| 2.3.1958 | SCCA Regional Phoenix [Main] | 318 | 550 | Gary Nelson | | DNS |
| 9.3.1958 | Preliminary Boca Raton [FP+GP+HP+KP+HM] | 1 | 356 1600 Super | Jean Speidel | | 4th |
| 9.3.1958 | SCCA Regional Boca Raton [FP+GP+HP+KP+HM] | 1 | 356 1600 Super | Jean Speidel | | 5th |
| 9.3.1958 | Preliminary Boca Raton [FP+GP+HP+KP+HM] | 7 | 356 A Carrera Speedster | Howard Fowler | | 2nd |
| 9.3.1958 | SCCA Regional Boca Raton [FP+GP+HP+KP+HM] | 7 | 356 A Carrera Speedster | Howard Fowler | | 1st |
| 9.3.1958 | SCCA Regional Boca Raton [FP+GP+HP+KP+HM] | 11 | 356 1600 Super | Jack Ryan | Buell Kinne | 3rd |
| 9.3.1958 | Preliminary Boca Raton [FP+GP+HP+KP+HM] | 11 | 356 1600 Super | Jack Ryan | Buell Kinne | raced |
| 9.3.1958 | Preliminary Mansfield [DP+EP+FP] | 23 | 356 1600 Super | Bill Hughes | | 12th |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 23 | 356 | Bill Hughes | | 9th |
| 9.3.1958 | SCCA Regional Boca Raton [FP+GP+HP+KP+HM] | 29 | 356 1600 Super | Jim Bennett | | 4th |
| 9.3.1958 | Preliminary Boca Raton [FP+GP+HP+KP+HM] | 29 | 356 1600 Super | Jim Bennett | | raced |
| 9.3.1958 | SCCA Regional Boca Raton [FP+GP+HP+KP+HM] | 38 | 356 | R. E. Ruechel | | raced |
| 9.3.1958 | Preliminary Boca Raton [FP+GP+HP+KP+HM] | 38 | 356 | R. E. Ruechel | | raced |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 41 | 356 | Eddie Cordaro | | 12th |
| 9.3.1958 | Preliminary Mansfield [DP+EP+FP] | 41 | 356 | Eddie Cordaro | | 16th |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 47 | 356 | J. Rusty Wright | | 6th |
| 9.3.1958 | Preliminary Mansfield [DP+EP+FP] | 47 | 356 | J. Rusty Wright | | 6th |
| 9.3.1958 | Preliminary Boca Raton [FP+GP+HP+KP+HM] | 60 | 356 | Chuck Cassel | | raced |
| 9.3.1958 | SCCA Regional Boca Raton [FP+GP+HP+KP+HM] | 60 | 356 | Chuck Cassel | | raced |
| 9.3.1958 | Preliminary Mansfield [DP+EP+FP] | 71 | 356 | Carlos Schuessler | | 15th |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 71 | 356 | Carlos Schuessler | | 11th |
| 9.3.1958 | SCCA Regional Boca Raton [FP+GP+HP+KP+HM] | 83 | 356 A Carrera Speedster | John Cuevas | | DNF |
| 9.3.1958 | Preliminary Boca Raton [FP+GP+HP+KP+HM] | 83 | 356 A Carrera Speedster | John Cuevas | | 1st |
| 9.3.1958 | SCCA Regional Boca Raton [FP+GP+HP+KP+HM] | 84 | 356 | Joyce Cuevas | | raced |
| 9.3.1958 | Preliminary Boca Raton [FP+GP+HP+KP+HM] | 84 | 356 | Joyce Cuevas | | raced |
| 9.3.1958 | Preliminary Boca Raton [FP+GP+HP+KP+HM] | 114 | 356 | Don Holton | | raced |
| 9.3.1958 | SCCA Regional Boca Raton [FP+GP+HP+KP+HM] | 114 | 356 | Don Holton | | raced |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 117 | 356 | Emory Cantey | | 15th |
| 9.3.1958 | Preliminary Mansfield [DP+EP+FP] | 117 | 356 | Emory Cantey | | 21st |
| 9.3.1958 | Preliminary Boca Raton [CM+DM+EM+FM+GM] | 183 | 550 RS | John Cuevas | | 4th |
| 9.3.1958 | SCCA Regional Boca Raton [CM+DM+EM+FM+GM+BP+CP+DP] | 183 | 550 RS | John Cuevas | | ?th |
| 9.3.1958 | Preliminary Mansfield [DP+EP+FP] | 444 | 356 | Claude Woolfolk | | 19th |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 444 | 356 | Claude Woolfolk | | 14th |
