| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 12 | A | Austin Wolff | | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 17 | A | Bill Kemper | | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 31 | A | Ed La Mantia | Ed La Mantia | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 31 | A | Leon Mandel | Ed La Mantia | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 40 | A | Jack Dalton | T. R. Langley | ?th |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 56 | TD | Marshall Swope | John Miller | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 66 | A Twin Cam | Jack Flaherty | Kjell H. Qvale | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 71 | A | Richard Miller | | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 75 | A | Jim Dinsmore | | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 83 | A | Chuck Dodge | | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 96 | A | Don Rushlight | | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 103 | A | John Hall | | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 110 | A | Bob Winkelmann | Ed Crooks | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 131 | A | Randall Cowherd | William T. Ribbs | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 137 | TF | John Miller | Charlotte M. Duncan | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 142 | A | Ben Thrall | Ben Thrall | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 158 | A | Eugene Smith | Dennis Riley | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 203 | A | Bob Glaeser | Bob Glasser | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 215 | TC | Bob Patterson | Robert Patterson | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 223 | A | Charles H. Serlis | Charles H. Serlis | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 312 | A | Brian Hopkins | Brian Hopkins | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 444 | A | Tom Welch, Jr. | | DNA |
| 3.8.1958 | Preliminary Minden [Ladies+FIII+MG+Novice] | | TD | Bob Downing | | ?th |
| 4.8.1958 | Autosport Mallory Park [PS1.6] | 61 | A | Bob Vincent | R. Vincent | DNA |
| 4.8.1958 | Autosport Mallory Park [PS1.6] | 64 | A | Chris Tooley | C. P. Tooley | DNA |
| 4.8.1958 | Autosport Mallory Park [PS1.6] | 65 | A | D. J. Hayles | Ecuire Chiltern | DNA |
| 4.8.1958 | Autosport Mallory Park [PS1.6] | 67 | | Ken Mackenzie | Ecuire Chiltern | DNA |
| 4.8.1958 | Autosport Mallory Park [PS1.6] | 68 | A | J. A. P. Trafford | J. A. P. Trafford | DNA |
| 10.8.1958 | Kanonloppet [GT2.0] | 3 | A Twin Cam | Bo Elmhorn | | 7th |
| 10.8.1958 | Kanonloppet [GT2.0] | 6 | A | Bo Josefsson | | raced |
| 10.8.1958 | Kanonloppet [GT2.0] | 9 | A | Vincent Etzner | | 12th |
| 10.8.1958 | Kanonloppet [GT2.0] | 10 | A Twin Cam | Yngve Rosqvist | | raced |
| 10.8.1958 | Kanonloppet [GT2.0] | 19 | | Bertil Nässil | | raced |
| 16.8.1958 | Harewood Acres [FP] | 1 | A | Norm Shier | Norm Shier | DNA |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | 2 | TC | Charles H. Teicher | Charles H. Teicher | DNA |
| 16.8.1958 | Harewood Acres [FP] | 3 | A | Richard Soulsby | Richard Soulsby | DNA |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 5 | TD | Albert Foster | | 22nd |
| 16.8.1958 | Harewood Acres [FP] | 7 | A | Robert Soch | Robert S. Soch | 2nd |
| 16.8.1958 | Harewood Acres [FP] | 12 | A | Art Smith | Ecurie Pip | DNA |
| 16.8.1958 | Harewood Acres [FP] | 17 | A | Harry Entwistle | Gulliver Motors Ltd. | 3rd |
| 16.8.1958 | Harewood Acres [FP] | 22 | A | Peter D. J. Tirion | Peter D. J. Tirion | DNA |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 23 | A | Grant Crenshaw | | 17th |
| 16.8.1958 | Harewood Acres [SR] | 27 | Special | Leonard Liggins | La Salle Auto-Marine | DNA |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | 32 | TD | Norm Croucher | Norman M. Croucher | 5th |
| 16.8.1958 | SCCA National Milwaukee [BM+CM+DM+EM+FM+GM] | 33 | A Twin Cam | Roger Simonetti | | 18th |
| 16.8.1958 | Harewood Acres [FP] | 34 | A | Walter Sayers | Ecurie H.A.S.A. | DNA |
| 16.8.1958 | Harewood Acres [FP] | 37 | A | James Odenback | James Ed Odenback | DNA |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | 38 | TC | Walt Mackay | Walter MacKay | DNA |
| 16.8.1958 | Harewood Acres [FP] | 41 | A | Don Chambers | Don Chambers | DNA |
| 16.8.1958 | Harewood Acres [FP] | 42 | A Coupe | Ross de St. Croix | N. Ross de St. Croix | DNA |
