| 10.1.1999 | Daytona Test | 01 | #WP0ZZZ99ZRS398076 | Greenberg / Drew / Nelson / Peter | Greycliff Racing | 45th |
| 10.1.1999 | Daytona Test | 02 | #WP0ZZZ99ZWS398017 | Reiser / Mowlem / Willingham / Murry | Reiser/Callas Rennsport | 41st |
| 10.1.1999 | Daytona Test | 04 | #WP0ZZZ99ZVS398074 | Schmidt / Conkel / Schmidt | Schmidt Motorsports | 50th |
| 10.1.1999 | Daytona Test | 39 | #JLE 001 | Kicak / Pumpelly / Mitchum / Kimbrough | Pumpelly/Mitchum Motorsports | 54th |
| 10.1.1999 | Daytona Test | 58 | #WP0ZZZ99ZVS398064 | Petersen / White / Cilli / Ruther / Miller | Petersen Motorsports | 51st |
| 10.1.1999 | Daytona Test | 69 | #WP0ZZZ99ZWS398027? | Perrier / Ricci / Richard | Perspective Racing | DNA |
| 10.1.1999 | Daytona Test | 73 | #930 878 0564 | Lewis / Wheeler | Jack Lewis Enterprises | 56th |
| 10.1.1999 | Daytona Test | 76 | #WP0ZZZ99ZVS398071 | Argetsinger / Polidori / Hill / McCaig | Team A.R.E. | 43rd |
| 10.1.1999 | Daytona Test | 86 | | Marshall / Marshall | G & W Motorsports | 53rd |
| 31.1.1999 | 24 h Daytona | 01 | #WP0ZZZ99ZRS398076 | Nelson | Greycliff Racing | 77th |
| 31.1.1999 | 24 h Daytona | 02 | #WP0ZZZ99ZWS398017 | Murry / Mowlem / Reiser / Willingham | Reiser/Callas Rennsport | 9th |
| 31.1.1999 | 24 h Daytona | 04 | #WP0ZZZ99ZVS398074 | Schmidt / Conkel / Schmidt | Schmidt Motorsports | 48th |
| 31.1.1999 | 24 h Daytona | 9 | #0755 | Peter Kitchak | Toad Hall Motor Racing | DNA |
| 31.1.1999 | 24 h Daytona | 22 | #WP0ZZZ99ZVS398069 | Kitch / Wolfkill / Hill / Gaughran | Alex Job Racing | 51st |
| 31.1.1999 | 24 h Daytona | 23 | #WP0ZZZ96ZPS496067 | Collins / Wagner / Lazzaro / Havens | Alex Job Racing | 6th |
| 31.1.1999 | 24 h Daytona | 25 | #WP0ZZZ99ZSS390075 | Hofer | RWS-Brun Motorsport | 73rd |
| 31.1.1999 | 24 h Daytona | 39 | #JLE 001 | Pumpelly / Mitchum / Kicak / Lester / Dro | Pumpelly/Mitchum Motorsports | 27th |
| 31.1.1999 | 24 h Daytona | 56 | #WP0ZZZ99ZSS398083 | Willems / Manthey / Gindorf / Gallade / Richter | Manthey Racing | 45th |
| 31.1.1999 | 24 h Daytona | 58 | #WP0ZZZ99ZVS398064 | Cilli | Petersen Racing | 72nd |
| 31.1.1999 | 24 h Daytona | 67 | #3100217 | Pelke / Pelke / Herrerias / DiGiovanni | The Racers Group | 54th |
| 31.1.1999 | 24 h Daytona | 68 | #01 00044 | Buckler / Conte / Holt / Lambert | The Racers Group | 14th |
| 31.1.1999 | 24 h Daytona | 69 | #WP0ZZZ99ZWS398027? | Wollek | Perspective Racing | 76th |
| 31.1.1999 | 24 h Daytona | 73 | #930 878 0564 | Wheeler / Lewis / Manfredi / Takahashi / Henriksen | Jack Lewis Enterprises/Autosport South | 29th |
| 31.1.1999 | 24 h Daytona | 76 | #WP0ZZZ99ZVS398071 | Argetsinger / Polidori / Hill / McCaig | Team A.R.E. | 52nd |
| 31.1.1999 | 24 h Daytona | 86 | | Marshall / Marshall | G&W Motorsports | DNA |
| 31.1.1999 | 24 h Daytona | 92 | #WP0ZZZ99ZTS398103 | Mowlem | Reiser/Callas Rennsport | 74th |
| 20.3.1999 | 12 h Sebring | 02 | #WP0ZZZ99ZWS398017 | Murry / Mowlem | Reiser Callas Rennsport | 34th |
| 20.3.1999 | 12 h Sebring | 03 | #WP0ZZZ99ZTS398103 | Willingham / Stanton / Reiser | Reiser Callas Rennsport | 22nd |
| 20.3.1999 | 300 km Suzuka | 9 | | Hane / Tokuda | Team Daikokuya | DNF |
| 20.3.1999 | 12 h Sebring | 17 | #WP0ZZZ99ZVS320611 | Conte / Lambert | Aasco Performance | 14th |
| 20.3.1999 | 12 h Sebring | 22 | #WP0ZZZ99ZVS398069 | Pobst / Fitzgerald / MacNeil | Alex Job Racing | 13th |