| 22.3.1958 | 12 h Sebring | 41 | 550 RS | Schell / Seidel | Porsche K.G. | 3rd |
| 22.3.1958 | 12 h Sebring | 42 | 718 RSK | Behra / Barth | Porsche K.G. | DNF |
| 22.3.1958 | 12 h Sebring | 43 | 356 A 1500 GS Carrera GT Coupé | von Hanstein / Linge / Cuevas | Porsche K.G. | 10th |
| 22.3.1958 | 12 h Sebring | 44 | 550 RS | Bunker / de Beaufort | Art's Sports Motors | DNF |
| 22.3.1958 | 12 h Sebring | 45 | 550 RS | Miles / Kunstle | Jean-Pierre Kunstle | DNF |
| 22.3.1958 | 12 h Sebring | 46 | 550 RS | Wallace / Holbert / Hudson | Marshall Motors | 25th |
| 22.3.1958 | 12 h Sebring | 74 | 550 RS | Scott / Bott | Norman J. Scott Jr. | 39th |
| 22.3.1958 | 12 h Sebring | 75 | 550 RS | Underwood / Cunningham / Boss | Alfred Momo | DNS |
| 22.3.1958 | Preliminary Stockton [Sedan+Ladies+MG+FIII] | 119 | | Pamelia Mace | | - |
| 23.3.1958 | SCCA Regional Stockton [S1.5] | 12 | 550 RS | Eldon Beagle | | 1st |
| 23.3.1958 | SCCA Regional Stockton [S+1.5] | 12 | 550 RS | Eldon Beagle | | 1st |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | 20 | 356 A Carrera GT | Don Dickey | | 1st |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | 26 | 356 Super | Bob Herda | | 7th |
| 23.3.1958 | Preliminary Stockton [Novice Production 1.6] | 27 | 356 Super | Leon Robertson | | 9th |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | 70 | 356 A Carrera | Fred Block | | 19th |
| 23.3.1958 | Preliminary Stockton [Novice Production 1.6] | 96 | 356 Super | Robert Peck | | 4th |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | 102 | 356 Super | Jack Woodard | | 8th |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | 107 | 356 1600 | Charles Kuhn | | 17th |
| 23.3.1958 | Preliminary Stockton [Novice Production 1.6] | 107 | 356 1600 | Charles Kuhn | | 8th |
| 23.3.1958 | Preliminary Stockton [Novice Sports] | 129 | Special | Dave Skilling | | 7th |
| 23.3.1958 | Preliminary Stockton [Novice Sports] | 134 | 356 | John France | | 11th |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | 136 | 356 Super | Emil Pardee | | 3rd |
| 23.3.1958 | Preliminary Stockton [Novice Sports] | 141 | 550 | Jack West | | 12th |
| 23.3.1958 | SCCA Regional Stockton [S1.5] | 141 | 550 | Chick Leson | | 6th |
| 23.3.1958 | Preliminary Stockton [Novice Production 1.6] | 162 | 356 1600 | Bill Minor | | 12th |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | 170 | 356 A Carrera | Ed Vincent | | 2nd |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | 175 | 356 | George Grinzewitsch | | 4th |
| 23.3.1958 | Preliminary Stockton [Novice Production 1.6] | 175 | 356 Super | George Grinzewitsch | | 2nd |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | 177 | 356 A Carrera | Dan Herman | | 10th |
| 23.3.1958 | SCCA Regional Stockton [S1.5] | 188 | 550 | Jack McAfee | | DNF |
| 23.3.1958 | Preliminary Stockton [Novice Sports] | 188 | 550 | Vaclav Polak | | 14th |
| 23.3.1958 | Preliminary Stockton [Novice Sports] | 189 | | William Moriang | | 16th |
| 23.3.1958 | SCCA Regional Stockton [S+1.5] | 212 | 550 | Erv Lehr | | 3rd |
| 23.3.1958 | Preliminary Stockton [Novice Sports] | 212 | 550 | Erv Lehr | | 4th |
