| 5.7.1958 | National Open Crystal Palace | 51 | | L. Monteiro | L. Monteiro | DNA |
| 5.7.1958 | SCCA National Lime Rock [CM+DM+EM+FM] | 63 | | Phil Forno | Briggs Cunningham | 9th |
| 5.7.1958 | SCCA National Lime Rock [CM+DM+EM+FM] | 133 | | Newton Davis | | 6th |
| 6.7.1958 | SCCA Regional Vaca Valley [FM+GM+HM] | 12 | | Eldon Beagle | Eldon Beagle | 2nd |
| 6.7.1958 | SCCA Regional Vaca Valley [CM+DM+EM] | 88 | | Jack McAfee | Stan Sugarman | 2nd |
| 6.7.1958 | SCCA Regional Vaca Valley [FM+GM+HM] | 88 | | Jack McAfee | Stan Sugarman | 1st |
| 13.7.1958 | Vila Real | 34 | | Cypriano Flores | | 9th |
| 13.7.1958 | Pomona [S1.5] | | | McAfee | | 2nd |
| 13.7.1958 | LISCA Lime Rock [Modified] | | | Vic Meinhardt | | 1st |
| 20.7.1958 | 10 h Messina | 22 | #0143 | Heins / Strähle | | 1st |
| 20.7.1958 | SCCA Regional Thompson [Modified+UR] | 33 | | Newton Davis | | 1st |
| 24.7.1958 | Lourenço Marques | 29 | #0140 | Ian Fraser Jones | | 2nd |
| 26.7.1958 | Zandvoort | 59 | | Carel Godin de Beaufort | | ?th |
| 3.8.1958 | SCCA Regional Minden [FM+GM+HM] | 12 | | Eldon Beagle | Eldon Beagle | 1st |
| 3.8.1958 | Rheinland Nürburgring [S1.5] | 40 | | Carel Godin de Beaufort | | 5th |
| 3.8.1958 | Rheinland Nürburgring [S1.5] | 46 | | Heini Walter | | 7th |
| 3.8.1958 | Giro delle Calabria | | #0143 | Christian Heins | | 1st |
| 10.8.1958 | Kanonloppet [Sports] | 2 | | Carel Godin de Beaufort | | DNF |
| 16.8.1958 | SCCA National Milwaukee [BM+CM+DM+EM+FM+GM] | 27 | | Ernie Erickson | | 3rd |
| 16.8.1958 | SCCA National Milwaukee [BM+CM+DM+EM+FM+GM] | 44 | #0019 | Dean Causey | | 6th |
| 17.8.1958 | SCCA National Montgomery [FM+GM] | 62 | | Phil Forno | Briggs Cunningham | DNF |
| 17.8.1958 | SCCA National Montgomery [FM+GM] | 71 | | Vic Meinhardt | | 2nd |
| 17.8.1958 | SCCA National Montgomery [FM+GM] | 74 | | Don Sesslar | | 3rd |
| 17.8.1958 | Zeltweg [Sports] | 98 | | Huschke von Hanstein | | DNF |
| 17.8.1958 | Zeltweg [Sports] | 102 | | Carel Godin de Beaufort | C. Graf Beaufort | DNA |
| 17.8.1958 | Zeltweg [Sports] | 104 | #0016 | Heini Walter | Heinrich Walter | 5th |
| 17.8.1958 | Zeltweg [Sports] | 107 | | Anton von Döry | Antonio v. Döry | raced |
| 17.8.1958 | Zeltweg [Sports] | 108 | #0137 | Milivoj Bozic | Milivoj Bozic | 6th |
| 17.8.1958 | SCCA National Montgomery [FM+GM] | 133 | | Newton Davis | | 4th |
| 17.8.1958 | SCCA National Montgomery [FM+GM] | 140 | | Bob Holbert | | 1st |
| 30.8.1958 | Preliminary Santa Barbara [EM+FM] | 50 | | Ken Miles | | DQ |
| 30.8.1958 | Preliminary Santa Barbara [EM+FM] | 88 | | Jack McAfee | | 2nd |
| 31.8.1958 | Santa Barbara [EM+FM+GM+HM] | 50 | | Ken Miles | | 1st |
| 31.8.1958 | Santa Barbara [Ladies] | 50 | | Linda Scott | | 2nd |
| 31.8.1958 | Preliminary Thompson [FM+GM] | 62 | | Phil Forno | | 2nd |
| 31.8.1958 | Santa Barbara [EM+FM+GM+HM] | 88 | | Jack McAfee | | 2nd |
| 31.8.1958 | Preliminary Thompson [FM+GM] | 140 | | Bob Holbert | | 1st |
| 31.8.1958 | Santa Barbara [EM+FM+GM+HM] | 188 | #0047 | Stan Sugarman | | 11th |
| 31.8.1958 | Courtland Trophy | | | Roy Schecter | | DNA |
| 1.9.1958 | SCCA National Thompson [BM+CM+DM+EM+FM] | 62 | | Phil Forno | Briggs S. Cunningham | 5th |
| 1.9.1958 | SCCA National Thompson [BM+CM+DM+EM+FM] | 140 | | Bob Holbert | | 4th |
| 7.9.1958 | 500 mile Road America | 19 | | Berlin / Lowe | | DNF |
| 7.9.1958 | 500 mile Road America | 27 | | Erickson / Hugus | | DNF |
