| 20.3.1999 | 12 h Sebring | 03 | #WP0ZZZ99ZTS398103 | Willingham / Stanton / Reiser | Reiser Callas Rennsport | 22nd |
| 20.3.1999 | 12 h Sebring | 17 | #WP0ZZZ99ZVS320611 | Conte / Lambert | Aasco Performance | 14th |
| 20.3.1999 | 12 h Sebring | 33 | #WP0ZZZ99ZSS398083 | Richter / Wlazik / Gallade | Gallade | 15th |
| 20.3.1999 | 12 h Sebring | 39 | #JLE 001 | Earle / Snyder / Ziegelman / Mitchum | Broadfoot Racing | 47th |
| 20.3.1999 | 12 h Sebring | 73 | #930 878 0564 | Wheeler / Refenning / Refenning / Vargo | Auto Sport South, Inc. | 50th |
| 28.3.1999 | FFSA GT Le Mans | 43 | | Perrier / Richard | Perspective Racing | 23rd/28th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 02 | #WP0ZZZ99ZWS398017 | Stanton / Murry | Reiser Callas Rennsport | 27th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 03 | #WP0ZZZ99ZTS398103 | Willingham / Ligonnet | Reiser Callas Rennsport | 39th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 22 | #WP0ZZZ99ZVS398069 | Fitzgerald / Havens | Alex Job Racing | 26th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 23 | #WP0ZZZ96ZPS496067 | Wagner / Müller | Alex Job Racing | 17th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 64 | #JLE 001 | Pumpelly / Lima / Ziegelman | Team Pumpelly Racing | 35th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 73 | #930 878 0564 | Refenning / Wheeler | Auto Sport South | 33rd |
| 18.4.1999 | 2 h 45 min Road Atlanta | 76 | #WP0ZZZ99ZVS398071 | Argetsinger / Polidori | Team ARE | 32nd |
| 18.4.1999 | 2 h 45 min Road Atlanta | 88 | #WP0ZZZ99ZTS398102 | Ralston / Varde | Vanderhoof Racing | 25th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 90 | #WP0ZZZ99ZRS398076 | Friedman / Miller | Millennium Motorsports | 28th |
| 25.4.1999 | SM GTR Mantorp Park | 31 | #WP0ZZZ99ZWS398024 | Micael Ljungström | Team Ferrita Racing | 10th/11th |
| 25.4.1999 | SM GTR Mantorp Park | 32 | | Niklas Loven | Bilsport & MC Specialförsäkring | 6th/6th |
| 25.4.1999 | SM GTR Mantorp Park | 34 | | Jens Tjärnlund | Jens Tjärnlund | 8th/DNS |
| 2.5.1999 | CDN GT Mosport BARC Spring | 79 | | Fernand LeBlanc | MCL | 5th |
| 2.5.1999 | Italian GT Magione | | | "Romoletto" | | DNF |
| 16.5.1999 | SM GTR Knutstorp | 31 | #WP0ZZZ99ZWS398024 | Micael Ljungström | Team Ferrita Racing | 12th/12th |
| 16.5.1999 | SM GTR Knutstorp | 32 | | Niklas Loven | Bilsport & MC Specialförsäkring | 5th/7th |
| 16.5.1999 | SM GTR Knutstorp | 34 | | Jens Tjärnlund | KMS/Kristoffersson Motorsport | 11th/15th |
| 24.5.1999 | CDN GT Mosport Trans-Am | 39 | #911 410 3631 | Rudy Bartling | | DNA |
