| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 8 | | Glenn Lazar | | raced |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 56 | | Gene Hobbs | | DNA |
| 4.5.1958 | Preliminary Virginia [FP+GP+HP+KP+HM] | 83 | | John Cuevas | | DNA |
| 4.5.1958 | Preliminary Virginia [FP+GP+HP+KP+HM] | 144 | | Bruce Jennings | | DNA |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 144 | | Bruce Jennings | | DNA |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 20 | | Don Dickey | Donald Dickey | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 27 | | Leon Robertson | Leon Robertson | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 57 | | Dennis McCue | Dennis McCue | DNA |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 57 | | George Horsfall | George Horsfall | DNA |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 70 | | Fred Block | Fred Block | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 94 | | Roger Mace | Roger Mace | DNA |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 94 | | Roger Mace | Roger Mace | 1st |
| 10.5.1958 | Novice Tracy [Production 1.6] | 96 | | Robert Peck | Robert R. Peck | DNA |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 102 | | Jack Woodard | Jack Woodard | 3rd |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 107 | | Charles Kuhn | Charles Kuhn | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 115 | | Ed Hodges | Ed Hodges | 4th |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 116 | | Bob Herda | Robert Herda | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 116 | | Duncan Reynard | Duncan Reynard | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 126 | | Bill Minor | William Minor, Jr. | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 129 | | Roland Shirley | Roland Shirley | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 134 | | John France | John France | DNA |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 136 | | Emil Pardee | Emil Pardee | 4th |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 139 | | Dan Herman | Dan W. Herman | 5th |
| 10.5.1958 | Novice Tracy [Production 1.6] | 163 | | Robert Skidmore, Jr. | Robert Skidmore, Jr. | DNA |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 170 | | Ed Vincent | Ed Vincent | 2nd |
| 10.5.1958 | Novice Tracy [Production 1.6] | 175 | | Al Chapins | Al Chapins | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 176 | | George Grinzewitsch | George Grinzewitsch | 1st |
| 10.5.1958 | Preliminary Tracy [Production 1.6] | 180 | | Carl Meyer | Carl B. Meyer | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 183 | | Tom Hixon | Thomas Hixon | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | 194 | | Richard Lee | Richard S. Lee | DNA |
| 10.5.1958 | Novice Tracy [Production 1.6] | | | Daniel Barnhart | | 3rd |
| 10.5.1958 | Novice Tracy [Production 1.6] | | | William Slater | | 5th |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 20 | | Don Dickey | Donald Dickey | 4th |
| 11.5.1958 | Targa Florio | 26 | #100913 or 12303 | Pucci / von Hanstein | Porsche KG | 6th |
| 11.5.1958 | Hawaii [Match] | 41 | | D. D. Michelmore | D. D. Michelmore | 4th |
| 11.5.1958 | Hawaii [Production 1.6/Sedan] | 41 | | D. D. Michelmore | D. D. Michelmore | 1st |
| 11.5.1958 | Hawaii [S1.6] | 41 | | D. D. Michelmore | D. D. Michelmore | 6th |
| 11.5.1958 | Hawaii [Match] | 55 | | Jimmy Castle | Jimmy Castle | DNA |
| 11.5.1958 | Hawaii [S1.6] | 55 | | Jimmy Castle | Jimmy Castle | 11th |
| 11.5.1958 | Hawaii [Locals] | 55 | | Jimmy Castle | Jimmy Castle | 19th |
| 11.5.1958 | Hawaii [Production 1.6/Sedan] | 55 | | Jimmy Castle | Jimmy Castle | 4th |
| 11.5.1958 | SCCA Regional Tracy [Production Group A] | 57 | | George Horsfall | George Horsfall | 4th |
| 11.5.1958 | Hawaii [Locals] | 64 | | Gil Geer | Gil Geer | 13th |
| 11.5.1958 | Hawaii [S1.6] | 64 | | Gil Geer | Gil Geer | 8th |
| 11.5.1958 | Hawaii [Match] | 64 | | Gil Geer | Gil Geer | DNA |
| 11.5.1958 | Hawaii [Production 1.6/Sedan] | 64 | | Gil Geer | Gil Geer | 2nd |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 70 | | Fred Block | Fred Block | DNA |
| 11.5.1958 | Hawaii [S1.6] | 72 | | Ted Fukuda | Ted Fukuda | 9th |
| 11.5.1958 | Hawaii [Locals] | 72 | | Ted Fukuda | Ted Fukuda | 17th |
| 11.5.1958 | Hawaii [S+1.6] | 72 | | Ted Fukuda | Ted Fukuda | DNA |