| 7.9.1958 | USAC Lime Rock | 33 | #0111 | Art Bunker | | 12th |
| 7.9.1958 | 500 mile Road America | 34 | | Newton Davis | | DNS |
| 7.9.1958 | 500 mile Road America | 42 | #0019 | Causey / Rickert | | 3rd |
| 7.9.1958 | USAC Lime Rock | 71 | | Vic Meinhardt | | 4th |
| 7.9.1958 | 500 mile Road America | 74 | | Sesslar / Lunken | | DNF |
| 13.9.1958 | Tourist Trophy | 22 | #0145 | de Beaufort / Heins | Dr. Porsche | 8th |
| 14.9.1958 | SCCA Regional Meadowdale [EM+FM+GM] | 27 | | Ernie Erickson | | DNA |
| 14.9.1958 | SCCA Regional Meadowdale [BM+CM+DM+BP] | 27 | | Ernie Erickson | | raced |
| 14.9.1958 | SCCA Regional Meadowdale [EM+FM+GM] | 44 | #0019 | Dean Causey | | DNA |
| 14.9.1958 | SCCA Regional Bridgehampton [Modified] | 62 | | Phil Forno | Briggs Cunningham | 2nd |
| 14.9.1958 | Preliminary Bridgehampton [Modified] | 62 | | Phil Forno | Briggs Cunningham | 1st |
| 14.9.1958 | SCCA Regional Meadowdale [EM+FM+GM] | 74 | | Don Sesslar | | DNA |
| 20.9.1958 | GP Watkins Glen | 33 | | Newton Davis | Newton B. Davis | 7th |
| 20.9.1958 | SCCA National Watkins Glen [FM+GM+HM] | 33 | | Newton Davis | Newton B. Davis | 3rd |
| 20.9.1958 | SCCA National Watkins Glen [FM+GM+HM] | 62 | | Phil Forno | Briggs S. Cunningham | DNA |
| 20.9.1958 | GP Watkins Glen | 74 | | Don Sesslar | | 5th |
| 20.9.1958 | SCCA National Watkins Glen [FM+GM+HM] | 74 | | Don Sesslar | | 2nd |
| 20.9.1958 | GP Watkins Glen | 140 | | Bob Holbert | Robert Holbert | 4th |
| 20.9.1958 | SCCA National Watkins Glen [FM+GM+HM] | 140 | | Bob Holbert | Robert Holbert | 1st |
| 21.9.1958 | GP Angola | 15? | #0140 | Ian Fraser Jones | | raced |
| 21.9.1958 | GP Berlin | 26 | #0143 | Christian Heins | Christian Heinz | ?th |
| 21.9.1958 | GP Berlin | 39 | | Carel Godin de Beaufort | Ecurie Maarsbergen | DQ |
| 21.9.1958 | USAC Marlboro | | #0111 | Art Bunker | | 3rd |
| 21.9.1958 | Preliminary Galveston [CM+DM+EM+FM] | | | Bobby Burns | | 3rd |
| 21.9.1958 | Del Mar [Modified] | | | Jack McAfee | | DNA |
| 21.9.1958 | SCCA Regional Galveston [CM+DM+EM+FM+GM] | | | Bobby Burns | | 3rd |
| 28.9.1958 | USAC Watkins Glen | 71 | | Vic Meinhardt | | 4th |
| 28.9.1958 | Hourglass Field [FM+GM+HM] | | | John Davis | | 3rd |
| 28.9.1958 | Hourglass Field [BM+CM+DM+EM] | | #0047 | Stan Sugarman | | 4th |
| 28.9.1958 | Hourglass Field [FM+GM+HM] | | | Jack McAfee | | 1st |
| 28.9.1958 | Hourglass Field [BM+CM+DM+EM] | | | Jack McAfee | | 5th |
| 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] | 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] | 88 | #0137 | Milivoj Bozic | Auto-Moto-Savez Jugoslaviya | 5th |
| 5.10.1958 | SCCA National Vaca Valley [BM+CM+DM+EM+FM] | 88 | | Jack McAfee | | 2nd |
| 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 |
| 11.10.1958 | Preliminary Venice [CM+DM+EM+FM+BP+CP+DP] | 27 | | Roy Schecter | | 3rd |
| 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 | 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 |
| 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 |
| 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 |
| 1.11.1958 | Preliminary 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] | 88 | | Jack McAfee | S. Sugarmann | 1st |
| 2.11.1958 | Oklahoma Petite GP | | | Bobby Burns | | 3rd |
| 2.11.1958 | SCCA Regional Oklahoma [Modified 2.0] | | | Bobby Burns | | 2nd |
| 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 |