| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 25 | A | Ted Hainis | Juanita Anderson | DNA |
| 6.7.1958 | SCCA Regional Vaca Valley [FM+GM+HM] | 28 | TD | Jack Anderson | Jack Anderson | 14th |
| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 49 | TC | Morton Gray | Lendal Gray | 23rd |
| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 66 | A Twin Cam | Jack Flaherty | Kjell Qvale | raced |
| 6.7.1958 | SCCA Regional Vaca Valley [FP+GP+HP] | 81 | A | John Jordan | John Jordan | DNA |
| 6.7.1958 | SCCA Regional Vaca Valley [FM+GM+HM] | 149 | Special | Jerry Lewis | Jerry Lewis | 17th |
| 6.7.1958 | SCCA Regional Vaca Valley [FM+GM+HM] | 158 | A | Dennis Riley | Dennis Riley | DNA |
| 12.7.1958 | BRSCC Full Sutton [GT] | 40 | A | Tommy Entwistle | | 9th |
| 12.7.1958 | BRSCC Full Sutton [GT] | 42 | A | J. H. Southam | | 10th |
| 12.7.1958 | BRSCC Full Sutton [GT] | 44 | A | J. H. V. Cross | | 4th |
| 12.7.1958 | BRSCC Full Sutton [GT] | 46 | A | W. R. Whitwell | | 11th |
| 13.7.1958 | LISCA Lime Rock [FP] | | A | Robert Wells | | 1st |
| 13.7.1958 | LISCA Lime Rock [FP] | | TD | Russ Brann | | ?th |
| 19.7.1958 | Berwick [Novice] | 40 | A | Eben Sales | | 2nd |
| 19.7.1958 | Berwick [MG] | 40 | A | Eben Sales | | 3rd |
| 19.7.1958 | Berwick [MG] | 95 | A | George Valentine | | 2nd |
| 19.7.1958 | Berwick [MG] | 96 | A | Millard Ripley | | 1st |
| 19.7.1958 | BEMC Harewood Acres [MG] | | TF | John Tame | John S. Tame | ?th |
| 19.7.1958 | BEMC Harewood Acres [MG] | | TD | Norm Croucher | Norm Croucher | ?th |
| 19.7.1958 | BEMC Harewood Acres [Production 1.5] | | A | Robert Soch | R. A. Soch | 3rd |
| 19.7.1958 | Berwick [GP+HP] | | | | | raced |
| 19.7.1958 | Berwick [GP+HP] | | | | | raced |
| 19.7.1958 | Berwick [GP+HP] | | | | | raced |
| 19.7.1958 | Berwick [GP+HP] | | | | | raced |
| 19.7.1958 | BEMC Harewood Acres [MG] | | A | Robert Soch | R. A. Soch | 2nd |
| 19.7.1958 | BEMC Harewood Acres [MG] | | A | Jack Broad | Jack Broad | 1st |
| 19.7.1958 | BEMC Harewood Acres [MG] | | TC | Al Tucker | A. H. Tucker | ?th |
| 19.7.1958 | BEMC Harewood Acres [MG] | | A | Art Smith | Art Smith, Jr. | 3rd |
| 20.7.1958 | SCCA Regional Thompson [FP] | 5 | A | Chris White | | 15th |
| 20.7.1958 | SCCA Regional Thompson [FP] | 18 | A | Edward Richard | | DNA |
| 20.7.1958 | SCCA Regional Thompson [FP] | 22 | A | Wain Donoghue | | 13th |
| 20.7.1958 | SCCA Regional Thompson [FP] | 39 | A | Earl Simpson | | DNA |
| 20.7.1958 | SCCA Regional Thompson [FP] | 50 | A | James Stevens | | DNA |
| 20.7.1958 | SCCA Regional Thompson [GP] | 59 | TD | John Voss | | raced |
| 20.7.1958 | SCCA Regional Thompson [GP] | 60 | TC | Eric O. Pettit | | raced |
| 20.7.1958 | SCCA Regional Thompson [FP] | 74 | A | Henry Van Deusen | | DNF |
| 20.7.1958 | SCCA Regional Thompson [FP] | 93 | A | Earl Simpson | | 11th |
| 20.7.1958 | SCCA Regional Thompson [FP] | 94 | A | Richard Kinsey | | 12th |
| 20.7.1958 | SCCA Regional Thompson [FP] | 180 | A | Don Urian | | 9th |
| 26.7.1958 | MCMC Oulton Park [Closed] | 22 | A | Doreen Harris | Reg Harris (M/cr.) Ltd. | 9th |
| 26.7.1958 | MCMC Oulton Park [S1.5] | 22 | A | Doreen Harris | Reg Harris (M/cr.) Ltd. | DNA |
| 26.7.1958 | MCMC Oulton Park [S1.5] | 79 | TD | Harry Ratcliffe | Harry Ratcliffe | DNA |
| 26.7.1958 | MCMC Oulton Park [Closed] | 88 | A | Tom Threlfall | Tom Threlfall | 5th |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 12 | A | Austin Wolff | | DNA |
| 3.8.1958 | SCCA Regional Shelton [S1.5] | 17 | A | Bill Kemper | | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS1.5] | 17 | A | Bill Kemper | | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 31 | A | Leon Mandel | Ed La Mantia | DNA |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 31 | A | Ed La Mantia | Ed La Mantia | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 31 | A | Ed La Mantia | Ed La Mantia | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 40 | A | Jack Dalton | T. R. Langley | ?th |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 40 | A | Jack Dalton | T. R. Langley | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 56 | TD | Marshall Swope | John Miller | DNA |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 56 | TD | Marshall Swope | John Miller | 12th |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 66 | A Twin Cam | Jack Flaherty | Kjell H. Qvale | DNA |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 66 | A Twin Cam | Jack Flaherty | Kjell 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 [S1.5] | 96 | A | Don Rushlight | | 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 | SCCA Regional Shelton [S1.5] | 103 | A | John Hall | | DNA |
| 3.8.1958 | Preliminary Minden [MGA+AH+Super+Veloce] | 110 | A | Bob Winkelmann | Ed Crooks | DNA |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 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 | SCCA Regional Minden [FP+GP+HP] | 131 | A | Randall Cowherd | William Ribbs | 10th |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 137 | TF | John Miller | Charlotte M. Duncan | DNA |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 137 | TF | Charlotte Duncan | Charlotte M. Duncan | DNA |
| 3.8.1958 | SCCA Regional Minden [FP+GP+HP] | 142 | A | Ben Thrall | Ben Thrall | 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] | 225 | A | Elroy Anderson | Mrs. Elroy Anderson | DNA |
| 3.8.1958 | SCCA Regional Minden [FM+GM+HM] | 228 | Special | Jack Anderson | Jack H. Anderson | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 293 | A | Charley Monte | Charley Monte | DNA |
| 3.8.1958 | Novice Minden [FP+GP+HP] | 299 | TF | P. H. Beam | P. H. Beam | 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 | A | 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] | 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] | 17 | A | Harry Entwistle | Gulliver Motors Ltd. | 3rd |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 23 | A | Grant Crenshaw | | 17th |
| 16.8.1958 | SCCA National Milwaukee [BM+CM+DM+EM+FM+GM] | 33 | A Twin Cam | Roger Simonetti | | 18th |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 70 | TD | Pat Robertson | | 24th |
| 16.8.1958 | SCCA National Milwaukee [FP+GP+HM] | 78 | A | Ron Letellier | | 8th |