| 23.3.1958 | SCCA Regional Stockton [S1.5] | 212 | 550 | Erv Lehr | | 2nd |
| 23.3.1958 | SCCA Regional Stockton [Production 1.6] | | 356 A Carrera GT | Barneson | | DNA |
| 5.4.1958 | BRSCC Full Sutton [PS] | 64 | 356 A 1600 Super | Jim Clark | Border Reivers | 6th |
| 7.4.1958 | 3 h Pau [GT2.0] | | 356 | José Behra | | ?th |
| 7.4.1958 | 3 h Pau [GT2.0] | | 356 | Bléhaut | | ?th |
| 7.4.1958 | 3 h Pau [GT2.0] | | 356 | Michel Slotine | | ?th |
| 7.4.1958 | 3 h Pau [GT2.0] | | | Storez | | DNF |
| 7.4.1958 | 3 h Pau [GT2.0] | | | Buchet | | DNF |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 10 | 356 A 1500 GS Carrera | Don Dickey | Donald Dickey | 1st |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 19 | 356 A 1500 GS Carrera GT Speedster | D. D. Michelmore | D. D. Michelmore | DNF |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 22 | 550 | John Peters | John Peters | 10th |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 26 | 356 Speedster | William Kluck | Chester Kluck | 8th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 29 | 550 RS Spyder | Joe Playan | Joe Playan | 3rd |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 36 | 356 1600 Super Speedster | Emil Pardee | Emil Pardee | 6th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 40 | 550 | Robert Kirby | Robert Kirby | 13th |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 72 | 356 A 1500 GS Carrera GT Speedster | Jimmy Moore | Jimmy Moore | 2nd |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 88 | 550 RS | Jack McAfee | Stan Sugarman | 1st |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 91 | 356 A 1500 GS Carrera GT | Roger Mace | Roger Mace | 5th |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 107 | 356 Speedster | Charles Kuhn | Charles Kuhn | 14th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 112 | 550 RS | Eldon Beagle | Eldon Beagle | 6th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 118 | 550 RS | Jean Pierre Kunstle | Jean-Pierre Kunstle | DNF |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 141 | 550 | Jack West | Jack West | 19th |
| 13.4.1958 | Preliminary Palm Springs [Ladies+FIII] | 150 | 356 | Virginia Wachel | | 9th |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 155 | 356 Coupé | Peter Talbot | Peter Talbot | 10th |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 170 | 356 A 1500 GS Carrera | Ed Vincent | Ed Vincent | 3rd |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 177 | 356 A 1500 GS Carrera | Richard Bellows | Richard Bellows | 4th |
| 13.4.1958 | SCCA Regional Palm Springs [FP+GP+KP] | 270 | 356 A 1500 GS Carrera | Fred Block | Fred Block | DNS |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 288 | 550 | Stan Sugarman | | DNS |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 318 | 550 | Gary Nelson | Gary Nelson | 11th |
| 13.4.1958 | Coupes de Vitesse [GT] | | 356 | José Behra | | 4th |
| 13.4.1958 | GP Avandaro | | 550 RS | Ken Miles | | 2nd |
| 13.4.1958 | Coupes de Vitesse [S2.0] | | | Heinz Schiller | | 2nd |
| 13.4.1958 | Coupes de Vitesse [S2.0] | | 550 | Pierre Houdusse | | 3rd |