| 8.2.1958 | Preliminary Pomona [Production +2.7] | 112 | 300 SL | Bill Atkins | Bill Atkins | DNA |
| 9.2.1958 | Pomona [Production +2.0] | 10 | 300 SL | Lek von Kaesborg | Velva von Kaesborg | DNA |
| 9.2.1958 | Pomona [Production +2.0] | 36 | 300 SL | Tony Settember | Tony Settember | 2nd |
| 9.2.1958 | Pomona [Production +2.0] | 110 | 300 SL | Bob Winkelmann | Bob Winkelmann | 8th |
| 9.2.1958 | Pomona [Production +2.0] | 112 | 300 SL | Bill Atkins | Bill Atkins | DNA |
| 15.2.1958 | Preliminary New Smyrna Beach [Novice 1] | | 300 SL | | | raced |
| 1.3.1958 | Preliminary Phoenix [Novice] | 13 | 300 SL | Russell Cowles | | 16th |
| 1.3.1958 | Preliminary Phoenix [Novice] | 40 | 300 SL | Carlton Beal | | 5th |
| 1.3.1958 | Preliminary Phoenix [Novice] | 110 | 300 SL | Gel Brown | | 6th |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 13 | 300 SL | Russell Cowles | | 6th |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 13 | 300 SL | Russell Cowles | | 6th |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 40 | 300 SL | Carlton Beal | | DNF |
| 2.3.1958 | SCCA Regional Phoenix [Production] | 110 | 300 SL | Bob Winkelmann | | 3rd |
| 2.3.1958 | SCCA Regional Phoenix [BP+CP+DP+EP] | 110 | 300 SL | Bob Winkelmann | | 2nd |
| 2.3.1958 | SCCA Regional Phoenix [Main] | 110 | 300 SL | Bob Winkelmann | | DNF |
| 8.3.1958 | Novice Mansfield [S+1.6] | 171 | 300 SL | D. B. Knight | | DNF |
| 8.3.1958 | Novice Mansfield [S+1.6] | 200 | 190 SL | R. C. Spellman | | 8th |
| 8.3.1958 | Preliminary Boca Raton [Novice] | | 300 SL | Clifford Hoch | | 1st |
| 9.3.1958 | Preliminary Boca Raton [BP+CP+DP+EP] | 59 | 190 SL | T. Murphy | | raced |
| 9.3.1958 | SCCA Regional Boca Raton [CM+DM+EM+FM+GM+BP+CP+DP] | 59 | 190 SL | T. Murphy | | raced |
| 9.3.1958 | Preliminary Mansfield [CM+DM+EM+BP+CP] | 171 | 300 SL | D. B. Knight | | 13th |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 171 | 300 SL | D. B. Knight | | 23rd |
| 9.3.1958 | Preliminary Mansfield [DP+EP+FP] | 200 | 190 SL | R. C. Spellman | | DNF |
| 9.3.1958 | SCCA Regional Mansfield [BP+CP+DP+EP+FP] | 200 | 190 SL | R. C. Spellman | | DNF |
| 22.3.1958 | 12 h Sebring | 4 | 300 SL | Lippmann / Giron | Scuderia Central America | DNA |
| 22.3.1958 | 12 h Sebring | 5 | 300 SL | Alvarez / Rivera | Scuderia Central America | DNA |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 5 | 300 SL | Gel Brown | | 1st |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 60 | 300 SL | Carlton Beal | | 4th |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 127 | 300 SL | Carl Briggs | | 11th |
| 23.3.1958 | SCCA Regional Stockton [Production +1.6] | | 300 SL | Lek von Kaesborg | | DNF |
| 30.3.1958 | SCC-BC Abbotsford [Race 2] | 543 | 300 SL | G. Stangl | | 1st |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 80 | 300 SL | Carlton Beal | Carlton Beal | 9th |
| 20.4.1958 | San Salvador | 11 | 300 SL | Manfred Schmitt | Víctor Safié | raced |
