| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 35 | | John P. Young | John P. Young | DNA |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 39 | | James Lowe | James R. Lowe | DNA |
| 15.5.1958 | Eläintarhanajo | 1 | | Holger Laine | | 11th |
| 15.5.1958 | Eläintarhanajo | 2 | | David Piper | | 8th |
| 15.5.1958 | Aspern [S1.5] | 22 | | John Campbell-Jones | Dan Margulies | DNF |
| 18.5.1958 | Preliminary Cumberland [Ladies] | 2 | #323 | Margaret Wyllie | Margaret J. Wyllie | 2nd |
| 18.5.1958 | SCCA National Cumberland [GM+HM] | 2 | #323 | M. R. J. Wyllie | Margaret J. Wyllie | ?th |
| 18.5.1958 | SCCA National Cumberland [GM+HM] | 35 | | Frank Baptista | Continental Motors, Ltd. | 1st |
| 18.5.1958 | SCCA National Cumberland [GM+HM] | 45 | | Gilbert Geitner | Major Gil Geitner | DNA |
| 18.5.1958 | SCCA National Cumberland [GM+HM] | 54 | | Robert Weiler | Robert Weiler | DNA |
| 18.5.1958 | SCCA National Cumberland [GM+HM] | 116 | | Floyd Aaskov | Louis C. Bartol | DNA |
| 18.5.1958 | SCCA National Cumberland [GM+HM] | 133 | #133 | Tom Gilmour | Thomas Gilmour | raced |
| 18.5.1958 | LISCA Lime Rock [GM+HM+EP] | | | Thomas Scatchard | | ?th |
| 18.5.1958 | LISCA Lime Rock [GM+HM+EP] | | | Sy Kaback | | ?th |
| 24.5.1958 | BRSCC Full Sutton [SR/R] | 22 | | Tom Dickson | | 2nd |
| 24.5.1958 | BRSCC Full Sutton [SR] | 22 | | Tom Dickson | | 2nd |
| 24.5.1958 | BRSCC Full Sutton [SR1.5] | 22 | | Tom Dickson | | 1st |
| 24.5.1958 | BRSCC Full Sutton [SR1.5] | 23 | | Stuart Dodd | | 3rd |
| 24.5.1958 | BRSCC Full Sutton [SR] | 23 | | Stuart Dodd | | 11th |
| 24.5.1958 | BRSCC Full Sutton [SR1.5] | 29 | | Lewis Bramley | | 6th |
| 24.5.1958 | BRSCC Full Sutton [SR1.5] | 30 | | Bill Allen | | 4th |
| 24.5.1958 | BRSCC Full Sutton [SR] | 30 | | Bill Allen | | 12th |
| 24.5.1958 | BRSCC Full Sutton [SR1.5] | 31 | | B. R. Potter | | 11th |
| 24.5.1958 | BRSCC Full Sutton [SR1.5] | 32 | | Ralph Walker | | 9th |
| 24.5.1958 | BRSCC Full Sutton [SR] | 32 | | Ralph Walker | | 13th |
| 24.5.1958 | BRSCC Full Sutton [SR] | 34 | | Greg Wood | | 16th |
| 24.5.1958 | BRSCC Full Sutton [SR1.5] | 37 | #268 | Peter Anders | | 10th |
| 24.5.1958 | BRSCC Full Sutton [SR1.5] | 39 | | John Wagstaff | | 7th |
| 24.5.1958 | Whitsun Goodwood | | | Bill Frost | | 6th |
| 24.5.1958 | Whitsun Goodwood | | | Bob Hicks | | 5th |
| 25.5.1958 | GP des Frontières | 8 | #192 | André Wicky | | DNF |
| 25.5.1958 | GP des Frontières | 22 | | David Piper | | 8th |
| 25.5.1958 | GP des Frontières | 28 | #311 | John Campbell-Jones | | 5th |
| 25.5.1958 | GP des Frontières | 34 | #182? | Gordon Fowell | | 6th |
| 25.5.1958 | GP des Frontières | 36 | #290=>184 | Jimmy Blumer | | 3rd |
| 25.5.1958 | National Open Crystal Palace [S1.1] | | | Alan Stacey | | 1st |
| 25.5.1958 | Hourglass Field [Modified] | | | Eugene Scholl | | 3rd |
| 25.5.1958 | National Open Crystal Palace [S1.1] | | #506 | Mike Taylor | | 3rd |
| 25.5.1958 | National Open Crystal Palace [S1.1] | | | Innes Ireland | | 2nd |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 1 | | Stuart Dodd | C. S. Dodd | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 4 | | Lewis Bramley | L. I. Bramley | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 6 | | Tom Dickson | Dickson Motors (Perth) Ltd. | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 8 | | Len Gibbs | L. Gibbs | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 9 | | Barry Harpin | B. Harpin | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 10 | | Bill Allen | W. E. J. Allen | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 12 | | John Burgess | Ecurie White Rose | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 14 | | Colin Escott | C. G. Escott | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 15 | | Peter Arundell | Cranham Service Station | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 17 | | John Mitchell | E. J. B. Mitchell | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 28 | | David Brough | Team Sapphire | ?th |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 29 | | Mike Dickens | Team Sapphire | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 30 | | Bob Staples | Ecurie Gnuts | DNA |
| 26.5.1958 | NSCC Mallory Park [S1.5] | 69 | | Lionel Mayman | Kay Garages | ?th |
