| 10.1.1999 | Daytona Test | 08 | | Konig / Ulrich / Chambers / Wilson | G & W Motorsports | 27th |
| 10.1.1999 | Daytona Test | 21 | #WP0ZZZ99ZTS393085 | Rosa / Rosa / Mangifesta / Zonca | Haberthur Racing | 49th |
| 10.1.1999 | Daytona Test | 31 | | Casadei / Garbagnati / Bucci / Ciani | Haberthur Racing | 30th |
| 10.1.1999 | Daytona Test | 77 | | Nearn / Muenz / Burgess / Bagnall | Seikel Motorsport | 24th |
| 10.1.1999 | Daytona Test | 82 | #98 RST 530 001 | Ortelli / Hürtgen | Roock Racing | 16th |
| 10.1.1999 | Daytona Test | 99 | #WP0ZZZ99ZTS393104 | Schumacher / O'Steen / Müller / Snow | Schumacher Racing | 20th |
| 31.1.1999 | 24 h Daytona | 07 | | Law / Marshall / Huisman / Tremblay / Marshall | G&W Motorsports | 11th |
| 31.1.1999 | 24 h Daytona | 08 | #WP0ZZZ99ZTS394067 | Wilson / Konig / Ulrich / Pickup | G&W Motorsports | 70th |
| 31.1.1999 | 24 h Daytona | 21 | #WP0ZZZ99ZTS393085 | Rosa / Mangifesta / Zonca / Rosa | Haberthur Racing | 68th |
| 31.1.1999 | 24 h Daytona | 31 | | Casadei | Haberthur Racing | 75th |
| 31.1.1999 | 24 h Daytona | 33 | #WP0ZZZ99ZTS394063 | Heger / Kitchak / Slater / Konrad | Konrad Motorsport | 40th |
| 31.1.1999 | 24 h Daytona | 48 | #0840013 | Kaufmann / Ligonnet / Stewart | Freisinger Motorsport | 44th |
| 31.1.1999 | 24 h Daytona | 49 | #0480056 | Irmgratz / Jurasz / van de Vyver / Horn | Freisinger Motorsport | 20th |
| 31.1.1999 | 24 h Daytona | 55 | #WP0ZZZ99ZTS394065 | Seiler / Ried / Vuillaume / Ruch | Proton Competition | 34th |
| 31.1.1999 | 24 h Daytona | 77 | | Bagnall / Mastropietro / Burgess / Neugarten | Seikel Motorsport | 19th |
| 31.1.1999 | 24 h Daytona | 82 | #98 RST 530 001 | Ortelli / Bertaggia / Hürtgen / Nearn | Roock Racing | 25th |
| 31.1.1999 | 24 h Daytona | 83 | #98 RST 530 003 | Ahrlé / Sangiuolo / Warnock / Haupt | Roock Racing | 7th |
| 31.1.1999 | 24 h Daytona | 99 | #WP0ZZZ99ZTS393104 | Snow / Müller / O'Steen / Schumacher | Schumacher Racing | 10th |
| 20.3.1999 | 12 h Sebring | 04 | #WP0ZZZ99ZWS393001 | Morton / Graham / Jones | CJ Motorsport | 28th |
| 20.3.1999 | 12 h Sebring | 07 | | Tremblay / Marshall / Marshall / Law | G&W Motorsports | 18th |
| 20.3.1999 | 300 km Suzuka | 10 | | Asou / Hinoi | Ability Motorsports | DNQ |
| 20.3.1999 | 12 h Sebring | 48 | #0840013 | Kaufmann / Ligonnet / Stewart | Freisinger Motorsport | 10th |
| 20.3.1999 | 12 h Sebring | 49 | #0480056 | Irmgratz / Jurasz / Creger | Freisinger Motorsport | 27th |
| 20.3.1999 | 12 h Sebring | 56 | #WP0ZZZ99ZTS393079 | Snow / Snow / Huisman | Martin Snow Racing | 9th |
