| 8.6.1958 | SCCA Regional Thompson [BM+CM+EM+FM] | 59 | MT4 TN 1500 Morelli Spyder | John Milos | | DNA |
| 8.6.1958 | SCCA Regional Thompson [BM+CM+EM+FM] | 63 | MT4 Special | Jim Pauley | | DNA |
| 8.6.1958 | 3 h Rouen | | S 750 | Jean Laroche | Jean Laroche | 11th |
| 8.6.1958 | 3 h Rouen | | S 750 | Haskell / de Tomaso | Alessandro De Tomaso | 8th |
| 8.6.1958 | 3 h Rouen | | MT4 1350 | Zéphirin Miani | Zephirin Miani | 13th |
| 8.6.1958 | 3 h Rouen | | MT4 1500 | "Rety" | | DNF |
| 8.6.1958 | 3 h Rouen | | F2/S 1500 | Alessandro de Tomaso | Alessandro De Tomaso | DNF |
| 8.6.1958 | 3 h Rouen | | MT4 1500 | Pignard | | DNF |
| 22.6.1958 | Circuito di Caserta [S1.1] | 8 | S 1100 | Ludovico Scarfiotti | | 1st |
| 22.6.1958 | Circuito di Caserta [S1.1] | 14 | S 1100 | Roberto Bussinello | | DNF |
| 22.6.1958 | Circuito di Caserta [S1.1] | 24 | MT4 1100 | Giuseppe Rossi | | 2nd |
| 22.6.1958 | 24 h Le Mans | 41 | S 750 | Laroche / Radix | Automobili Osca | 14th |
| 22.6.1958 | 24 h Le Mans | 42 | S 750 | de Tomaso / Davis | Automobili Osca | 11th |
| 22.6.1958 | Vallelunga [S750] | 104 | S 750 | Sesto Leonardi | | 1st |
| 22.6.1958 | Vallelunga [S750] | 118 | S 750 | Giancarlo Rigamonti | | 2nd |
| 22.6.1958 | Vallelunga [S750] | 130 | S 750 | Gianni Brichetti | | 4th |
| 22.6.1958 | Circuito di Caserta [S1.1] | | MT4 1100 | Fiordelisi | | 4th |
| 22.6.1958 | Circuito di Caserta [S1.1] | | MT4 1100 | Carlo Falli | | 3rd |
| 22.6.1958 | Circuito di Caserta [S2.0] | | F2/S 1500 | Giulio Cabianca | | 1st |
| 22.6.1958 | Circuito di Caserta [S2.0] | | MT4 1500 | Domenico Lo Coco | | 8th |
| 22.6.1958 | Circuito di Caserta [S2.0] | | FS 1500 | Luigi Piotti | | 6th |
| 27.6.1958 | SCCA Regional Watkins Glen [BM+CM+DM+EM+FM+GM] | 35 | MT4 TN 1500 Morelli Spyder | John Milos | | 7th |
| 28.6.1958 | Preliminary Riverside [Modified 1.5] | 119 | MT4 1500 | Robert Plass | | raced |
| 29.6.1958 | Riverside [FM+GM+HM] | 119 | MT4 1500 | Robert Plass | | DNS |
| 4.7.1958 | Orange County [S1.5] | 77 | TN 1500 | Bill Leyden | | 1st |
| 5.7.1958 | SCCA National Lime Rock [CM+DM+EM+FM] | 147 | MT4 TN 1500 Morelli Spyder | Hal Stetson | | 10th |
| 13.7.1958 | Vila Real | 18 | TN 1500 | José A. Nogueira Pinto | Scuderia Centro-Sud | 7th |
| 19.7.1958 | BEMC Harewood Acres [Modified +1.5] | | MT4 Special | Jim Pauley | James E. Pauley | ?th |
| 20.7.1958 | 10 h Messina | 16 | F2/S 1500 | Cabianca / Lo Coco | | DNF |
| 20.7.1958 | 10 h Messina | 18 | MT4 1500 | Zanarotti / Monti | | DNF |
