| 13.4.1958 | GP Avandaro | 9 | | Ricardo Rodriguez | | 1st |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 22 | #09 | John Peters | John Peters | 10th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 29 | | Joe Playan | Joe Playan | 3rd |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 40 | | Robert Kirby | Robert Kirby | 13th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 88 | | Jack McAfee | Stan Sugarman | 1st |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 112 | | Eldon Beagle | Eldon Beagle | 6th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 118 | #0104 | Jean Pierre Kunstle | Jean-Pierre Kunstle | DNF |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 141 | #0089 | Jack West | Jack West | 19th |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 288 | #06 | Stan Sugarman | | DNS |
| 13.4.1958 | SCCA Regional Palm Springs [FM+GM+HM] | 318 | #0023 | Gary Nelson | Gary Nelson | 11th |
| 13.4.1958 | GP Avandaro | | | Ken Miles | | 2nd |
| 13.4.1958 | Coupes de Vitesse [S2.0] | | #0076 | Pierre Houdusse | | 3rd |
| 20.4.1958 | San Salvador | 8 | | Hubert Wisse | Hubert Wisse | 1st |
| 20.4.1958 | San Salvador | 9 | | Ricardo Rodriguez | Ricardo Rodríguez | DNF |
| 20.4.1958 | SCCA Regional Galveston [Modified] | 62 | | Bobby Burns | | 5th |
| 20.4.1958 | Preliminary Galveston [FM+GM+HM] | 62 | | Bobby Burns | | 1st |
| 20.4.1958 | SCCA National Marlboro [BM+CM+DM+EM+FM] | 140 | | Bob Holbert | | 2nd |
| 20.4.1958 | SCCA National Marlboro [BM+CM+DM+EM+FM] | 741 | | Don Sesslar | | 3rd |
| 20.4.1958 | Marlboro [Handicap 1st Heat] | 741 | | Don Sesslar | | 4th |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 23 | #0139 | Denise McCluggage | | 3rd |
| 27.4.1958 | Aguascalientes | 42 | | Ricardo Rodriguez | | 1st |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 61 | | Briggs Cunningham | | 6th |
| 27.4.1958 | Preliminary Louisville [BM+CM+DM+EM+FM+GM] | 95 | | Ed Crawford | | 2nd |
| 27.4.1958 | SCCA Regional Louisville [BM+CM+DM+EM+FM+GM] | 95 | | Ed Crawford | | 1st |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 141 | #0030 | Bill Lewis | | DNA |
| 27.4.1958 | SCCA Regional Louisville [BM+CM+DM+EM+FM+GM] | 174 | | Don Sesslar | | 2nd |
| 27.4.1958 | Preliminary Louisville [BM+CM+DM+EM+FM+GM] | 174 | | Don Sesslar | | 3rd |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 333 | #0064 | Newton Davis | | 11th |
| 27.4.1958 | GP Napoli [S1.5] | | #0036 | Ludwig Fischer | | 5th |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 23 | #0139 | Denise McCluggage | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 23 | #0139 | Denise McCluggage | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 74 | | Don Sesslar | | ?th |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 74 | | Don Sesslar | | 3rd |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 127 | | Roy Schecter | | ?th |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 127 | | Roy Schecter | | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 140 | | Bob Holbert | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 140 | | Bob Holbert | | ?th |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 333 | #0064 | Newton Davis | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 333 | #0064 | Newton Davis | | DNA |
| 4.5.1958 | Sidar Airfield | | | Ricardo Rodriguez | | 1st |
| 10.5.1958 | Novice Tracy [Modified] | 141 | #0089 | Jack West | Jack D. West | 1st |
| 11.5.1958 | Hawaii [Locals] | 7 | #0069 | Loretta Richert | Loretta Richert | 4th |
| 11.5.1958 | Hawaii [S1.6] | 7 | #0069 | Loretta Richert | Loretta Richert | 5th |
| 11.5.1958 | Hawaii [S+1.6] | 7 | #0069 | Loretta Richert | Loretta Richert | 10th |
| 11.5.1958 | Hawaii [Match] | 7 | #0069 | Loretta Richert | Loretta Richert | DNA |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 12 | | Eldon Beagle | | 2nd |
| 11.5.1958 | SCCA Regional Tracy [CM+DM+EM] | 12 | | Eldon Beagle | | 4th |
| 11.5.1958 | Hawaii [Match] | 29 | | Joe Playan | Joe Playan | DNA |
| 11.5.1958 | Hawaii [S1.6] | 29 | | Joe Playan | Joe Playan | DNA |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 36 | | Gordon Swett | Dr. Gordon Swett | 12th |
| 11.5.1958 | Targa Florio | 80 | | Scarlatti / Barth | Porsche KG | DNF |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 141 | #0089 | Jack West | Jack D. West | 3rd |
