| 20.4.1958 | SCCA Regional Galveston [BP+CP+DP+EP] | 7 | Ace | Bill Steele | | 2nd |
| 20.4.1958 | SCCA National Marlboro [BM+CM+DM+EM+FM] | 18 | | Chuck Sarle | | 10th |
| 20.4.1958 | BRSCC Brands Hatch [Production] | 56 | Ace | Ian Smith | | 3rd |
| 20.4.1958 | SCCA National Marlboro [EP+GM] | 77 | | Graham Shaw | | 5th |
| 20.4.1958 | SCCA National Marlboro [EP+GM] | 139 | | Fred Fuller | | DNF |
| 20.4.1958 | SCCA National Marlboro [EP+GM] | 175 | Ace | Ed Welch | | 3rd |
| 20.4.1958 | SCCA Regional Galveston [BP+CP+DP+EP] | | Ace | Bob Walker | | DNA |
| 20.4.1958 | BRSCC Brands Hatch [Production] | | Ace | Herbert Jones | | 2nd |
| 27.4.1958 | SCCA Regional Lime Rock [DP+EP] | 4 | | John Willock | | DNA |
| 27.4.1958 | SCCA Regional Lime Rock [DP+EP] | 47 | Ace | Evelyn Mull | | 8th |
| 27.4.1958 | SCCA Regional Lime Rock [DP+EP] | 48 | Ace | John B. Mull | | DNA |
| 27.4.1958 | Dunnellon [Main] | 88 | | | David Lane | raced |
| 27.4.1958 | BARC Goodwood [PS?] | 95 | Ace | Ian Smith | | raced |
| 27.4.1958 | SCCA Regional Lime Rock [DP+EP] | 140 | Ace | Anthony Zuckert | | 3rd |
| 27.4.1958 | SCCA Regional Lime Rock [DP+EP] | 147 | Ace | Harry Carter | | 1st |
| 27.4.1958 | SCCA Regional Lime Rock [DP+EP] | 156 | | Bob Klingensmith | | 5th |
| 27.4.1958 | SCCA Regional Lime Rock [DP+EP] | 246 | Ace | Jordan King | | 2nd |
| 27.4.1958 | Dunnellon [Main] | | | Ed Rable | | 4th |
| 27.4.1958 | Dunnellon [Main] | | Ace | Duncan Forlong | | 3rd |
| 27.4.1958 | Dunnellon [Main] | | | Bill Dunn | | 6th |
| 27.4.1958 | Dunnellon [Main] | | Ace | Jim Hunt | | 5th |
| 27.4.1958 | Preliminary Louisville [EP+FP Porsche] | | | Pick | | 1st |
| 27.4.1958 | SCCA Regional Louisville [BP+CP+DP+EP+FP Porsche] | | | Pick | | ?th |
| 27.4.1958 | Preliminary Louisville [EP+FP Porsche] | | | May | | 3rd |
| 27.4.1958 | Preliminary Dunnellon [race 2] | | | Ed Rable | | 3rd |
| 27.4.1958 | Preliminary Dunnellon [race 2] | | Ace | Duncan Forlong | | 1st |
| 27.4.1958 | Preliminary Dunnellon [race 2] | | | | | 5th |
| 27.4.1958 | Preliminary Dunnellon [race 2] | | | | | 4th |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 14 | Ace | Anthony Zuckert | | DNA |
| 4.5.1958 | Preliminary Virginia [DP+EP+GM] | 14 | Ace | Anthony Zuckert | | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 18 | | Chuck Sarle | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 18 | | Chuck Sarle | | DNA |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 19 | Ace | Arch Means | | DNA |
| 4.5.1958 | Preliminary Virginia [DP+EP+GM] | 19 | Ace | Arch Means | | DNA |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 20 | | Ross Wees | | 2nd |
| 4.5.1958 | Preliminary Virginia [DP+EP+GM] | 20 | | Ross Wees | | DNA |
| 4.5.1958 | Preliminary Virginia [DP+EP+GM] | 47 | Ace | Evelyn Mull | | DNA |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 47 | Ace | Evelyn Mull | | raced |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 48 | Ace | John B. Mull | | DNA |
| 4.5.1958 | Preliminary Virginia [DP+EP+GM] | 48 | Ace | John B. Mull | | DNA |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 77 | Ace | Graham Shaw | | raced |
| 4.5.1958 | Preliminary Virginia [DP+EP+GM] | 77 | | Graham Shaw | | DNA |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 80 | Ace | Harry Carter | | DNA |
| 4.5.1958 | Preliminary Virginia [DP+EP+GM] | 80 | Ace | Harry Carter | | DNA |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | 175 | Ace | George Ragsdale | | DNA |
| 4.5.1958 | Preliminary Virginia [DP+EP+GM] | 175 | Ace | George Ragsdale | | DNA |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | | Ace | Ed Welch | | 3rd |
| 4.5.1958 | SCCA National Virginia [DP+EP+FP+GP+HP+KP+GM+HM] | | Ace | Lonnie Rix | | DNF |
| 4.5.1958 | Preliminary Virginia [DP+EP+GM] | | Ace | Ed Welch | | 3rd |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 17 | | John Luce | Edith Field | 7th |
| 10.5.1958 | Novice Tracy [Production +1.6] | 17 | | John Luce | Edith Field | 1st |
| 10.5.1958 | 4 h Relay Harewood Acres | 26C | Ace | Hubert McPhail | The Klinkers | 15th |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 61 | | Earl Grafton | Earl D. Grafton | ?th |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 117 | Ace | Chick Leson | Chick Leson | DNA |