| 31.5.1958 | Preliminary La Junta [BM+CM+DM+EM+FM+GM] | 2 | | Todd Aikens | | 7th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 8 | #275 | Charles Moran | | 10th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 12 | | Floyd Aaskov | | 4th |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 21 | | Byron J. Snow, Jr. | Daniel Hernandez | DNA |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 21 | | Warren Rohlfs | | 8th |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 27 | | Skip Conklin | Skip Conklin | DNA |
| 31.5.1958 | Preliminary La Junta [BM+CM+DM+EM+FM+GM] | 29 | | Robin Benson | | 8th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 35 | | Frank Baptista | | DNF |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 39 | | James Lowe | James Rowland Lowe | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 39 | | Marion Lowe | James Rowland Lowe | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 44 | | Frank Monise | Frank Monise | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 102 | | Jack Nethercutt | Jack Nethercutt | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 116 | | Chuck Schroeder | Chuck Schroeder | DNA |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 136 | | Sy Kaback | | 12th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 141 | | Joe Helweg | | DNF |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.0] | 251 | | Ken Miles | Elmer Grimsgaard | DNA |
| 1.6.1958 | SCCA Regional La Junta [FM+GM+HM+EP+FP+GP] | 2 | | Todd Aikens | | 2nd |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 21 | | Byron J. Snow, Jr. | Daniel Hernandez | DNA |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 27 | | Skip Conklin | Skip Conklin | 6th |
| 1.6.1958 | 1000 km Nürburgring | 28 | #290=>184 | Blumer / Power | Car Exchange | DNF |
| 1.6.1958 | 1000 km Nürburgring | 29 | #510 | Piper / Greene | David Piper | 15th |
| 1.6.1958 | SCCA Regional La Junta [FM+GM+HM+EP+FP+GP] | 29 | | Robin Benson | | 1st |
| 1.6.1958 | 1000 km Nürburgring | 35 | | Pierre Berchem | Pierre Berchem | DNS |
| 1.6.1958 | 1000 km Nürburgring | 36 | #311 | Horridge / Monaco | Dan Margulies | DNF |
| 1.6.1958 | Santa Barbara [Ladies] | 39 | | Marion Lowe | James Rowland Lowe | 3rd |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 39 | | James Lowe | James Rowland Lowe | 9th |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 44 | | Frank Monise | Frank Monise | 5th |
| 1.6.1958 | Consolation Santa Barbara [Modified] | 102 | | Jack Nethercutt | Jack Nethercutt | ?th |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 102 | | Jack Nethercutt | Jack Nethercutt | DNQ |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 116 | | Chuck Schroeder | Chuck Schroeder | 22nd |
| 1.6.1958 | SCCA Regional Dunkirk [FM+GM+HM] | 133 | #133 | Tom Gilmour | | DNF |
| 1.6.1958 | Santa Barbara [FM+GM+HM] | 251 | | Ken Miles | Elmer Grimsgaard | DNA |
| 2.6.1958 | Roskilde Ring [S1.5] | | #202 | Peter Ross | | 4th |
| 2.6.1958 | Roskilde Ring [S1.5] | | | Christopher Martyn | | 3rd |
| 2.6.1958 | Roskilde Ring [S1.5] | | #316 | Douglas Graham | | 2nd |
| 2.6.1958 | Roskilde Ring [S1.5] | | #506 | Mike Taylor | | 1st |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 5 | #200 | Ralph Walker | Ralph Walker | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 9 | #271 | John Mitchell | John Mitchell | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 19 | | James van Sickle | James van Sickle | 5th |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 29 | #337 | Colin Escott | Colin Escott | 2nd |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 31 | #313 | Jim Mackay | Jimmy Mackay | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 52 | | Barry Harpin | Barry Harpin | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 54 | #159 | Andy Walker | Andy Walker | DNA |
| 7.6.1958 | LCCC Oulton Park [S2.7/S+2.7] | 66 | #321 | Nicholas Green | Nicholas Green | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 94 | #176? | Bob Staples | Ecurie Gnuts | 4th |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 127 | #203 | A. J. Korczynski | A. J. Korczyinski | DNA |
| 7.6.1958 | LCCC Oulton Park [1172F/750F] | 131 | #287 | Ralph Walker | Ralph Walker | 6th |