| 16.8.1958 | Harewood Acres [FP] | 46 | A | John Morawski | Ecurie Sans Sous | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 46 | A | John Morawski | Ecurie Sans Sous | DNA |
| 16.8.1958 | Harewood Acres [FP] | 49 | A | Kuno Lubja | Kuno Lubja | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 49 | A | Kuno Lubja | Kuno Lubja | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 55 | A | Henry Howarth | Downtown Motor Sales | DNA |
| 16.8.1958 | Harewood Acres [FP] | 55 | A | Henry Howarth | Downtown Motor Sales | DNA |
| 16.8.1958 | Harewood Acres [SR] | 58 | Special | Richard Baker | Richard Baker | DNA |
| 16.8.1958 | Harewood Acres [FP] | 61 | A | John Brennan | John L. Brennen, Jr. | raced |
| 16.8.1958 | Harewood Acres [FP] | 67 | A | John Alden | W. John Alden Inc. | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 68 | A | Emrys Jones | Emrys Jones | DNA |
| 16.8.1958 | Harewood Acres [FP] | 68 | A | Emrys Jones | Emrys Jones | DNA |
| 16.8.1958 | Harewood Acres [FP] | 70 | A Coupe | Bill Hammond | Ecurie Grande | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 70 | A Coupe | Bill Hammond | Ecurie Grande | DNA |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 70 | TD | Pat Robertson | | 24th |
| 16.8.1958 | Harewood Acres [Le Mans] | 71 | A | William Hopkins | Ecurie Grande | DNA |
| 16.8.1958 | Harewood Acres [FP] | 71 | A | William Hopkins | Ecurie Grande | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 74 | A | Walter Chippindale | W. E, Chippindale | DNA |
| 16.8.1958 | Harewood Acres [FP] | 74 | A | Walter Chippindale | W. E, Chippindale | DNA |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | 76 | TF | Edgar Vollaro | Ecurie Grisley Torque | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 76 | TF | Edgar Vollaro | Ecurie Grisley Torque | ?th |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 78 | A | Ron Letellier | | 8th |
| 16.8.1958 | Harewood Acres [Le Mans] | 91 | TC | Al Tucker | A. H. Tucker | DNA |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | 91 | TC | Al Tucker | A. H. Tucker | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 94 | TD 1500M | Don Hambly | D. Hambly | DNA |
| 16.8.1958 | Harewood Acres [SR] | 94 | TD 1500M | Don Hambly | D. Hambly | DNA |
| 16.8.1958 | Harewood Acres [FP] | 94 | TD 1500M | Don Hambly | D. Hambly | raced |
| 16.8.1958 | Harewood Acres [FP] | 99 | A | D. Craddock | D. Craddock | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 99 | A | D. Craddock | D. Craddock | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 109 | A | Al Tucker | Noel Morton | DNA |
| 16.8.1958 | Harewood Acres [FP] | 109 | A | Al Tucker | Noel Morton | DNA |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | 110 | TD | Bob Deull | Ecurie Pip | ?th |
| 16.8.1958 | Harewood Acres [Le Mans] | 110 | TD | Bob Deull | Ecurie Pip | DNA |
| 16.8.1958 | Harewood Acres [SR] | 112 | TC | Dave Graham | D. Graham | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 112 | TC | Dave Graham | D. Graham | DNA |
| 16.8.1958 | Harewood Acres [SR] | 116 | Special | Huffman / Wright | Green Grables Garage, Ltd. | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 116 | Special | Huffman / Wright | Green Grables Garage, Ltd. | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 130 | A | Thomas Leslie | T. Leslie | DNA |
| 16.8.1958 | Harewood Acres [FP] | 130 | A | Thomas Leslie | T. Leslie | DNA |
| 16.8.1958 | Harewood Acres [FP] | 169 | A | G. Stewart | Ecurie Derelicti | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 169 | A | G. Stewart | Ecurie Derelicti | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 177 | A | John Wendt | J. R. Wendt | DNA |
| 16.8.1958 | Harewood Acres [FP] | 177 | A | John Wendt | J. R. Wendt | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 191 | TC | Paul Cooke | P. B. Cooke | DNA |
| 16.8.1958 | Harewood Acres [SR] | 191 | TC | Paul Cooke | P. B. Cooke | DNA |
| 16.8.1958 | Harewood Acres [FP] | 193 | A | Barry Morton | B. H. Morton | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 193 | A | Barry Morton | B. H. Morton | DNA |
| 16.8.1958 | Harewood Acres [Le Mans] | 333 | A | Brown / McEachern | Bruce McEachern Sports Cars | DNA |
| 16.8.1958 | Harewood Acres [FP] | 333 | A | Brown / McEachern | Bruce McEachern Sports Cars | DNA |
| 16.8.1958 | Harewood Acres [FP] | | TC | | | raced |
| 16.8.1958 | Harewood Acres [FP+GP+MG] | | TF | E. Holland | | ?th |