| 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 | 9 | #0755 | Kitchak / Heger | Toad Hall Motor Racing | 39th |
| 10.1.1999 | Daytona Test | 22 | #WP0ZZZ99ZVS398069 | Kitch / Wolfkill / Hill / Gaughran | Alex Job Racing | 40th |
| 10.1.1999 | Daytona Test | 23 | #WP0ZZZ96ZPS496067 | Havens / Wagner / Collins / Lazzaro | Alex Job Racing | 32nd |
| 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 | 67 | #3100217 | Pelke / Pelke / Takahashi / Herrerias | The Racers Group | 47th |
| 10.1.1999 | Daytona Test | 68 | #01 00044 | Buckler / Conte / Holt / Lambert | The Racers Group | 36th |
| 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 | 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 | 70 | #WP0ZZZ99ZTS398096 | Gabel / de Quesada / Colombo | Alegra Motorsport | 24th |
| 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 |