| 11.5.1958 | Hawaii [S+1.6] | 4 | | C. Allen | | 11th |
| 11.5.1958 | Hawaii [Match] | 4 | | C. Allen | | 5th |
| 11.5.1958 | Hawaii [Locals] | 4 | | C. Allen | | 7th |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 17 | | John Fox | Edith Field | 13th |
| 11.5.1958 | Hawaii [S+1.6] | 38 | Ace | Bill Love | William Donnenfizer | 6th |
| 11.5.1958 | Hawaii [Production +1.6] | 38 | Ace | Bill Love | William Donnenfizer | 2nd |
| 11.5.1958 | Hawaii [Match] | 38 | Ace | Bill Love | William Donnenfizer | 1st |
| 11.5.1958 | Hawaii [Production +1.6] | 42 | | Ruben H. Cirlacks | Ruben H. Cirlacks | DNA |
| 11.5.1958 | Hawaii [S+1.6] | 42 | | Ruben H. Cirlacks | Ruben H. Cirlacks | DNA |
| 11.5.1958 | Hawaii [Match] | 42 | | Ruben H. Cirlacks | Ruben H. Cirlacks | DNA |
| 11.5.1958 | Hawaii [Production +1.6] | 48 | Ace | Gordon Crowder | Gordon Crowder | 4th |
| 11.5.1958 | Hawaii [S+1.6] | 48 | Ace | Gordon Crowder | Gordon Crowder | 18th |
| 11.5.1958 | Hawaii [Match] | 48 | Ace | Gordon Crowder | Gordon Crowder | 3rd |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 61 | | Earl Grafton | Earl D. Grafton | DNA |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 117 | Ace | Chick Leson | Chick Leson | DNA |
| 11.5.1958 | Hawaii [S+1.6] | 195 | Ace | Paul Cote | Paul Cote | DNF |
| 11.5.1958 | Hawaii [Production +1.6] | 195 | Ace | Paul Cote | Paul Cote | 3rd |
| 11.5.1958 | Hawaii [Match] | 195 | Ace | Paul Cote | Paul Cote | 2nd |
| 15.5.1958 | Aspern [GT+1.6] | 52 | Ace | Charles Vögele | Charles Voegele | raced |
| 18.5.1958 | SCCA National Cumberland [BM+CM+DM] | 18 | | Chuck Sarle | Charles R. Sarle | DNA |
| 18.5.1958 | GP Spa [GT2.0] | 25 | Ace | Mike Anthony | Rudd Racing Team | 1st |
| 18.5.1958 | GP Spa [GT2.0] | 26 | Ace | Liekens | Equipe Nationale Belge | ?th |
| 18.5.1958 | GP Spa [GT2.0] | 27 | Ace | Ted Whiteaway | Rudd Racing Team | 2nd |
| 18.5.1958 | GP Spa [GT2.0] | 37 | Ace | Herb Jones | | 4th |
| 18.5.1958 | Preliminary Cumberland [Ladies] | 40 | Ace | Margaret Milo | Richard A. Milo | DNA |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | 40 | Ace | Richard Milo | Richard A. Milo | DNA |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | 47 | Ace | John B. Mull | John Barnes Mull | DNA |
| 18.5.1958 | Preliminary Cumberland [Ladies] | 48 | Ace | Evelyn Mull | John Barnes Mull | DNA |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | 48 | Ace | Evelyn Mull | John Barnes Mull | DNA |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | 77 | | James Graham | James Graham | DNA |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | 102 | Ace | Sam Moses | Sam Moses | DNA |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | 175 | Ace | Ed Welch | George H. Ragsdale | 3rd |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | 246 | Ace | Jordan King | Jordan L. King | 2nd |
| 18.5.1958 | SCCA National Cumberland [DP+EP] | | Ace | Ross Wees | | 1st |
| 24.5.1958 | BRSCC Full Sutton [PS] | 64 | Ace | Ian Smith | | 1st |
| 25.5.1958 | GP des Frontières [GT2.0+TS1.0] | | Ace | André Liekens | | 3rd |
| 26.5.1958 | Autosport Mallory Park [PS+1.6/PS1.0] | 45 | Ace | Tom Cunane | T. G. Cunane | DNA |
| 26.5.1958 | Autosport Mallory Park [PS+1.6/PS1.0] | 46 | Ace | D. Levy | Rudd Racing | DNA |
| 26.5.1958 | Autosport Mallory Park [PS+1.6/PS1.0] | 50 | Ace | Ian Smith | Team Triple 'S' | DNA |
| 26.5.1958 | NSCC Mallory Park [S+1.5] | 54 | Aceca | Ron Brightman | R. A. Brightman | DNA |
| 26.5.1958 | Autosport Mallory Park [PS+1.6/PS1.0] | 54 | Aceca | Ron Brightman | R. A. Brightman | DNA |
| 31.5.1958 | Preliminary La Junta [Production+HM] | 5 | Ace | Harvey Woodward | | 5th |
| 31.5.1958 | Preliminary Santa Barbara [DP+EP] | 38 | Ace | Bill Love | Bill Love | 1st |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 38 | Ace | Linda Scott | Bill Love | DNA |
| 31.5.1958 | Novice Dunkirk [EP+FP+GP] | 137 | Ace | Margaret Milo | | 15th |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 195 | Ace | Cathy Cote | Paul Cote | DNA |