| 20.7.1958 | 10 h Messina | 23 | S 1500 | de Tomaso / Davis | | 2nd |
| 20.7.1958 | 10 h Messina | | 1500 | Drogo / Haskell | | DNF |
| 3.8.1958 | Rheinland Nürburgring [S1.5] | 39 | TN 1500 | Dan Gurney | Sc. Centro Sud | 8th |
| 3.8.1958 | Rheinland Nürburgring [S1.5] | 43 | | Zéphirin Miani | | 13th |
| 3.8.1958 | Giro delle Calabria | | FS 1500 | Edoardo Lualdi | | DNF |
| 3.8.1958 | Giro delle Calabria | | S 1100 | Scarfiotti | | DNF |
| 3.8.1958 | Giro delle Calabria | | MT4 1100 | La Mattina | | ?th |
| 3.8.1958 | Giro delle Calabria | | S 750 | Sesto Leonardi | | 6th |
| 3.8.1958 | Giro delle Calabria | | S 750 | Giancarlo Rigamonti | | 19th |
| 10.8.1958 | Kanonloppet [Sports] | 12 | FS 1500 | Jon Fast | | DNF |
| 17.8.1958 | Zeltweg [Sports] | 106 | MT4 1500 | Domenico Lo Coco | Domenico Lo Coco | DNA |
| 17.8.1958 | SCCA National Montgomery [BM+CM+DM+EM] | 163 | MT4 Special | Jim Pauley | | 5th |
| 31.8.1958 | Preliminary Thompson [BM+CM+DM+EM] | 63 | MT4 Special | Jim Pauley | | 11th |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 67 | 1500 | George Koehne | Col. George H. Koehne | DNA |
| 31.8.1958 | Preliminary Mansfield [FM+GM+HM+FIII] | 67 | 1500 | George Koehne | Col. George H. Koehne | DNA |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 117 | | Emory Cantey | Emory Cantey | DNA |
| 31.8.1958 | Preliminary Mansfield [FM+GM+HM+FIII] | 117 | | Emory Cantey | Emory Cantey | DNA |
| 31.8.1958 | Preliminary Mansfield [FM+GM+HM+FIII] | 321 | MT4 1500 | Frank Thebiay | Franklin J. Thebiay | DNA |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 321 | MT4 1500 | Frank Thebiay | Franklin J. Thebiay | DNA |
| 1.9.1958 | SCCA National Thompson [BM+CM+DM+EM+FM] | 63 | MT4 Special | Jim Pauley | Briggs S. Cunningham | DNF |
| 13.9.1958 | Preliminary Bridgehampton [GP+HP+HM] | 11 | S 750 | John Milos | | 5th |
| 13.9.1958 | Tourist Trophy | 51 | S 1100 | de Tomaso / Davis | I. de Tomaso | DNA |
| 14.9.1958 | Preliminary Bridgehampton [Handicap] | 11 | S 750 | John Milos | | 9th |
| 14.9.1958 | Preliminary Bridgehampton [Modified] | 11 | S 750 | John Milos | | 6th |
| 20.9.1958 | SCCA National Watkins Glen [FM+GM+HM] | 121 | S 750 | John Milos | John Milos | 11th |
| 21.9.1958 | GP Berlin | 38 | TN 1500 | Gerino Gerini | Scuderia Centro-Süd | 12th |
| 21.9.1958 | GP Berlin | 42 | 1500 | Alessandro de Tomaso | Alessandro de Tomaso | raced |
| 21.9.1958 | GP Berlin | 43 | TN 1500 | Colin Davis | Colin Davis | raced |
| 21.9.1958 | Coupes d'Automne | | S 1500 | Henri Perrier | | 3rd |