| 20.3.1999 | 12 h Sebring | 23 | #WP0ZZZ96ZPS496067 | Collins / Wagner / Havens | Alex Job Racing | 11th |
| 20.3.1999 | 12 h Sebring | 25 | #WP0ZZZ99ZSS390075 | Hofer / Riccitelli / Blieninger / Jodexnis | RWS Motorsport | DNS |
| 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 | 70 | #WP0ZZZ99ZTS398096 | Gabel / de Quesada / Colombo | Alegra Motorsport | 24th |
| 20.3.1999 | 12 h Sebring | 73 | #930 878 0564 | Wheeler / Refenning / Refenning / Vargo | Auto Sport South, Inc. | 50th |
| 20.3.1999 | 12 h Sebring | 76 | #WP0ZZZ99ZVS398071 | Argetsinger / Polidori | Team ARE | 56th |
| 20.3.1999 | 12 h Sebring | 88 | #WP0ZZZ99ZTS398102 | Varde / Ralston / Alexander | Vanderhoof Racing | 51st |
| 20.3.1999 | 300 km Suzuka | 99 | | Yoshitomi / Hioki | Team Daikokuya | 27th |
| 20.3.1999 | 300 km Suzuka | 910 | | Yogo / Tamamoto | 910 Racing | 15th |
| 27.3.1999 | GT Monza | 44 | | Franco Buganè | | 10th |
| 28.3.1999 | FFSA GT Le Mans | 43 | | Perrier / Richard | Perspective Racing | 23rd/28th |
| 28.3.1999 | FFSA GT Le Mans | 56 | | Ricci / Ortion | "Raymond" (Touroul) | 20th/13th |
| 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 | Belcar Zolder NRF | 9 | | Sluyters / Buytaert | TR Racing | 19th |
| 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 | 25 | | Fredrik Sundberg | Giraffen Racing | 3rd/7th |
| 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 | Belcar Spa SFD | 9 | | Sluyters / Buytaert | TR Racing | DNF |
| 2.5.1999 | CDN GT Mosport BARC Spring | 79 | | Fernand LeBlanc | MCL | 5th |
| 2.5.1999 | Prequalifying Le Mans | 83 | #WP0ZZZ99ZTS393093 | Neugarten / MacQuillan / Westwood | Gérard MacQuillan | 51st |
| 2.5.1999 | Prequalifying Le Mans | 84 | #WP0ZZZ99ZWS398027 | Perrier / Ricci | Perspective Racing | 50th |
| 2.5.1999 | All Japan GT Fuji | 99 | | Yoshitomi / Hioki | Team Daikokuya | 22nd |
| 2.5.1999 | All Japan GT Fuji | 910 | | Yogo / Tamamoto | 910 Racing | 20th |
| 2.5.1999 | Italian GT Magione | | | "Romoletto" | | DNF |
| 15.5.1999 | 2 h Monza | 44 | | Franco Buganè | | 8th |
| 16.5.1999 | SM GTR Knutstorp | 25 | | Fredrik Sundberg | Giraffen Racing | 4th/4th |
| 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 | Belcar Zandvoort | 9 | | Sluyters / Buytaert | TR Racing | DNF |
| 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 | Sugo GT | 9 | | Hane / Tokuda | Team Daikokuya | 25th |
| 30.5.1999 | SM GTR Gellerasen | 25 | | Fredrik Sundberg | Team Motorbörsen/4 Sale | 5th/7th |
| 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 |
| 30.5.1999 | Sugo GT | 99 | | Yoshitomi / Takahashi | Team Daikokuya | 29th |
| 30.5.1999 | Sugo GT | 910 | | Yogo / Tamamoto | 910 Racing | 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 | Belcar Spa SER | 9 | | Sluyters / Buytaert | TR Racing | DNF |
| 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 |
| 6.6.1999 | Italian GT Vallelunga | | | Alex Dazzan | | 3rd |
| 13.6.1999 | 24 h Le Mans | 83 | #WP0ZZZ99ZTS393093 | MacQuillan / Neugarten / Gleason | Gérard MacQuillan | DNQ |
| 13.6.1999 | 24 h Le Mans | 84 | #WP0ZZZ99ZWS398027 | Perrier / Ricci / Nourry | Perspective Racing | 21st |
| 13.6.1999 | 24 h Le Mans | | | Schirle / Warnock | Cirtek/Roock Racing | DNA |
| 20.6.1999 | SM GTR Anderstorp | 25 | | Fredrik Sundberg | Team Motorbörsen/4 Sale | 9th/4th |
| 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 |