SCCA Regional Laguna Seca [EM+FM] | 88 | | Jack McAfee | Stan Sugarmann | 1st |
| 9.11.1958 | SCCA Regional Laguna Seca [EM+FM] | 124 | #0104 | George Keck | George Keck | 6th |
| 9.11.1958 | SCCA Regional Laguna Seca [Ladies] | 193 | #06 | Betty Shutes | | raced |
| 16.11.1958 | Preliminary Marlboro [BM+CM+EM+FM+GM] | 16 | | Roger Penske | | 2nd |
| 16.11.1958 | SCCA Regional Marlboro [BM+EM+FM+GM+BP+CP+DP] | 16 | | Roger Penske | | 2nd |
| 16.11.1958 | Dunnellon | | #0068 | Duncan Forlong | | raced |
| 23.11.1958 | Pomona [EM+FM+GM+HM] | | | John Davis | | 2nd |
| 23.11.1958 | Pomona [BM+CM+DM+EM] | | | Ken Miles | | 1st |
| 23.11.1958 | Pomona [EM+FM+GM+HM] | | #0021 | Haworth | | 6th |
| 23.11.1958 | Pomona [Ladies+Sedan] | | #06 | Betty Shutes | | 1st |
| 30.11.1958 | Phoenix [Ladies] | | #06 | Betty Shutes | | 2nd |
| 30.11.1958 | Phoenix [Ladies] | | | Mary McGee | | 4th |
| 30.11.1958 | Phoenix [BM+CM+DM+EM+FM+GM] | | #0047 | Stan Sugarman | | 5th |
| 30.11.1958 | Phoenix [Novice] | | | Don McGee | | ?th |
| 30.11.1958 | Phoenix [Main] | | #0047 | Stan Sugarman | | 7th |
| 30.11.1958 | Phoenix [BM+CM+DM+EM+FM+GM] | | | Jack McAfee | | 1st |
| 30.11.1958 | Phoenix [Ladies] | | #0089 | Sunnie Baker | | 1st |
| 30.11.1958 | Phoenix [Main] | | | Jack McAfee | Stan Sugarman | 1st |
| 5.12.1958 | Preliminary Governor's Trophy [S2.0] | 9 | #0117 | Ricardo Rodriguez | Ricardo Rodriguez | 1st |
| 5.12.1958 | Governor's Trophy | 9 | #0117 | Ricardo Rodriguez | Ricardo Rodriguez | 5th |
| 5.12.1958 | Preliminary Governor's Trophy [S2.0] | 66 | | Joe Sheppard | | raced |
| 5.12.1958 | Governor's Trophy | 74 | | Don Sesslar | Cyrus Fulton | 6th |
| 5.12.1958 | Preliminary Governor's Trophy [S2.0] | 74 | | Don Sesslar | Cyrus Fulton | DNF |
| 5.12.1958 | Preliminary Governor's Trophy [S2.0] | 86 | | Frank Campbell | | raced |
| 5.12.1958 | Governor's Trophy | 86 | | Frank Campbell | | 10th |
| 6.12.1958 | Nassau [Porsche] | 9 | #0117 | Ricardo Rodriguez | Ricardo Rodriguez | 1st |
| 6.12.1958 | Nassau [Porsche] | 30 | | Roy Schecter | | 4th |
| 6.12.1958 | Nassau [Porsche] | 66 | | Joe Sheppard | | 2nd |
| 6.12.1958 | Nassau [Porsche] | 74 | | Don Sesslar | Cyrus Fulton | 5th |
| 6.12.1958 | Nassau [Porsche] | 86 | | Frank Campbell | | 3rd |
| 7.12.1958 | Nassau Trophy | 9 | #0117 | Ricardo Rodriguez | Ricardo Rodriguez | DNF |
| 7.12.1958 | Nassau Trophy | 30 | | Roy Schecter | | 6th |
| 7.12.1958 | Nassau Memorial Trophy | 30 | | Roy Schecter | | 5th |
| 7.12.1958 | Nassau Trophy | 66 | | Joe Sheppard | | DQ |
| 7.12.1958 | Nassau Trophy | 74 | | Don Sesslar | Cyrus Fulton | 5th |
| 7.12.1958 | Nassau Memorial Trophy | 74 | | Don Sesslar | Cyrus Fulton | raced |