| 20.3.1999 | 12 h Sebring | 61 | #WP0ZZZ99ZTS394063 | Slater / Kitchak / Hezemans | Konrad Motorsport | 16th |
| 20.3.1999 | 300 km Suzuka | 70 | | Ishibashi / van Schoote | Team Gaikokuya | 22nd |
| 20.3.1999 | 300 km Suzuka | 71 | | Jounai / Kawano | Sigmatec Racing Team | DQ |
| 20.3.1999 | 12 h Sebring | 71 | #00024 | Pilla / Mazzuoccola | DM Motorsports | 57th |
| 20.3.1999 | 12 h Sebring | 83 | #98 RST 530 002 | Hürtgen / Haupt / Brown | ARBJH Development | 39th |
| 20.3.1999 | 12 h Sebring | 99 | #WP0ZZZ99ZTS393104 | Nearn / Schumacher | Schumacher Racing | 53rd |
| 27.3.1999 | GT Monza | 2 | #WP0ZZZ99ZTS393107 | Ruggero Grassi | | 1st |
| 27.3.1999 | GT Monza | 3 | | Anssi Muenz | | 2nd |
| 27.3.1999 | GT Monza | 4 | | Massimo Frigerio | | DNF |
| 28.3.1999 | FFSA GT Le Mans | 1 | #WP0ZZZ99ZWS393012 | Jarier / Guitteny | Sonauto-Levallois | 2nd/3rd |
| 28.3.1999 | FFSA GT Le Mans | 2 | | Lagniez / Goueslard | Larbre Compétition | 1st/44th |
| 28.3.1999 | FFSA GT Le Mans | 4 | | Sourd / Bervillé | Alméras Fréres | 8th/7th |
| 28.3.1999 | FFSA GT Le Mans | 5 | | Favre / Pouly | "Aimé" | 6th/4th |
| 28.3.1999 | FFSA GT Le Mans | 6 | | Cyril Chateau | Chateau System | 3rd/43rd |
| 28.3.1999 | FFSA GT Le Mans | 7 | #WP0ZZZ99ZTS393103 | Herbert / Nourry | "Michel" | 42nd/DNS |
| 28.3.1999 | FFSA GT Le Mans | 9 | | Eschmann / Hulverscheid | Manthey Racing | 9th/10th |
| 28.3.1999 | FFSA GT Le Mans | 10 | #WP0ZZZ99ZTS393095 | Simmenauer / Maisonneuve | 917 Racing Team | 4th/6th |
| 28.3.1999 | FFSA GT Le Mans | 14 | #WP0ZZZ99ZTS394075 | Monteiro / Monteiro | Estoril Racing Team | 7th/5th |
| 28.3.1999 | British GT Silverstone | 32 | | Warnock / Hürtgen | Cirtek Motorsport | 8th |
| 28.3.1999 | British GT Silverstone | 33 | #WP0ZZZ99ZWS393003 | Saunders / Day | Gaumont/Parr Motorsport | 7th |
| 28.3.1999 | British GT Silverstone | 40 | | Robinson / Cook | Point Preparations | 12th |
| 28.3.1999 | British GT Silverstone | 44 | #WP0ZZZ99ZTS393067 | Fothergill / Fuller | PK Sport | 10th |
| 11.4.1999 | 500 km Monza [GT] | 3 | #043005 | Ortelli / Hürtgen | Roock Racing | 8th |
| 11.4.1999 | 500 km Monza [GT] | 4 | #1463892 | Haupt / Ahrlé | Roock Racing | 11th |
| 11.4.1999 | 500 km Monza [GT] | 5 | #043033 | Eschmann / Price / Robinson | Roock Sportsystem | 21st |
| 11.4.1999 | 500 km Monza [GT] | 6 | #WP0ZZZ99ZTS393076 | Wollek / Konrad | Konrad Motorsport | 15th |
| 11.4.1999 | 500 km Monza [GT] | 7 | | Altfrid Heger | Konrad Motorsport | DNA |
| 11.4.1999 | 500 km Monza [GT] | 8 | #WP0ZZZ99ZWS393011 | Neugarten / Salvarini / Cappellari | Haberthur Racing | 7th |
