| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 24 | 500 TRC | Ray Jones | A. D. Logan | DNA |
| 31.8.1958 | SCCA Regional Mansfield [CM+DM+EM+FM+GM+UR] | 103 | 750 Monza | Northrop Peck | C. Northrop Peck | DNA |
| 1.9.1958 | SCCA National Thompson [BM+CM+DM+EM+FM] | 25 | 500 TRC | Gaston Andrey | | 6th |
| 1.9.1958 | SCCA National Thompson [BM+CM+DM+EM+FM] | 45 | 500 TRC | Gilbert Geitner | | 8th |
| 1.9.1958 | SCCA National Thompson [BP+CP+DP] | 96 | 250 GT LWB Berlinetta TdF | George Reed | | 2nd |
| 1.9.1958 | SCCA National Thompson [BM+CM+DM+EM+FM] | 135 | 500 TRC | Allen Markelson | | 9th |
| 6.9.1958 | SCCA National Road America [BP+CP+DP+EP] | 44 | 250 GT | John Max Wolf | | DNS |
| 6.9.1958 | SCCA National Road America [BP+CP+DP+EP] | 96 | 250 GT LWB Berlinetta TdF | George Reed | | 3rd |
| 7.9.1958 | USAC Lime Rock | 4 | 860 Monza Scaglietti Spyder | Bruce Kessler | NART | 2nd |
| 7.9.1958 | 500 km Interlagos | 7 | | Fritz D'Orey | | 1st |
| 7.9.1958 | GP Leopoldville | 7 | 250 TR Scaglietti Spyder 58 | Paul Frère | Equipe Nationale Belge | DNF |
| 7.9.1958 | 500 mile Road America | 7 | 625 TR Spyder Scaglietti | Pabst / Gary | | DNF |
| 7.9.1958 | GP Leopoldville | 8 | 340 America | Alain de Changy | Equipe Nationale Belge | DNF |
| 7.9.1958 | 500 mile Road America | 9 | 500 Mondial | Anderson / Stelloh | | 7th |
| 7.9.1958 | 500 mile Road America | 10 | 750 Monza | John Kilborn | | DNS |
| 7.9.1958 | 500 mile Road America | 13 | 500 TR | Place / Neill | | 5th |
| 7.9.1958 | 500 mile Road America | 15 | 250 TR Scaglietti Spyder 58 | Johnston / Seaverns / Lunken | James R. Johnston | 2nd |
| 7.9.1958 | USAC Lime Rock | 24 | 166 MM Touring Barchetta | Herb Swan | | 8th |
| 7.9.1958 | 500 mile Road America | 25 | 335 Sport | Reventlow / Andrey | Mike Garber | 1st |
| 7.9.1958 | USAC Lime Rock | 26 | 750 Monza Scaglietti Spyder | Warren Jacobs | | 14th |
| 7.9.1958 | USAC Lime Rock | 32 | 500 TRC | Allen Markelson | | 3rd |
| 7.9.1958 | 500 mile Road America | 43 | 250 TR Scaglietti Spyder 58 | E. D. Martin | North American Racing Team | DNF |
| 7.9.1958 | Coppa Inter-Europa [GT+1.3] | 75 | 250 GT | Augusto Caraceni | A. Caraceni | ?th |
| 7.9.1958 | Coppa Inter-Europa [GT+1.3] | 75 | 250 GT LWB TdF | Ottavio Randaccio | | 5th |
| 7.9.1958 | Coppa Inter-Europa [GT+1.3] | 76 | 250 GT | Luigi Taramazzo | | 1st |
| 7.9.1958 | Coppa Inter-Europa [GT+1.3] | 78 | 250 GT TdF | Curzio Quadrio | Quadrio Curzio | 6th |
| 7.9.1958 | Coppa Inter-Europa [GT+1.3] | 79 | 250 GT | Armando Zampiero | | 4th |
| 7.9.1958 | 500 mile Road America | 95 | 375 Plus | von Kaesborg / Reed | | DNF |
| 7.9.1958 | Coppa Inter-Europa [GT+1.3] | | 250 GT | Edoardo Lualdi | | 3rd |
| 7.9.1958 | 500 km Interlagos | | | Landi / Lopes | | 5th |
| 7.9.1958 | 500 km Interlagos | | | Pascoal Nastromagario | | 4th |
| 7.9.1958 | Coppa Inter-Europa [GT+1.3] | | 250 GT LWB Berlinetta Scaglietti TdF | Carlo Leto di Priolo | Carlo Leto Di Priolo | 2nd |
| 7.9.1958 | Coppa Inter-Europa [GT+1.3] | | 250 GT | Wolfgang Seidel | Wolfgang Seidel | DNF |
| 13.9.1958 | Tourist Trophy | 1 | 250 TR | Mike Hawthorn | Scuderia Ferrari | DNA |