| 24.5.1999 | CDN GT Mosport Trans-Am | 79 | | Fernand LeBlanc | | DNA |
| 30.5.1999 | SM GTR Gellerasen | 31 | #WP0ZZZ99ZWS398024 | Micael Ljungström | Team Ferrita Racing | DNF/11th |
| 30.5.1999 | SM GTR Gellerasen | 32 | | Niklas Loven | Bilsport & MC Specialförsäkring | 4th/5th |
| 30.5.1999 | SM GTR Gellerasen | 34 | | Jens Tjärnlund | KMS/Kristoffersson Motorsport | DNF/DNF |
| 31.5.1999 | 2 h 15 min Lime Rock | 01 | | Greenberg / Drew | Greycliff/Netts Racing | 15th |
| 31.5.1999 | 2 h 15 min Lime Rock | 3 | #0755 | Peter Kitchak | Toad Hall Motor Racing | DNS |
| 31.5.1999 | 2 h 15 min Lime Rock | 64 | #JLE 001 | Pumpelly / Rehm | Spencer Pumpelly Racing | 13th |
| 31.5.1999 | 2 h 15 min Lime Rock | 90 | #WP0ZZZ99ZRS398076 | Friedman / Wagner | Millennium Motorsports | 12th |
| 6.6.1999 | 2 h 15 min Mid-Ohio | 01 | | Drew / Greenberg | Greycliff/Nettts Racing | DNA |
| 6.6.1999 | 2 h 15 min Mid-Ohio | 02 | #WP0ZZZ99ZWS398017 | Murry / Mowlem | Reiser/Callas Rennsport | 6th |
| 6.6.1999 | 2 h 15 min Mid-Ohio | 03 | #WP0ZZZ99ZTS398103 | Reiser / Stanton | Reiser/Callas Rennsport | 10th |
| 6.6.1999 | 2 h 15 min Mid-Ohio | 07 | #GW001 | Wagner / Law | G&W Motorsports | 7th |
| 6.6.1999 | 2 h 15 min Mid-Ohio | 3 | #0755 | Peter Kitchak | Toad Hall Motor Racing | DNS |
| 6.6.1999 | Italian GT Vallelunga | 33 | | "Romoletto" | | 1st |
| 6.6.1999 | 2 h 15 min Mid-Ohio | 64 | #JLE 001 | Pumpelly / Rehm | Spencer Pumpelly Racing | 11th |
| 13.6.1999 | 24 h Le Mans | | | Schirle / Warnock | Cirtek/Roock Racing | DNA |
| 20.6.1999 | SM GTR Anderstorp | 31 | #WP0ZZZ99ZWS398024 | Micael Ljungström | Team Ferrita Racing | 15th/9th |
| 20.6.1999 | SM GTR Anderstorp | 32 | | Niklas Loven | Bilsport & MC Specialförsäkring | DNF/7th |
| 20.6.1999 | SM GTR Anderstorp | 34 | | Jens Tjärnlund | KMS/Kristoffersson Motorsport | DNS |
| 27.6.1999 | 2 h 45 min Mosport | 02 | #WP0ZZZ99ZWS398017 | Mowlem / Stanton | Reiser Callas Rennsport | 24th |
| 27.6.1999 | 2 h 45 min Mosport | 03 | #WP0ZZZ99ZTS398103 | Willingham / Reiser | Reiser Callas Rennsport | 22nd |
| 27.6.1999 | 2 h 45 min Mosport | 17 | #WP0ZZZ99ZVS320611 | Conte | GT Contemporary Motorsports | 32nd |
| 27.6.1999 | 2 h 45 min Mosport | 22 | #WP0ZZZ99ZVS398069 | Havens / Fitzgerald | Alex Job Racing | 23rd |
| 27.6.1999 | 2 h 45 min Mosport | 23 | #WP0ZZZ96ZPS496067 | Wagner / Müller | Alex Job Racing | 16th |
| 27.6.1999 | CDN GT Shannonville Trilllium Trophy | 39 | #911 410 3631 | Bartling / Franczak | | 6th |
