| 20.9.1958 | Preliminary Watkins Glen [MG] | 9 | A | Barnie Burnett | Barnie Burnett | 6th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 24 | A | Brad Howes | Bradford B. Howes | 10th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 28 | A | Ed Rickard | Edward T. Rickard, Jr. | 17th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 30 | A | Dan Donoghue | D. C. Donoghue, Jr. | 13th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 53 | A | Ray Henley | Raymond H. Henley | 16th |
| 20.9.1958 | Oulton Park International [S+1.1] | 54 | A | Ken Mackenzie | Ecurie Chiltern | DNA |
| 20.9.1958 | Oulton Park International [S+1.1] | 61 | A Twin Cam | Ted Lund | Ted Lund | ?th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 68 | TD | Charles Ellmers | Charles R. Ellmers | DNA |
| 20.9.1958 | GP Watkins Glen | 75 | A Twin Cam | Jacques DuPont | | DNF |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 95 | A | John Hunter | John G. Hunter, Jr. | 9th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 97 | TF | John Tame | John S. Tame | 21st |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 102 | TC | Arch McNeill | Arch J. McNeill, Jr. | 23rd |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 105 | A | George Valentine | Ecurie Ripley | 5th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 108 | A | Monty Allen | Monty Allen | 4th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 135 | A | Jack Terhaar | | 12th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 147 | TD | Van Conway | | 19th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 149 | TC | Eric O. Pettit | | 20th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 221 | A | Homer Dasey | | 18th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 223 | A | Jim Kennedy | | 15th |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 224 | TD | Albert Foster | | 22nd |
| 20.9.1958 | Preliminary Watkins Glen [MG] | 240 | A | Eben Harrison Sales | | 11th |
| 21.9.1958 | GP Angola | 1 | A | Costa Macedo | | 12th |
| 21.9.1958 | LISCA Lime Rock [MG] | 37 | A | Walter Diver | | ?th |
| 21.9.1958 | LISCA Lime Rock [MG] | 78 | A | Rod Nerney | | ?th |
| 21.9.1958 | LISCA Lime Rock [MG] | 102 | TC | Arch McNeill | | ?th |
| 21.9.1958 | Tour de France | 138 | A | Orsini / Desplas | | raced |
| 21.9.1958 | LISCA Lime Rock [MG] | 221 | TD | Russ Brann | | ?th |
| 21.9.1958 | LISCA Lime Rock [MG] | 222 | TC | Tom Redican | | ?th |
| 21.9.1958 | SCCA Regional Galveston [MG+HM+HP+KP+JP+GT] | | A | Joe Steede | | 1st |
| 21.9.1958 | SCCA Regional Galveston [MG+HM+HP+KP+JP+GT] | | A | Charlie Weller | | DNF |
| 21.9.1958 | SCCA Regional Galveston [MG+HM+HP+KP+JP+GT] | | A | Garry Dundas | | 2nd |
| 21.9.1958 | SCCA Regional Galveston [MG+HM+HP+KP+JP+GT] | | A | Roy Dees | | 4th |
| 21.9.1958 | Del Mar [Novice] | | TC | A. Stewart | | ?th |
| 21.9.1958 | SCCA Regional Galveston [MG+HM+HP+KP+JP+GT] | | A | Henri Bailleres | | 3rd |
| 21.9.1958 | LISCA Lime Rock [MG] | | A | | | ?th |
| 21.9.1958 | SCCA Regional Galveston [MG+HM+HP+KP+JP+GT] | | TD | Carl Whyte | | ?th |
| 27.9.1958 | BRSCC Full Sutton [GT1.6] | | A | Tommy Entwistle | | 3rd |
| 27.9.1958 | BRSCC Full Sutton [GT1.6] | | A | T. L. A. Burgess | | 2nd |
| 27.9.1958 | BRSCC Full Sutton [GT+1.6] | | A | Ted Lund | | 3rd |
| 27.9.1958 | BRSCC Full Sutton [GT1.6] | | A | Ted Lund | | 1st |
| 27.9.1958 | Gardena [Main] | | | Bonnie Bosley | | DNA |
| 27.9.1958 | Preliminary Gardena [Ladies] | | A | Barbara Scott | | 2nd |
| 27.9.1958 | Gardena [Main] | | | Judith Mancini | | DNA |
| 27.9.1958 | Gardena [Main] | | | Jim Campbell | | DNA |
| 27.9.1958 | Gardena [Main] | | | Ed Kamberg | | DNA |
| 27.9.1958 | Consolation Gardena | | Special | Barton Haskell | | 2nd |
| 27.9.1958 | Consolation Gardena | | TD | Floyd Burt | | 3rd |
| 27.9.1958 | Gardena [Main] | | | Robert Stewart | | DNA |
| 27.9.1958 | Preliminary Gardena [Trophy Dash] | | Special | Termite Snyder | | 3rd |
| 27.9.1958 | Preliminary Gardena [Novice] | | Special | Al Golightly | | 2nd |
| 27.9.1958 | Preliminary Gardena [Ladies] | | TD | Bonnie Bosley | | 3rd |