| 11.5.1958 | Hawaii [Match] | 72 | | Ted Fukuda | Ted Fukuda | DNA |
| 11.5.1958 | Hawaii [Production 1.6/Sedan] | 72 | | Ted Fukuda | Ted Fukuda | 3rd |
| 11.5.1958 | Targa Florio | 76 | | Alfonso Thiele | | DNS |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 94 | | Roger Mace | Roger Mace | 14th |
| 11.5.1958 | SCCA Regional Tracy [Production Group B] | 102 | | Jack Woodard | | 2nd |
| 11.5.1958 | SCCA Regional Tracy [Production Group A] | 107 | | Charles Kuhn | Charles Kuhn | 2nd |
| 11.5.1958 | Hawaii [Production 1.6/Sedan] | 112 | | Hal Melleney | | 5th |
| 11.5.1958 | Hawaii [Locals] | 112 | | Hal Melleney | | 22nd |
| 11.5.1958 | SCCA Regional Tracy [Production Group B] | 116 | | Bob Herda | Robert Herda | 14th |
| 11.5.1958 | SCCA Regional Tracy [Production Group B] | 134 | | John France | | 12th |
| 11.5.1958 | SCCA Regional Tracy [Production Group B] | 136 | | Emil Pardee | Emil Pardee | 1st |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 139 | | Dan Herman | Dan W. Herman | 11th |
| 11.5.1958 | SCCA Regional Tracy [Production Group A] | 155 | | Peter Talbot | Dr. Peter S. Talbot | 1st |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 170 | | Ed Vincent | Ed Vincent | 17th |
| 11.5.1958 | SCCA Regional Tracy [Production Group B] | 176 | | George Grinzewitsch | George Grinzewitsch | 3rd |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 180 | | Carl Meyer | Carl B. Meyer | 8th |
| 11.5.1958 | SCCA Regional Tracy [Production Group B] | 180 | | Carl Meyer | Carl B. Meyer | DNA |
| 15.5.1958 | Eläintarhanajo [GT] | 1 | | Arne Lindberg | | 5th |
| 15.5.1958 | Eläintarhanajo [GT] | 2 | #103546 | Carl-Gunnar Hammarlund | | 2nd |
| 15.5.1958 | Eläintarhanajo [GT] | 3 | | Folke Sjöberg | | 6th |
| 15.5.1958 | Aspern [GT1.6] | 60 | | Richard von Frankenberg | Ecurie Maarsbergen | 1st |
| 15.5.1958 | Aspern [GT1.6] | 61 | | Max Kraus | ÖASC | raced |
| 15.5.1958 | Aspern [GT1.6] | 62 | | Ludwig Blendl | Ludwig Blendl | 3rd |
| 15.5.1958 | Aspern [GT1.6] | 63 | | Dieter Feth | Dieter Feth | raced |
| 15.5.1958 | Aspern [GT1.6] | 64 | | Siegfried Günther | Siegfried Günther | 2nd |
| 15.5.1958 | Aspern [GT1.6] | 65 | | Robert Küderli | Robert Küderli | raced |
| 15.5.1958 | Aspern [GT1.6] | 66 | | Herbert Nosek | ÖASC | raced |
| 15.5.1958 | Aspern [GT1.6] | 68 | | Leo Levine | Leo Levine | raced |
| 15.5.1958 | Aspern [GT1.6] | 69 | | Anton Urban | Anton Urban | raced |
| 15.5.1958 | Aspern [GT1.6] | 70 | | Rolf Markl | ÖASC | raced |
| 15.5.1958 | Aspern [GT1.6] | 71 | | F. Gradischnigg | Porsche Club Ö | raced |
| 15.5.1958 | Aspern [GT1.6] | 84 | | Hermann Kunz | Hermann Kunz | 12th |
| 18.5.1958 | SCCA National Cumberland [FP] | 13 | | M. A. Cappiello | Maj. M. G A. Cappiello | 3rd |
| 18.5.1958 | GP Spa [GT2.0] | 21 | | Jim Clark | Border Reivers | 5th |
| 18.5.1958 | SCCA National Cumberland [FP] | 24 | | Buel Kinne | Buel W. Kinne | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 32 | | Bruce Jennings | Bruce R. Jennings | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 33 | | Emil Pupulidy | E. Pupulidy | 1st |
| 18.5.1958 | GP Spa [GT2.0] | 38 | | Paul Nokin | | 3rd |
| 18.5.1958 | SCCA National Cumberland [FP] | 56 | | Gene Hobbs | E. E. Hobbs, Jr. | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 69 | | Nagle Bridwell | Nagle Bridwell | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 83 | | John Cuevas | John Cuevas | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 84 | | Morrow Decker | Cdr. S. M. Decker, Jr. | raced |
| 18.5.1958 | SCCA National Cumberland [FP] | 93 | | Horace Ott | Horace A. Ott | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 100 | | Antonio Valdes-Dapena | Antonio Valdes-Dapena | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 115 | | Glenn Lazar | Glenn C. Lazar | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 117 | | Edward Eichenlaub | E. Boyd Eichenlaub, Jr. | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 130 | | Manfred Holder | Manfred Holder | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 135 | | Bud Fehnel | C. F. Fehnel, Jr. | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | 137 | | Don Wolf | Donald E. Wolf | DNA |
| 18.5.1958 | SCCA National Cumberland [FP] | | | Dick Nash | David L. Herson | DNA |