| 15.6.1958 | Prix de Paris [S2.0] | 85 | A6GCS | Marcel Balsa | | 5th |
| 15.6.1958 | SCCA Regional Laguna Seca [CM+DM+EM] | 138 | 200S I | Chuck Howard | | 4th |
| 15.6.1958 | Prix de Paris [S2.0] | | 150S | Albert Clément | | 6th |
| 22.6.1958 | 24 h Le Mans | 1 | 300S | Godia-Sales / Bonnier | Francisco Godia | DNF |
| 22.6.1958 | 24 h Le Mans | 23 | 200S I | Martin / Dagorne | Jean Thépenier | DNF |
| 22.6.1958 | SCCA National Road America [EM+FM+GM] | 32 | | John Middleton | | 9th |
| 22.6.1958 | SCCA National Road America [BM+CM+DM+BP] | 44 | 300S | J. E. Rose | J. E. Rose | DNA |
| 22.6.1958 | SCCA National Road America [BM+CM+DM+BP] | 45 | 450S | J. E. Rose | J. E. Rose | DNA |
| 22.6.1958 | Circuito di Caserta [S2.0] | 54 | A6GCS/53 | "Wal Ever" | | raced |
| 22.6.1958 | SCCA National Road America [EM+FM+GM] | 73 | | Logan Lewis | Logan Lewis | 16th |
| 22.6.1958 | Circuito di Caserta [S2.0] | | 200S | Franco Bordoni | | 2nd |
| 22.6.1958 | Circuito di Caserta [S2.0] | | 200S | Adolfo Tedeschi | | 3rd |
| 22.6.1958 | Vallelunga [GT2.6] | | | Piero Bernabei | | 1st |
| 22.6.1958 | Circuito di Caserta [S2.0] | | | Odoardo Govoni | | 5th |
| 22.6.1958 | Circuito di Caserta [S2.0] | | | Guido Perrella | | 7th |
| 29.6.1958 | Riverside [FM+GM+HM] | 8 | 150S | Dusty Miller | | 4th |
| 29.6.1958 | Riverside [BM+CM+DM+EM] | 53 | | Chuck Kessinger | | 9th |
| 29.6.1958 | Riverside [BM+CM+DM+EM] | 98 | 450S | Pete Woods | John Edgar | DNF |
| 5.7.1958 | SCCA National Lime Rock [CM+DM+EM+FM] | 8 | 200S I | John Fitch | | 3rd |
| 5.7.1958 | Walterboro [race 5] | 40 | 450S | Harry Rollings | | DNF |
| 5.7.1958 | Walterboro [race 3] | 40 | 450S | Harry Rollings | | 2nd |
| 6.7.1958 | Circuito di Sassari | 4 | | Bruno Ruffo | | DNF |
| 6.7.1958 | Circuito di Sassari | 12 | | Adolfo Tedeschi | | 1st |
| 6.7.1958 | SCCA Regional Vaca Valley [CM+DM+EM] | 138 | | Chuck Howard | Chuck Howard | DNA |
| 6.7.1958 | Hammond [Main] | 144 | 300S | J. E. Rose | | 1st |
| 6.7.1958 | Hammond [BM+CM+DM+EM] | 144 | 300S | J. E. Rose | | 1st |
| 6.7.1958 | Circuito di Sassari | | | Franco Bordoni | | 2nd |
| 6.7.1958 | Circuito di Sassari | | | Mennato Boffa | | DNF |
| 6.7.1958 | Baden Rock | | | Firman | | 4th |
| 6.7.1958 | Circuito di Sassari | | 200S I | Antonio Negri | | 3rd |
| 6.7.1958 | Circuito di Sassari | | A6GCS/53 | "Wal Ever" | | 5th |
| 6.7.1958 | Hammond [Main] | | | Bob Claypool | | 6th |
| 6.7.1958 | Circuito di Sassari | | | Odoardo Govoni | | DNQ |
| 6.7.1958 | Circuito di Sassari | | | Perrella | | DNQ |
| 6.7.1958 | Hammond [BM+CM+DM+EM] | | | Bob Claypool | | 4th |
| 13.7.1958 | Vila Real | 2 | 300S | Stirling Moss | Maserati | 1st |