| 13.9.1958 | Tourist Trophy | 2 | 250 TR Scaglietti Spyder 58 | Rousselle / Bianchi | Equipe Nationale Belge | DNA |
| 13.9.1958 | Tourist Trophy | 23 | 500 TRC | Tavano / Delaroche | Fernand Tavano | DNA |
| 13.9.1958 | Preliminary Bridgehampton [GT] | 250 | 250 GT Boano | Frank Adams | | 1st |
| 14.9.1958 | SCCA Regional Meadowdale [BM+CM+DM+BP] | 7 | 625 TR Spyder Scaglietti | Augie Pabst | | DNA |
| 14.9.1958 | 500 mile Rafaela | 9 | 625 TF Vignale Spyder | Alvaro Piano | | 12th |
| 14.9.1958 | SCCA Regional Meadowdale [BM+CM+DM+BP] | 12 | 121 LM Scaglietti Spyder | Loyal Katskee | | raced |
| 14.9.1958 | SCCA Regional Meadowdale [BM+CM+DM+BP] | 15 | 250 TR Scaglietti Spyder 58 | Jim Johnston | | 8th |
| 14.9.1958 | SCCA Regional Meadowdale [EM+FM+GM] | 31 | 500 TR | James Place | | 3rd |
| 14.9.1958 | SCCA Regional Meadowdale [BM+CM+DM+BP] | 34 | | Bob Walker | | DNS |
| 14.9.1958 | SCCA Regional Meadowdale [EM+FM+GM] | 34 | | Bob Walker | | DNF |
| 14.9.1958 | SCCA Regional Meadowdale [BM+CM+DM+BP] | 42 | 500 TR Scaglietti Spyder | J. Robert Schroeder | | raced |
| 14.9.1958 | SCCA Regional Meadowdale [EM+FM+GM] | 42 | 500 TR Scaglietti Spyder | J. Robert Schroeder | | DNA |
| 14.9.1958 | SCCA Regional Bridgehampton [Modified] | 45 | 500 TRC | Gilbert Geitner | | 6th |
| 14.9.1958 | SCCA Regional Meadowdale [EM+FM+GM] | 53 | 500 Mondial | Robert Gary | | DNA |
| 14.9.1958 | SCCA Regional Meadowdale [EM+FM+GM] | 71 | 500 TR Scaglietti Spyder | John Quackenbush | | 2nd |
| 14.9.1958 | Preliminary Bridgehampton [Modified] | 99 | 860 Monza Scaglietti Spyder | Bob Grossman | | DNF |
| 14.9.1958 | SCCA Regional Bridgehampton [Modified] | 99 | 860 Monza Scaglietti Spyder | Bob Grossman | | 3rd |
| 14.9.1958 | Preliminary Bridgehampton [Handicap] | 99 | 860 Monza Scaglietti Spyder | Bob Grossman | | 2nd |
| 14.9.1958 | Preliminary Bridgehampton [BP+CP+DP+EP+FP+HP] | 250 | 250 GT Boano | Frank Adams | | 3rd |
| 14.9.1958 | SCCA Regional Bridgehampton [BP+CP+DP+EP+FP+GP] | 250 | 250 GT Boano | Frank Adams | | 3rd |
| 14.9.1958 | SCCA Regional Meadowdale [BM+CM+DM+BP] | | TR | | | raced |
| 14.9.1958 | 500 mile Rafaela | | | Froilan Gonzalez | | 1st |
| 20.9.1958 | GP Watkins Glen | 4 | 375 MM | Duncan Black | Duncan Black | DNA |
| 20.9.1958 | GP Watkins Glen | 22 | 250 TR Scaglietti Spyder 58 | Ed Hugus | J. Edward Hugus | 6th |
| 20.9.1958 | GP Watkins Glen | 25 | 335 Sport | Gaston Andrey | | 3rd |
| 20.9.1958 | Oulton Park International [S+1.1] | 41 | 250 TR Scaglietti Spyder 58 | Rouselle / "Beurlys" | Equipe Nationale Belge | DNA |
| 20.9.1958 | SCCA National Watkins Glen [FM+GM+HM] | 45 | 500 TRC | Gilbert Geitner | A. H. Burrough | DNA |
| 20.9.1958 | GP Watkins Glen | 45 | 500 TRC | Gilbert Geitner | A. H. Burrough | 8th |
| 20.9.1958 | GP Watkins Glen | 64 | 250 TR Scaglietti Spyder 58 | E. D. Martin | E. D. Martin | 10th |
| 20.9.1958 | Preliminary Watkins Glen [UR+FIII] | 90 | 375 Indianapolis | William Milliken | William Milliken | 9th |
| 20.9.1958 | SCCA National Watkins Glen [BP+CP] | 165 | 250 GT Boano | Frank Adams | | DNF |