| 20.4.1958 | San Salvador | 12 | 300 SL | Paul O'Shea | A. A. S., Carlos Panama y Samuel Alvarez | 2nd |
| 20.4.1958 | San Salvador | 13 | 300 SL | Manfredo Lippmann | Manfred Lipmann | DNF |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 55 | 300 SL | Bob Rubin | | DNA |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 140 | 300 SL | Jerry Loman | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 54 | 300 SL | Dean Mears | | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 54 | 300 SL | Dean Mears | | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 155 | 300 SL | Bob Rubin | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 155 | 300 SL | Bob Rubin | | DNA |
| 10.5.1958 | Novice Tracy [Production +1.6] | 5 | 300 SL | Gel Brown | Natalie Brown | 2nd |
| 10.5.1958 | Preliminary Tracy [Production +1.6] | 5 | 300 SL | Bob Winkelmann | Natalie Brown | DNA |
| 10.5.1958 | Novice Tracy [Modified] | | Special | John Steers | | 3rd |
| 11.5.1958 | SCCA Regional Tracy [Production Group C] | 5 | 300 SL | Bob Winkelmann | Natalie Brown | DNA |
| 11.5.1958 | Hawaii [S+1.6] | 10 | 300 SL | Lek von Kaesborg | Carlton Beal | 9th |
| 11.5.1958 | Hawaii [Match] | 10 | 300 SL | Lek von Kaesborg | Carlton Beal | DNA |
| 11.5.1958 | Hawaii [Production +1.6] | 10 | 300 SL | Lek von Kaesborg | Carlton Beal | DNA |
| 11.5.1958 | Hawaii [Production +1.6] | 40 | 300 SL | Carlton Beal | Carlton Beal | DNA |
| 11.5.1958 | Hawaii [Match] | 40 | 300 SL | Carlton Beal | Carlton Beal | DNA |
| 11.5.1958 | Hawaii [S+1.6] | 40 | 300 SL | Carlton Beal | Carlton Beal | DNA |
| 11.5.1958 | Targa Florio | 46 | 300 SL | Bongiasca / Bongiasca | | DNS |
| 11.5.1958 | Targa Florio | 48 | 300 SL | Cestelli-Guidi / Musso | | DNF |
| 15.5.1958 | Eläintarhanajo [GT] | 12 | 300 SL | Bjarne Rehn | | 4th |
| 15.5.1958 | Aspern [GT+1.6] | 35 | 300 SL | Alberico Cacciari | Alberico Cacciari | DNA |
| 15.5.1958 | Aspern [GT+1.6] | 36 | 300 SL | Adolf Kern | Adolf Kern | raced |
| 15.5.1958 | Aspern [GT+1.6] | 37 | 300 SL | Theo Geither | Theo Geither | raced |
| 15.5.1958 | Aspern [GT+1.6] | 40 | 300 SL | | | raced |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 55 | 300 SL | Bob Rubin | Bob Rubin | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 110 | 300 SL | Steele Roberts | Steele M. Roberts | DNA |
| 18.5.1958 | SCCA National Cumberland [BP+CP] | 154 | 300 SL | Dean Mears | Dean E. Mears | ?th |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 10 | 300 SL | Lek von Kaesborg | Velva von Kaesborg | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 51 | 300 SL | Brown / Winkelmann | Natalie Brown | DNA |
| 31.5.1958 | Preliminary Santa Barbara [Novice] | 51 | 300 SL | Gel Brown | Natalie Brown | 11th |
| 31.5.1958 | Novice Dunkirk [EP+FP+GP] | 61 | 190 SL | George Morris | | 13th |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 71 | 300 SL | Carl Briggs | Carl Briggs | DNA |