| 13.7.1958 | Vila Real | 4 | 300S | Jean Behra | Maserati | 2nd |
| 13.7.1958 | Vila Real | 6 | 300S | Francisco Godia-Sales | | 3rd |
| 13.7.1958 | Vila Real | 22 | A6GCS | Maria Teresa de Filippis | Scuderia Centro-Sud | DNF |
| 13.7.1958 | Vila Real | 38 | A6GCS | Manuel Nogueira Pinto | Scuderia Centro-Sud | DNF |
| 13.7.1958 | Traverse City [Main] | | | John Middleton | | 3rd |
| 19.7.1958 | Berwick [Open] | 19 | A6GCS | Ben Diaz | | raced |
| 20.7.1958 | SCCA Regional Thompson [Modified+UR] | 11 | 4CLT/48 | George Weaver | | 2nd |
| 20.7.1958 | SCCA Regional Thompson [Modified+UR] | 43 | 150S | E. F. Spicer | | raced |
| 20.7.1958 | 10 h Messina | | 200S I | Negri / Tedeschi | | raced |
| 20.7.1958 | 10 h Messina | | | Maria Teresa de Filippis | | DNF |
| 20.7.1958 | 10 h Messina | | 200S | Bellucci / Ruffo | | 3rd |
| 24.7.1958 | Lourenço Marques | 34 | 300S | Álvaro Lopes | ATCA | 1st |
| 3.8.1958 | Midland | | 250S | Bob Aylward | | 3rd |
| 3.8.1958 | Giro delle Calabria | | 200S | Adolfo Tedeschi | | 5th |
| 10.8.1958 | Kanonloppet [Sports] | 1 | 300S | Stirling Moss | | 1st |
| 10.8.1958 | Kanonloppet [Sports] | 14 | 200S | Jo Bonnier | | DNF |
| 16.8.1958 | Roskilde Ring [S+1.5] | 1? | 300S | Stirling Moss | | 2nd |
| 17.8.1958 | Zeltweg [Sports] | 113 | | Erwin Lechner | Lothar Rafael | DNA |
| 17.8.1958 | Zeltweg [Sports] | 116 | A6GCS/53 | "Wal Ever" | "Wal Ever" | DNA |
| 17.8.1958 | Zeltweg [Sports] | 118 | 200S I | Ulf Norinder | Ulf Norinder | DNF |
| 30.8.1958 | Novice Mansfield [S+1.6] | 10 | 250S I | Alan Connell | Alan B. Connell | DNA |
| 30.8.1958 | NSCC Silverstone [S2.7] | 48 | A6GCS | John Barnett | J. Barnett | DNA |
| 31.8.1958 | Santa Barbara [EM+FM+GM+HM] | 9 | 150S | Dusty Miller | | 10th |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 10 | 250S I | Alan Connell | Alan B. Connell | DNA |
| 31.8.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP+UR] | 10 | 250S I | Alan Connell | Alan B. Connell | DNA |
| 31.8.1958 | Courtland Trophy | 26 | 450S | Walt Cline | | DNF |
| 31.8.1958 | Courtland [CM+DM+EM+FM+BP+CP+DP+EP] | 26 | 450S | Walt Cline | | 1st |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 45 | 450S | J. E. Rose | Ebb Rose | DNA |
| 31.8.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP+UR] | 45 | 450S | J. E. Rose | Ebb Rose | DNA |
| 31.8.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP+UR] | 46 | | J. E. Rose | Ebb Rose | DNA |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 46 | | J. E. Rose | Ebb Rose | DNA |
| 31.8.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP+UR] | 121 | 250S | Bob Aylward | Bob Aylward | DNA |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 121 | 250S | Bob Aylward | Bob Aylward | 2nd |
