| 21.6.1958 | ADMC Crimond [Production Handicap] | 14 | Aceca | Gray Mickel | R. G. Mickel | DNA |
| 22.6.1958 | SCCA National Road America [CP+DP+EP] | 5 | Ace | Harvey Woodward | Harvey D. Woodward | 6th |
| 22.6.1958 | SCCA National Road America [CP+DP+EP] | 7 | Ace | Bill Steele | W. E. Steele | 2nd |
| 22.6.1958 | SCCA National Road America [CP+DP+EP] | 11 | Ace | Robert Roloson | Robert M. Roloson | 7th |
| 22.6.1958 | SCCA National Road America [BM+CM+DM+BP] | 18 | | Chuck Sarle | Charles R. Sarle | DNA |
| 22.6.1958 | SCCA National Road America [CP+DP+EP] | 21 | Ace | Don Zeek | Don Zeek | 3rd |
| 22.6.1958 | 24 h Le Mans | 27 | Ace | Patthey / Berger | A.C. Cars Ltd. | 9th |
| 22.6.1958 | 24 h Le Mans | 28 | Ace LM | Bolton / Stoop | A.C. Cars Ltd. | 8th |
| 22.6.1958 | SCCA National Road America [CP+DP+EP] | 74 | Ace | Dick Hogue | Richard P. Hogue | 10th |
| 22.6.1958 | SCCA National Road America [CP+DP+EP] | 99 | Ace | Harry Pick | Harry E. Pick | 4th |
| 22.6.1958 | Vallelunga [GT2.6] | | | Charles Vögele | | 5th |
| 26.6.1958 | Preliminary Watkins Glen [Ladies] | 148 | Ace | Evelyn Mull | John B. Mull | 2nd |
| 27.6.1958 | SCCA Regional Watkins Glen [DP+EP+HM+FIII] | 33 | Ace | Ed Hamburger | Edmund Hamburger | 6th |
| 27.6.1958 | SCCA Regional Watkins Glen [DP+EP+HM+FIII] | 47 | Ace | John B. Mull | John B. Mull | DNA |
| 27.6.1958 | SCCA Regional Watkins Glen [DP+EP+HM+FIII] | 81 | Ace | Arch Means | | 2nd |
| 27.6.1958 | SCCA Regional Watkins Glen [DP+EP+HM+FIII] | 100 | Aceca | R. C. Kyle | R. C. Kyle | DNA |
| 27.6.1958 | SCCA Regional Watkins Glen [DP+EP+HM+FIII] | 101 | | Pete Harrison | Pete Harrison | 3rd |
| 27.6.1958 | SCCA Regional Watkins Glen [DP+EP+HM+FIII] | 148 | Ace | Evelyn Mull | John B. Mull | 1st |
| 28.6.1958 | Preliminary Riverside [BP+CP+DP+EP] | 38 | Ace | Bill Love | | ?th |
| 28.6.1958 | Preliminary Riverside [Ladies] | | Ace | Cathy Cote | | ?th |
| 29.6.1958 | Riverside [BP+CP+DP+EP] | 17 | | Jim Fouch | | 14th |
| 29.6.1958 | Riverside [BP+CP+DP+EP] | 38 | Ace | Bill Love | | 6th |
| 29.6.1958 | Riverside [BP+CP+DP+EP] | 147 | | Bill Klingensmith | | DNF |
| 29.6.1958 | Riverside [BP+CP+DP+EP] | 195 | Ace | Paul Cote | | DNF |
| 29.6.1958 | Autosport Snetterton [PS+1.6] | | Aceca | Ron Brightman | | raced |
| 29.6.1958 | Autosport Snetterton [PS+1.6] | | Ace | Don Levy | | 5th |
| 29.6.1958 | St. Eugene [S+1.6] | | Ace | Don Hogan | | DNA |
| 29.6.1958 | Autosport Snetterton [PS+1.6] | | Ace | John McKechnie | | raced |
| 5.7.1958 | SCCA National Lime Rock [EP] | 1 | | David Zabludoff | | 7th |
| 5.7.1958 | LASC Green Acres [Formula Libre] | 17 | Ace | Paul Sullivan | P. J. Sullivan | DNA |
| 5.7.1958 | LASC Green Acres [S2.7] | 17 | Ace | Paul Sullivan | P. J. Sullivan | 4th |
| 5.7.1958 | SCCA National Lime Rock [EP] | 48 | Ace | Evelyn Mull | | 3rd |