| 31.5.1958 | Novice Dunkirk [EP+FP+GP] | 77 | 190 SL | William Zeisler | | 14th |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 85 | 300 SL | Carlton Beal | Carlton Beal | DNA |
| 31.5.1958 | Novice Dunkirk [CM+EM+GM+HM+BP+CP+DP] | 96 | 300 SL | Jerry Loman | | 6th |
| 31.5.1958 | SCCA National Bridgehampton [BP+CP+UR+FIII] | 154 | 300 SL | Dean Mears | | 4th |
| 31.5.1958 | Preliminary Bridgehampton [GT] | 154 | 300 SL | Dean Mears | | 2nd |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 171 | | Bob Flet | Bob Flet | DNA |
| 31.5.1958 | Preliminary Santa Barbara [BP+CP] | 212 | 300 SL | Bill Atkins | Bill Atkins | DNA |
| 31.5.1958 | ICNSCC Deer Park [Production +1.5] | | 300 SL | Ray Rairdon | | 2nd |
| 31.5.1958 | ICNSCC Deer Park [Production +1.5] | | 300 SL | Dick Jones | | 3rd |
| 31.5.1958 | ICNSCC Deer Park [Modified] | | 300 SL | Dick Jones | | 5th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 10 | 300 SL | Lek von Kaesborg | Velva von Kaesborg | DNA |
| 1.6.1958 | SCCA Regional Dunkirk [CM+DM+EM+CP] | 21 | 300 SL | David Deuble | | 4th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 51 | 300 SL | Bob Winkelmann | Natalie Brown | DNF |
| 1.6.1958 | SCCA Regional Dunkirk [DP+EP] | 61 | 190 SL | George Morris | | 12th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 71 | 300 SL | Carl Briggs | Carl Briggs | 19th |
| 1.6.1958 | SCCA Regional Dunkirk [DP+EP] | 77 | 190 SL | William Zeisler | | 15th |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 85 | 300 SL | Carlton Beal | Carlton Beal | DNA |
| 1.6.1958 | SCCA Regional Dunkirk [CM+DM+EM+CP] | 96 | 300 SL | Jerry Loman | | 9th |
| 1.6.1958 | GP Dunkirk | 96 | 300 SL | Jerry Loman | | 22nd |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 171 | | Bob Flet | Bob Flet | DNA |
| 1.6.1958 | Santa Barbara [BP+CP+DP] | 212 | 300 SL | Bill Atkins | Bill Atkins | 12th |
| 1.6.1958 | SCCA Regional La Junta [BM+CM+DM+EM+BP+CP+DP] | 444 | 300 SL | Russell Cowles | | 7th |
| 8.6.1958 | Preliminary Lawrenceville [BP+CP+DP+EP] | 4 | 300 SL | Roger Kahn | | ?th |
| 8.6.1958 | SCCA Regional Lawrenceville [BP+CP+DP+EP] | 4 | 300 SL | Roger Kahn | | ?th |
| 8.6.1958 | SCCA Regional Thompson [BP+CP+DP+GM] | 25 | 300 SL | Floyd Aaskov | | DNA |
| 8.6.1958 | SCCA Regional Thompson [BP+CP+DP+GM] | 55 | 300 SL | Bob Rubin | | DNA |
| 8.6.1958 | SCCA Regional Thompson [BP+CP+DP+GM] | 154 | 300 SL | Dean Mears | | DNA |
| 14.6.1958 | Preliminary Lime Rock [GT] | 54 | 300 SL | Dean Mears | | 4th |
| 14.6.1958 | Preliminary Lime Rock [GT] | 55 | 300 SL | Bob Rubin | | 5th |
| 15.6.1958 | Preliminary Laguna Seca [Production III] | 5 | 300 SL | Bob Winkelmann | | 6th |
| 15.6.1958 | SCCA Regional Laguna Seca [BP+CP+DP+EP] | 5 | 300 SL | Bob Winkelmann | | 4th |
| 15.6.1958 | SCCA National Lime Rock [BP+CP] | 54 | 300 SL | Dean Mears | | 6th |
| 15.6.1958 | SCCA National Lime Rock [BP+CP] | 55 | 300 SL | Bob Rubin | | 7th |
| 15.6.1958 | SCCA Regional Laguna Seca [BP+CP+DP+EP] | 65 | 300 SL | Bill Sturgis | | 3rd |