| 27.6.1999 | 2 h 45 min Mosport | 76 | #WP0ZZZ99ZVS398071 | Argetsinger / Polidori | Team ARE | 27th |
| 27.6.1999 | 2 h 45 min Mosport | 90 | #WP0ZZZ99ZRS398076 | Friedman / Fastenings | Millennium Motorsports | DNA |
| 4.7.1999 | GTR Oslo | 31 | #WP0ZZZ99ZWS398024 | Micael Ljungström | Team Ferrita Racing | 7th/5th |
| 4.7.1999 | GTR Oslo | 34 | | Jens Tjärnlund | KMS | 6th/4th |
| 11.7.1999 | CDN GT Shannonville Canaska Cup | 39 | #911 410 3631 | Bartling / Franczak | | 7th |
| 18.7.1999 | SM GTR Falkenberg | 31 | #WP0ZZZ99ZWS398024 | Micael Ljungström | Team Ferrita Racing | 10th/12th |
| 18.7.1999 | SM GTR Falkenberg | 32 | | Niklas Loven | Bilsport & MC Specialförsäkring | 9th/7th |
| 18.7.1999 | SM GTR Falkenberg | 34 | | Jens Tjärnlund | KMS/Kristoffersson Motorsport | 12th/10th |
| 18.7.1999 | Italian GT Misano | | | "Romoletto" | | DNS |
| 25.7.1999 | 2 h 45 min Sears Point | 02 | #WP0ZZZ99ZWS398017 | Bundy / Murry | Reiser Callas Rennsport | 29th |
| 25.7.1999 | 2 h 45 min Sears Point | 03 | #WP0ZZZ99ZTS398103 | Stanton / Reiser / Willingham | Reiser Callas Rennsport | 31st |
| 25.7.1999 | 2 h 45 min Sears Point | 17 | #WP0ZZZ99ZVS320611 | Conte / Lambert | Contemporary Motorsports | 37th |
| 25.7.1999 | 2 h 45 min Sears Point | 22 | #WP0ZZZ96ZPS496067 | Fitzgerald / Havens | Alex Job Racing | 27th |
| 25.7.1999 | 2 h 45 min Sears Point | 24 | #WP0ZZZ99ZVS398069 | Pobst / Kelly | Alex Job Racing | 28th |
| 25.7.1999 | 2 h 45 min Sears Point | 67 | #3100217 | Trenery / Schrom | The Racers Group | 34th |
| 25.7.1999 | 2 h 45 min Sears Point | 68 | #01 00044 | Buckler / Rice | The Racers Group | 30th |
| 25.7.1999 | 2 h 45 min Sears Point | 76 | #WP0ZZZ99ZVS398071 | Sobrero | Team ARE | 41st |
| 25.7.1999 | CDN GT Mont-Tremblant | 79 | | Fernand LeBlanc | MCL | 8th |
| 25.7.1999 | 2 h 45 min Sears Point | 88 | #WP0ZZZ99ZTS398102 | Varde / Ralston | Vanderhoof Racing | 35th |
| 25.7.1999 | 2 h 45 min Sears Point | 90 | #WP0ZZZ99ZRS398076 | David Friedman | Millennium Motorsports | DNA |
| 1.8.1999 | 2 h 45 min Portland | 02 | #WP0ZZZ99ZWS398017 | Bundy / Murry | Reiser Callas Rennsport | 22nd |
| 1.8.1999 | 2 h 45 min Portland | 03 | #WP0ZZZ99ZTS398103 | Stanton / Willingham / Reiser | Reiser Callas Rennsport | 27th |
| 1.8.1999 | 2 h 45 min Portland | 17 | #WP0ZZZ99ZVS320611 | Lambert / Varde | Contemporary Motorsports | 21st |
| 1.8.1999 | 2 h 45 min Portland | 22 | #WP0ZZZ99ZVS398069 | Havens / Fitzgerald | Alex Job Racing | 24th |
| 1.8.1999 | 2 h 45 min Portland | 24 | #WP0ZZZ96ZPS496067 | Pobst / Kitch | Alex Job Racing | 26th |