| 5.7.1958 | 12 h Reims | 58 | Ace | Jones / Anthony | | 13th |
| 5.7.1958 | LASC Green Acres [Formula Libre] | 117 | Ace | Peter Eastick | McColl Motors | DNA |
| 5.7.1958 | LASC Green Acres [S2.7] | 117 | Ace | Peter Eastick | McColl Motors | DNA |
| 5.7.1958 | SCCA National Lime Rock [EP] | 180 | Ace | Harry Carter | | 1st |
| 5.7.1958 | Preliminary Vaca Valley [TR+Morgan+AH+Veloce+Super] | 193 | Ace | Paul Cote | Paul Cote | DNA |
| 5.7.1958 | SCCA National Lime Rock [EP] | 246 | Ace | Jordan King | | 2nd |
| 5.7.1958 | 12 h Reims | | Ace | Whiteaway / Jennings | | ?th |
| 5.7.1958 | 12 h Reims | | Ace | Izquierdo / Kemp | | ?th |
| 5.7.1958 | 12 h Reims | | | Clarke / Sunley | | 14th |
| 6.7.1958 | BMRC Charterhall [BMRC Trophy Handicap] | 5 | Aceca | Gray Mickel | R. G. Mickel | raced |
| 6.7.1958 | SCCA Regional Vaca Valley [BP+CP+DP+EP] | 104 | | Earl Grafton | Earl Grafton | DNA |
| 6.7.1958 | Preliminary Vaca Valley [300SL+Jag+Bristol+Corv+Carrera+AHS] | 104 | | Earl Grafton | Earl Grafton | DNA |
| 6.7.1958 | SCCA Regional Vaca Valley [BP+CP+DP+EP] | 117 | Ace | Chick Leson | Chick Leson | 6th |
| 6.7.1958 | Preliminary Vaca Valley [300SL+Jag+Bristol+Corv+Carrera+AHS] | 117 | Ace | Chick Leson | Chick Leson | DNA |
| 6.7.1958 | SCCA Regional Vaca Valley [BP+CP+DP+EP] | 193 | Ace | Paul Cote | Paul Cote | 13th |
| 6.7.1958 | Preliminary Vaca Valley [Ladies+Sedan+FIII+MG-T] | 193 | Ace | Cathy Cote | Paul Cote, Jr. | DNA |
| 6.7.1958 | Hammond [DP+EP+FP] | | Ace | Harry Washburn | | 1st |
| 6.7.1958 | Hammond [Main] | | Ace | Harry Washburn | | 7th |
| 6.7.1958 | Hammond [DP+EP+FP] | | Ace | J. E. Rose | | 2nd |
| 6.7.1958 | Hammond [DP+EP+FP] | | Ace | J. Young | | DQ |
| 12.7.1958 | BRSCC Full Sutton [GT] | 56 | Ace | Ian Smith | | 1st |
| 12.7.1958 | Leinster Trophy | | | Bill Bradshaw | | 4th |
| 13.7.1958 | LISCA Lime Rock [EP] | | Ace | Jordan King | | 1st |
| 13.7.1958 | Traverse City [Main] | | Ace | Dick Hogue | | ?th |
| 19.7.1958 | Berwick [DP+EP] | | | Sam Moses | | 1st |
| 19.7.1958 | BEMC Harewood Acres [Modified +1.5] | | Ace | Paul Sullivan | Paul J. Sullivan | ?th |
| 19.7.1958 | BEMC Harewood Acres [Production 3.0] | | Ace | Paul Sullivan | Paul J. Sullivan | ?th |
| 20.7.1958 | SCCA Regional Thompson [Production] | 30 | | Ed Hamberger | | raced |
| 20.7.1958 | SCCA Regional Thompson [DP+EP] | 30 | | Ed Hamburger | | 1st |
| 20.7.1958 | SCCA Regional Thompson [DP+EP] | 47 | Ace | John B. Mull | | DNF |
| 20.7.1958 | SCCA Regional Thompson [DP+EP] | 48 | Ace | Evelyn Mull | | DNF |
| 26.7.1958 | MCMC Oulton Park [Closed] | 18 | Aceca | Ron Brightman | R. A. Brightman | 1st |
| 27.7.1958 | Trophée d'Auvergne | 56 | Ace | Ted Whiteaway | | 13th |
| 27.7.1958 | Trophée d'Auvergne | 60 | Ace | Mike Anthony | | 16th |
| 27.7.1958 | Trophée d'Auvergne | 118 | | Antonio Izquierdo | | ?th |