| 11.5.1958 | SCCA Regional Tracy [CM+DM+EM] | 141 | #0089 | Jack West | Jack D. West | 7th |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 188 | | Jack McAfee | Stan Sugarman | 1st |
| 11.5.1958 | SCCA Regional Tracy [CM+DM+EM] | 188 | | Jack McAfee | Stan Sugarman | 1st |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 193 | #06 | Betty Shutes | Betty Shutes | DNA |
| 11.5.1958 | SCCA Regional Tracy [MG+Ladies+Sedan+FIII] | 193 | #06 | Betty Shutes | Betty Shutes | 1st |
| 11.5.1958 | SCCA Regional Tracy [FM+GM+HM] | 212 | | Erv Lehr | Erv Lehr | DNA |
| 15.5.1958 | Aspern [S1.5] | 17 | | Carel Godin de Beaufort | Ecurie Maarsbergen | DNF |
| 15.5.1958 | Aspern [S1.5] | 18 | | Heini Walter | Heinrich Walter | DNS |
| 15.5.1958 | Aspern [S1.5] | 19 | | Christian Heins | Bino Heins | raced |
| 15.5.1958 | Aspern [S1.5] | 24 | #0040 | Ernst Vogel | ÖASC | 2nd |
| 15.5.1958 | Aspern [S1.5] | 25 | | Heinz Schiller | Ecurie Léman | raced |
| 15.5.1958 | Aspern [S1.5] | 26 | #0079 | Edouard Margairaz | Ecurie Léman | DNA |
| 17.5.1958 | Chester | | #0068 | Joe Sheppard | | raced |
| 18.5.1958 | Preliminary Cumberland [Ladies] | 23 | #0139 | Denise McCluggage | Scuderia Skiddoo | 1st |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | 23 | #0139 | Denise McCluggage | Scuderia Skiddoo | ?th |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | 27 | | Roy Schecter | Ray R. Schechter | DNA |
| 18.5.1958 | Preliminary Cumberland [Ladies] | 30 | #0063 | Suzy Dietrich | Bernard Vihl | 3rd |
| 18.5.1958 | SCCA National Cumberland [BM+CM+DM] | 74 | | Don Sesslar | Cyrus L. Fulton | 3rd |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | 74 | | Don Sesslar | Cyrus L. Fulton | 1st |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | 233 | #0064 | Newton Davis | Newton B. Davis | DNA |
| 18.5.1958 | SCCA National Cumberland [EM+FM] | | | Bob Holbert | | ?th |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 12 | | Eldon Beagle | Eldon Beagle | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 29 | | Joe Playan | Joe Playan | DNA |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 33 | #0064 | Newton Davis | | 5th |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 40 | | Davis / Kirby | John P. Davis | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 50 | | Ken Miles | Zipper Estes | 2nd |
| 31.5.1958 | LASC Green Acres [S/GT1.6] | 53 | | | | raced |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 63 | | Briggs Cunningham | Briggs Cunningham | 6th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 77 | | Vic Meinhardt | | 3rd |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 83 | | Dick Thompson | | 2nd |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 88 | | Jack McAfee | Stanley Sugarman | 1st |
| 31.5.1958 | Preliminary La Junta [BM+CM+DM+EM+FM+GM] | 119 | | Donald Berlin | | 5th |
| 31.5.1958 | SCCA National Bridgehampton [FM+GM] | 140 | | Bob Holbert | | 1st |
| 31.5.1958 | Preliminary Santa Barbara [Ladies] | 193 | #06 | Betty Shutes | Betty Shutes | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Modified 1.5] | 222 | #09 | John Peters | John Peters | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Novice] | 222 | #09 | John Peters | John Peters | 1st |
| 31.5.1958 | Preliminary La Junta [BM+CM+DM+EM+FM+GM] | | | Bob Donner | | 3rd |
| 31.5.1958 | ICNSCC Deer Park [Formula Libre] | | | Curt Berreman | | 4th |
| 31.5.1958 | LASC Green Acres [S/GT1.6] | | #0063 | Suzy Dietrich | | raced |
| 1.6.1958 | SCCA National Bridgehampton [BM+CM+DM+EM+FM] | 83 | | Dick Thompson | | 8th |
| 1.6.1958 | SCCA Regional La Junta [FM+GM+HM+EP+FP+GP] | 119 | | Donald Berlin | | 3rd |
| 1.6.1958 | SCCA National Bridgehampton [BM+CM+DM+EM+FM] | 140 | | Bob Holbert | | 5th |
| 1.6.1958 | SCCA Regional Dunkirk [FM+GM+HM] | 141 | #0030 | Bill Lewis | | 3rd |
| 1.6.1958 | GP Dunkirk | 141 | #0030 | Bill Lewis | | 4th |
| 1.6.1958 | Santa Barbara [Ladies] | 193 | #06 | Betty Shutes | Betty Shutes | ?th |
| 1.6.1958 | GP Dunkirk | 270 | | Bernie Keller | | DNF |
| 1.6.1958 | SCCA Regional Dunkirk [FM+GM+HM] | 270 | | Bernie Keller | | 6th |
| 1.6.1958 | SCCA Regional La Junta [FM+GM+HM+EP+FP+GP] | | | Bob Donner | | DNS |