| 21.9.1958 | Preliminary Galveston [CM+DM+EM+FM] | | MT4 1500 | Frank Thebiay | | 5th |
| 27.9.1958 | Gardena [Main] | 77 | TN 1500 | Bill Leyden | | DNA |
| 5.10.1958 | Innsbruck [GT+1.6/S1.1] | 78 | S 1100 | Umberto Bini | Scuderia Sant'Ambroeus | 1st |
| 5.10.1958 | Innsbruck [GT+1.6/S1.1] | 79 | 1100 | Hans Bauer | Scuderia Sant'Ambroeus | 5th |
| 5.10.1958 | Innsbruck [S+1.1] | 84 | S 1500 | "Wal Ever" | Walter Breveglieri | 8th |
| 5.10.1958 | Innsbruck [S+1.1] | 86 | FS 1500 | Edoardo Lualdi | Edoardo Lualdi | DNA |
| 5.10.1958 | SCCA National Virginia [FP+GP+HM] | 121 | S 750 | El Ginther | | 1st |
| 12.10.1958 | USAC Riverside | 35 | 2000S | Pete Woods | C. Vernon | 22nd |
| 12.10.1958 | USAC Riverside | 117 | MT4 TN 1500 Morelli | Harry Hanford | Tim Considine | 14th |
| 12.10.1958 | 6 h Venice | | | John Phipps | | DNF |
| 19.10.1958 | SCCA Regional Lime Rock [GP+HP+HM] | 47 | S 750 | John B. Mull | | 2nd |
| 26.10.1958 | Vineland [FP+HM] | 711 | S 750 | El Ginther | | ?th |
| 26.10.1958 | Vineland [GM+HM] | 711 | S 750 | El Ginther | | ?th |
| 26.10.1958 | Vineland [Main] | | MT4 TN 1500 Morelli Spyder | Otto Linton | | ?th |
| 26.10.1958 | Vineland [FP+HM] | | MT4 TN 1500 Morelli Spyder | Otto Linton | | DNF |
| 26.10.1958 | Modena [Sports] | | 1500 | "Wal Ever" | | 2nd |
| 4.11.1958 | Coppa Sant Ambroeus [Sports] | 201 | S 750 | Giancarlo Rigamonti | | ?th |
| 4.11.1958 | Coppa Sant Ambroeus [Sports] | 212 | S 1100 | Gianni Manelli | | ?th |
| 4.11.1958 | Coppa Sant Ambroeus [Sports] | 222 | FS 1500 | Edoardo Lualdi | | 1st |
| 4.11.1958 | Coppa Sant Ambroeus [Sports] | 223 | F2/S 1500 | "Wal Ever" | | ?th |
| 4.12.1958 | Preliminary Nassau TT [GT2.0] | 47 | S 750 | John B. Mull | | raced |
| 4.12.1958 | Preliminary Nassau TT [GT2.0] | 89 | S 750 | Robert Publicker | | DNF |
| 4.12.1958 | Nassau TT | 89 | S 750 | Robert Publicker | | DNF |
| 5.12.1958 | Preliminary Governor's Trophy [S2.0] | 47 | S 750 | John B. Mull | | DNF |
| 5.12.1958 | Governor's Trophy | 47 | S 750 | John B. Mull | | 21st |
| 5.12.1958 | Preliminary Governor's Trophy [S2.0] | 89 | S 750 | Robert Publicker | | ?th |
| 6.12.1958 | Nassau [Ladies] | 75 | S 750 | Fifi Fleming | Tom Fleming | 3rd |
| 7.12.1958 | Nassau Memorial Trophy | 47 | S 750 | John B. Mull | | ?th |
| 7.12.1958 | Nassau Trophy | 47 | S 750 | John B. Mull | | DNF |
| 7.12.1958 | Nassau Trophy | 75 | S 750 | Tom Fleming | Tom Fleming | 11th |
| 7.12.1958 | Nassau Trophy | 89 | S 750 | Robert Publicker | | DNS |