| 27.7.1958 | Trophée d'Auvergne | 120 | | Jean Gretener | | DNA |
| 27.7.1958 | Autosport Snetterton [Production] | | | | | raced |
| 3.8.1958 | SCCA Regional Minden [BP+CP+DP+EP] | 17 | | John Luce | Edith Field | 7th |
| 3.8.1958 | SCCA Regional Shelton [PS+1.5] | 18 | | Vern Clausing | | DNA |
| 3.8.1958 | SCCA Regional Minden [BP+CP+DP+EP] | 117 | Ace | Chick Leson | Chick Leson | DNA |
| 3.8.1958 | SCCA Regional Shelton [PS+1.5] | 129 | Ace | Al Doyan | | DNA |
| 4.8.1958 | Autosport Mallory Park [PS+1.0] | 71 | Aceca | Ron Brightman | R. A. Brightman | 4th |
| 4.8.1958 | Autosport Brands Hatch [Production] | 104 | Ace | Bob Jennings | | raced |
| 4.8.1958 | Autosport Brands Hatch [Production] | | Ace | Herbert Jones | | DNA |
| 4.8.1958 | Autosport Brands Hatch [Production] | | Ace | Fred Warnell | F. Warnell | DNA |
| 4.8.1958 | Autosport Brands Hatch [Production] | | Ace | John McKechnie | | DNA |
| 16.8.1958 | SCCA National Milwaukee [BP+CP+DP+EP] | 21 | Ace | Luke Stear | | 6th |
| 16.8.1958 | Harewood Acres [Le Mans] | 47 | Ace | Bill Hough | Ecurie Sans Sous | DNA |
| 16.8.1958 | Harewood Acres [EP] | 47 | Ace | Bill Hough | Ecurie Sans Sous | raced |
| 16.8.1958 | SCCA National Milwaukee [BP+CP+DP+EP] | 56 | Ace | Robert Roloson | | DNF |
| 16.8.1958 | SCCA National Milwaukee [BP+CP+DP+EP] | 74 | Ace | Dick Hogue | | 9th |
| 16.8.1958 | SCCA National Milwaukee [BP+CP+DP+EP] | 99 | Ace | Harry Pick | | 7th |
| 16.8.1958 | SCCA National Milwaukee [BP+CP+DP+EP] | 144 | Ace | Burt DeRieux | | DNF |
| 16.8.1958 | SCCA National Milwaukee [BP+CP+DP+EP] | 157 | Ace | Marvin Mann | | 13th |
| 17.8.1958 | SCCA National Montgomery [BM+CM+DM+EM] | 78 | | Chuck Sarle | | DNF |
| 17.8.1958 | Zeltweg [GT+1.3] | 86 | Ace | Charles Vögele | Charles Vögele | raced |
| 17.8.1958 | SCCA National Montgomery [DP+EP] | 130 | | Ed Hamburger | | 4th |
| 17.8.1958 | SCCA National Montgomery [DP+EP] | 180 | Ace | Harry Carter | | 2nd |
| 17.8.1958 | SCCA National Montgomery [DP+EP] | 246 | Ace | Jordan King | | 1st |
| 23.8.1958 | LASC Green Acres [Unrestricted] | 11 | Ace | Paul Sullivan | P. T. Sullivan | DNA |
| 23.8.1958 | LASC Green Acres [S2.0] | 11 | Ace | Paul Sullivan | P. T. Sullivan | DNA |
| 23.8.1958 | LASC Green Acres [S2.0] | 30 | Ace | Bill Hough | Ecurie San Sous | DNA |
| 23.8.1958 | LASC Green Acres [Unrestricted] | 30 | Ace | Bill Hough | Ecurie San Sous | DNA |
| 23.8.1958 | LASC Green Acres [Le Mans] | 30 | Ace | Bill Hough | Ecurie San Sous | DNA |
| 23.8.1958 | LASC Green Acres [Unrestricted] | 117 | Ace | Peter Eastick | McColl Motors Ltd. | DNA |
| 23.8.1958 | LASC Green Acres [S2.0] | 117 | Ace | Peter Eastick | McColl Motors Ltd. | DNA |
| 24.8.1958 | Hourglass Field [S+1.5] | | | Jim Fouch | | 5th |
| 30.8.1958 | Preliminary Santa Barbara [Ladies] | | | Linda Scott | | 2nd |