| 31.8.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP+UR] | 141 | 200S I | Hap Sharp | Dave Morgan | DNA |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 141 | 200S I | Hap Sharp | Dave Morgan | DNA |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 144 | 300S | J. E. Rose | Ebb Rose | DNA |
| 31.8.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP+UR] | 144 | 300S | J. E. Rose | Ebb Rose | DNA |
| 7.9.1958 | 500 mile Road America | 5 | | John Middleton | | DNS |
| 7.9.1958 | USAC Lime Rock | 12 | 300S | Lloyd Ruby | Micro-Lube | 9th |
| 7.9.1958 | USAC Lime Rock | 28 | 200S I | Bob Kuhn | | 6th |
| 7.9.1958 | 500 mile Road America | 75 | | Lewis / Ward | | DNF |
| 14.9.1958 | SCCA Regional Bridgehampton [Modified] | 10 | 300S | Joe Giubardo | | 4th |
| 14.9.1958 | Preliminary Bridgehampton [Modified] | 10 | 300S | Joe Giubardo | | 3rd |
| 14.9.1958 | 500 mile Rafaela | | 300S | Roberto Bonomi | | 5th |
| 14.9.1958 | 500 mile Rafaela | | | Luis E. Brossutti | | 7th |
| 20.9.1958 | Preliminary Watkins Glen [UR+FIII] | 5 | | Howard Brown | Howard Brown | 13th |
| 20.9.1958 | Preliminary Watkins Glen [UR+FIII] | 7 | V8RI | Phil Cade | Phil Cade | 1st |
| 20.9.1958 | Preliminary Watkins Glen [UR+FIII] | 11 | 4CLT/48 | George Weaver | George Weaver | DNA |
| 21.9.1958 | GP Angola | 3 | 300S | Álvaro Lopes | | DNF |
| 21.9.1958 | GP Berlin | 21 | 200S I | Adolfo Tedeschi | Adolfo Tedeschi | raced |
| 21.9.1958 | GP Berlin | 22 | 200S | Mennato Boffa | Mennato Boffa | DNA |
| 21.9.1958 | GP Berlin | 24 | 200S | Ulf Norinder | Ulf Norinder | DNA |
| 21.9.1958 | GP Berlin | 25 | 200S | Wolfgang Seidel | Scuderia Centro-Süd | ?th |
| 21.9.1958 | Preliminary Galveston [CM+DM+EM+FM] | 44 | 300S | J. E. Rose | | 2nd |
| 21.9.1958 | SCCA Regional Galveston [CM+DM+EM+FM+GM] | 44 | 300S | J. E. Rose | | 1st |
| 21.9.1958 | SCCA Regional Galveston [CM+DM+EM+FM+GM] | | 250S | Bob Aylward | | 2nd |
| 28.9.1958 | USAC Watkins Glen | 11 | 250F | Jo Bonnier | Joakim Bonnier | 1st |
| 28.9.1958 | USAC Watkins Glen | 12 | 200S I | Bob Kuhn | Lieutenant Colonel Robert Kuhn | 5th |
| 28.9.1958 | USAC Watkins Glen | 112 | 300S | Lloyd Ruby | | DNF |
| 28.9.1958 | USAC Watkins Glen | | 8CTF | Edward Lawrence | | DNA |
| 5.10.1958 | SCCA Regional Thompson [Modified+UR] | 7 | V8RI | Phil Cade | | 5th |
| 5.10.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+GM] | 9 | 450S | John Haas | Don Perkins | DNF |
| 5.10.1958 | Innsbruck [S+1.1] | 95 | 200S I | Adolfo Tedeschi | Adolfo Tedeschi | DNA |
| 5.10.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+GM] | 177 | | Gene Parsons | | 7th |