| 20.9.1958 | SCCA National Watkins Glen [BP+CP] | 196 | 250 GT LWB Berlinetta TdF | George Reed | | 6th |
| 20.9.1958 | Taça Cidade de Luanda | | | "Jean Beurlys" | | raced |
| 21.9.1958 | GP Angola | 10 | 250 TR Scaglietti Spyder 58 | Alain de Changy | Ecurie Francorchamps | 2nd |
| 21.9.1958 | GP Angola | 16 | 340 America | Yves Tassin | Ecurie Francorchamps | 10th |
| 21.9.1958 | GP Berlin | 23 | 500 TRC | Gaetano Starrabba | Gaetano Starrabba | ?th |
| 21.9.1958 | USAC Marlboro | 35 | 500 TRC | Allen Markelson | | 5th |
| 21.9.1958 | SCCA Regional Galveston [CM+DM+EM+FM+GM] | 103 | 750 Monza | Northrop Peck | | 5th |
| 21.9.1958 | Preliminary Galveston [CM+DM+EM+FM] | 103 | 750 Monza | Northrop Peck | | 1st |
| 21.9.1958 | Tour de France | 159 | 250 GT | Noblet / "Lorica" | "Pertin" | 15th |
| 21.9.1958 | Tour de France | 160 | 250 GT | Trintignant / Picard | Scuderia Los Amigos | 2nd |
| 21.9.1958 | Tour de France | 161 | 250 GT LWB TdF | Gómez Mena / Meyer | Alfonso Gomez Mena | DNF |
| 21.9.1958 | Tour de France | 162 | 250 GT | da Silva Ramos / Estager | Hernano Da Silva Ramos | 3rd |
| 21.9.1958 | Tour de France | 163 | 250 GT | Péron / Schell | Jacques Péron | 4th |
| 21.9.1958 | Tour de France | 164 | 250 GT | Gendebien / Bianchi | Ecurie Francorchamps | 1st |
| 21.9.1958 | Tour de France | 165 | 250 GT | Bourillot / Mazetti | Claude Bourillot | 7th |
| 21.9.1958 | Tour de France | 166 | 250 GT LWB | Faure / Paulard | Philippe Faure | 8th |
| 21.9.1958 | Tour de France | 167 | 250 GT | Schild / Delageneste | J. P. Schild | 5th |
| 21.9.1958 | Tour de France | 168 | 250 GT | Mairesse / Desse | Ecurie Francorchamps | DNF |
| 21.9.1958 | Tour de France | 169 | 250 GT | Ringoir / Heinzelmann | Ecurie Francorchamps | DNF |
| 21.9.1958 | Tour de France | 170 | 250 GT Boano | Parucci / Bonnet | | DNS |
| 21.9.1958 | GP Angola | | 500 TR | Maximino Correira | | raced |
| 21.9.1958 | SCCA Regional Galveston [CM+DM+EM+FM+GM] | | 750 Monza | Jim Hall | | 4th |
| 21.9.1958 | Coupes d'Automne | | 500 TRC | Fernand Tavano | | 1st |
| 21.9.1958 | Del Mar [Modified] | | 250 TR Scaglietti Spyder 58 | Josie von Neumann | | 2nd |
| 21.9.1958 | Preliminary Galveston [CM+DM+EM+FM] | | 750 Monza | Jim Hall | | raced |
| 21.9.1958 | Del Mar [Modified] | | 250 TR Scaglietti Spyder 58 | Dick Morgensen | | 1st |
| 21.9.1958 | Del Mar [Ladies+Sedan] | | 250 TR Scaglietti Spyder 58 | Josie von Neumann | | 1st |
| 21.9.1958 | Del Mar [Modified] | | 500 TRC | Jack Nethercutt | Jack Nethercutt | 4th |
| 21.9.1958 | Preliminary Galveston [BP+CP+DP+EP+GM] | | 250 GT | Bill Petty | | DNF |
| 28.9.1958 | Barra da Tijuca | 17 | 225 S Vignale Spyder | Mário Olivetti | | 4th |
| 28.9.1958 | USAC Watkins Glen | 24 | 166 MM Touring Barchetta | Herb Swan | | DNF |
| 28.9.1958 | ICNSCC Ellensburg [Modified] | 31 | 500 TR | Frank Becker | | DNF |
| 28.9.1958 | Barra da Tijuca | 46 | 250 TR Scaglietti Spyder | Celso Lara Barberis | | 1st |
| 28.9.1958 | Barra da Tijuca | 82 | 250 TR Scaglietti Spyder | José Gimenez Lopes | | 2nd |
| 28.9.1958 | Hourglass Field [Ladies+FIII] | 112 | 250 TR Scaglietti Spyder 58 | Josie von Neumann | | 1st |