| 1.8.1999 | SM GTR Anderstorp | 31 | #WP0ZZZ99ZWS398024 | Micael Ljungström | Team Ferrita Racing | 11th/7th |
| 1.8.1999 | SM GTR Anderstorp | 32 | | Niklas Loven | Bilsport & MC Specialförsäkring | 7th/5th |
| 1.8.1999 | SM GTR Anderstorp | 34 | | Jens Tjärnlund | KMS/Kristoffersson Motorsport | 12th/10th |
| 1.8.1999 | 2 h 45 min Portland | 67 | #3100217 | Wolfkill | The Racers Group | 42nd |
| 1.8.1999 | 2 h 45 min Portland | 68 | #01 00044 | Rice / Trenery | The Racers Group | 25th |
| 1.8.1999 | 2 h 45 min Portland | 76 | #WP0ZZZ99ZVS398071 | | Team ARE | unused |
| 1.8.1999 | 2 h 45 min Portland | 88 | #WP0ZZZ99ZTS398102 | Ralston / Varde / Trejos | Vanderhoof Racing | DNA |
| 1.8.1999 | 2 h 45 min Portland | 90 | #WP0ZZZ99ZRS398076 | David Friedman | Millennium Motorsports | DNA |
| 1.8.1999 | Italian GT Varano | | | "Romoletto" | | 2nd |
| 7.8.1999 | Special GT Cup Fuji | 55 | | Suga / Tajima | Team Taisan Jr. | 24th |
| 15.8.1999 | SM GTR Arctic Circle | 31 | #WP0ZZZ99ZWS398024 | Micael Ljungström | Team Ferrita Racing | 8th/6th |
| 15.8.1999 | SM GTR Arctic Circle | 32 | | Niklas Loven | Bilsport & MC Specialförsäkring | DNA |
| 15.8.1999 | SM GTR Arctic Circle | 34 | | Jens Tjärnlund | KMS/Kristoffersson Motorsport | 7th/5th |
| 22.8.1999 | 1000 km Suzuka | 9 | | Hioki / Takahashi / Souda | Team Daikokuya | 12th |
| 29.8.1999 | SM GTR Mantorp Park | 31 | #WP0ZZZ99ZWS398024 | Micael Ljungström | Team Ferrita Racing | 9th/6th |
| 29.8.1999 | SM GTR Mantorp Park | 32 | | Niklas Loven | Bilsport & MC Specialförsäkring | 10th/7th |
| 29.8.1999 | SM GTR Mantorp Park | 34 | | Jens Tjärnlund | KMS/Kristoffersson Motorsport | 11th/DNF |
| 29.8.1999 | CDN GT Mosport CASCAR | 39 | #911 410 3631 | Brezinka / Franczak | | 10th |
| 5.9.1999 | CDN GT Mosport CRDA | 39 | #911 410 3631 | Bartling / Franczak | | 10th |
| 18.9.1999 | Petit Le Mans | 03 | #WP0ZZZ99ZTS398103 | Stanton / Willingham / Reiser | Reiser Callas Rennsport | 22nd |
| 18.9.1999 | Petit Le Mans | 07 | #GW001 | Hall / Marshall / Marshall / Lux | G&W Motorsports | 24th |
| 18.9.1999 | Petit Le Mans | 17 | #WP0ZZZ99ZVS320611 | Lambert / Conte | Contemporary Motorsports | 20th |
| 18.9.1999 | Petit Le Mans | 22 | #WP0ZZZ99ZVS398069 | Pobst / Fitzgerald | Alex Job Racing | 47th |
| 18.9.1999 | Petit Le Mans | 64 | #JLE 001 | Pumpelly | Spencer Pumpelly Racing | 49th |
| 18.9.1999 | Petit Le Mans | 70 | #WP0ZZZ99ZTS398096 | Gabel / de Quesada | Alegra Motorsports | 43rd |
| 18.9.1999 | Petit Le Mans | 73 | #930 878 0564 | Refenning / Ziegelman / Wheeler / Lima | Auto Sport South Racing | 42nd |