| 28.9.1958 | ICNSCC Ellensburg [FP+GP+HP+IP] | 24 | A | I. B. Knoblauch | | 7th |
| 28.9.1958 | WJC Charterhall [GT] | 31 | A | Tommy Entwistle | T. Entwhistle | ?th |
| 28.9.1958 | WJC Charterhall [S1.5] | 31 | A | Tommy Entwistle | T. Entwhistle | ?th |
| 28.9.1958 | WJC Charterhall [GT] | 32 | A | Jimmy Blumer | J. M. Richmond | ?th |
| 28.9.1958 | WJC Charterhall [S1.5] | 32 | A | Jack Richmond | J. M. Richmond | DNA |
| 28.9.1958 | WJC Charterhall [S1.5] | 33 | A | John Milne | J. E. Milne | DNF |
| 28.9.1958 | WJC Charterhall [GT] | 33 | A | John Milne | J. E. Milne | raced |
| 28.9.1958 | WJC Charterhall [S+1.5] | 40 | A | Ted Lund | T. Lund | DNA |
| 28.9.1958 | WJC Charterhall [GT] | 40 | A Twin Cam | Ted Lund | T. Lund | ?th |
| 28.9.1958 | WJC Charterhall [Racing] | 40 | A | Ted Lund | T. Lund | DNA |
| 28.9.1958 | ICNSCC Ellensburg [FP+GP+HP+IP] | 63 | A | Glen Evans | | 5th |
| 28.9.1958 | ICNSCC Ellensburg [FP+GP+HP+IP] | 74 | A | Ivar Keddis | | DNF |
| 28.9.1958 | WJC Charterhall [GT] | 76 | A | Tim Wilson | T. Y. Wilson | DNA |
| 28.9.1958 | ICNSCC Ellensburg [FP+GP+HP+IP] | 76 | A | Norman DuBosch | | 21st |
| 28.9.1958 | ICNSCC Ellensburg [FP+GP+HP+IP] | 99 | A | Don Rushlight | | 2nd |
| 28.9.1958 | ICNSCC Ellensburg [FP+GP+HP+IP] | 171 | A | Richard Miller | | 3rd |
| 28.9.1958 | ICNSCC Ellensburg [FP+GP+HP+IP] | 173 | TC | David Reilly | | 10th |
| 28.9.1958 | ICNSCC Ellensburg [FP+GP+HP+IP] | 211 | A | Austin Wolff | | 6th |
| 28.9.1958 | Hourglass Field [Sedan+MG] | | TD | Don Burhop | | 3rd |
| 28.9.1958 | Hourglass Field [Sedan+MG] | | TD Mk II | Jack Gleghorn | | 1st |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 1 | A | George Schaab | | DNA |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 4 | A | Loren Lorenzetti | | 3rd |
| 5.10.1958 | SCCA National Virginia [FP+GP+HM] | 7 | A | William Verbeck | | 11th |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 9 | A | David Full | | 11th |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 18 | A | Richard Stolz | | 6th |
| 5.10.1958 | SCCA Regional Thompson [Modified+UR] | 24 | A | Alan Ratcliffe | | 15th |
| 5.10.1958 | SCCA National Vaca Valley [EP+FP] | 32 | A | Bob Potter | | DNF |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 33 | A | John Sheldon | | 8th |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 36 | A | Howard Humphries | | 12th |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 37 | A | Ken Green | | 9th |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 41 | A | Radford Boss | | 7th |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 42 | A | Doug Diefenderfer | | 10th |
| 5.10.1958 | Preliminary Vaca Valley [MG] | 51 | A | Pelham Burnett | | 9th |
| 5.10.1958 | SCCA National Vaca Valley [EP+FP] | 51 | A | Pelham Burnett | | DNF |
| 5.10.1958 | SCCA National Vaca Valley [EP+FP] | 52 | A | Fraser Sibbald | | DNF |
| 5.10.1958 | SCCA Regional Thompson [GP+HP] | 56 | TD | Clifford Ey | | 10th |
| 5.10.1958 | Preliminary Vaca Valley [MG] | 56 | TD | Marshall Swope | | 10th |
| 5.10.1958 | SCCA National Vaca Valley [GM+HM+GP+HP] | 56 | TD | Marshall Swope | | 15th |
| 5.10.1958 | SCCA National Vaca Valley [EP+FP] | 62 | A | Lee Talbot | | DNF |
| 5.10.1958 | SCCA Regional Thompson [GP+HP] | 65 | TD | Robert Purdy | | 16th |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 68 | A | Hayward Anderson | | 5th |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 81 | A | Don Urian | Donald Urian | 1st |
| 5.10.1958 | SCCA Regional Thompson [MG+Sedan] | 93 | A | Earl Simpson | | 2nd |
| 5.10.1958 | SCCA National Vaca Valley [EP+FP] | 98 | A | Ed Leslie | | DNF |
| 5.10.1958 | SCCA National Virginia [FP+GP+HM] | 123 | A | Murray Clark | | 6th |
| 5.10.1958 | SCCA National Vaca Valley [BM+CM+DM+EM+FM] | 158 | A | Dennis Riley | | 16th |
| 5.10.1958 | SCCA National Vaca Valley [GM+HM+GP+HP] | 173 | TF | Bob Downing | | 12th |
| 5.10.1958 | SCCA National Vaca Valley [EP+FP] | 248 | A | Rick Hilgers | | 22nd |
| 5.10.1958 | SCCA National Vaca Valley [BM+CM+DM+EM+FM] | 258 | A | Eugene Smith | | 18th |