| 11.4.1999 | 500 km Monza [GT] | 9 | #WP0ZZZ99ZTS393085 | Bucci / Garbagnati / Casadei | Haberthur Racing | 14th |
| 11.4.1999 | 500 km Monza [GT] | 15 | #0840013 | Kaufmann / Ligonnet | Freisinger Motorsport | 3rd |
| 11.4.1999 | 500 km Monza [GT] | 16 | #0480098 | Jurasz / Lintott | Freisinger Motorsport | 19th |
| 11.4.1999 | 500 km Monza [GT] | 17 | | Seiler / Rohr | Stadler Motorsport | DNA |
| 11.4.1999 | 500 km Monza [GT] | 20 | | Barta / Ratkai / Bodis | Bovi Motorsport | 20th |
| 11.4.1999 | 500 km Monza [GT] | 23 | | Piattier / Werner | Paul Belmondo Racing | DNA |
| 11.4.1999 | 500 km Monza [GT] | 24 | #WP0ZZZ99TS393084 | Felbermayr / Felbermayr, Jr. | RWS Motorsport | 12th |
| 11.4.1999 | 500 km Monza [GT] | 26 | #WP0ZZZ99ZTS393107 | Muenz / Grassi | Ruggero Grassi | 16th |
| 11.4.1999 | 500 km Monza [GT] | 28 | | Babini / Frigerio | Ebimotors | DNF |
| 11.4.1999 | 500 km Monza [GT] | 29 | #WP0ZZZ99ZTS393082 | Spinelli / Sabatini / Villa | Autorlando | 9th |
| 11.4.1999 | 500 km Monza [GT] | 69 | #WP0ZZZ99ZTS394065 | Ried / Ried / Vuillaume | Proton Competition | DNF |
| 11.4.1999 | 500 km Monza [GT] | 77 | #WP0ZZZ99ZTS393088 | Palmberger / Smith / Nearn | Seikel Motorsport | 10th |
| 11.4.1999 | 500 km Monza [GT] | 78 | #WP0ZZZ99ZTS393074 | Mastropietro / Sangiuolo / Padovani | Seikel Motorsport | 17th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 04 | #WP0ZZZ99ZWS393001 | Morton / Graham | CJ Motosports | 23rd |
| 18.4.1999 | 2 h 45 min Road Atlanta | 07 | | Marshall / Marshall / Law | G&W Motorsports | DNS |
| 18.4.1999 | Belcar Zolder NRF | 4 | #0460003 | Kumpen / Cohen | GLPK Racing | 1st |
| 18.4.1999 | Belcar Zolder NRF | 8 | | Verheyen / Bruynoghe | TR Racing | 3rd |
| 18.4.1999 | Belcar Zolder NRF | 15 | | Raes / Meulders | Raes Racing | 25th |
| 18.4.1999 | Belcar Zolder NRF | 21 | | Van Campenhoudt / de Groodt | PSi Motorsport | DNA |
| 18.4.1999 | Belcar Zolder NRF | 24 | | Van de Wauwer / Schoonbroodt | SG Racing | DNF |
| 18.4.1999 | Belcar Zolder NRF | 39 | | Vollebergh / de Kerckhove | Raes Racing | DNA |
| 18.4.1999 | Belcar Zolder NRF | 44 | | Jaak Janssen | | DNA |
| 18.4.1999 | 2 h 45 min Road Atlanta | 56 | #WP0ZZZ99ZTS393079 | Snow / Collins | Martin Snow Racing | 13th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 61 | #WP0ZZZ99ZTS394063 | Konrad / Kitchak | Konrad Motorsport | 15th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 83 | #98 RST 530 002 | Brown / Pilgrim | Chiefie Motorsports | 36th |
| 18.4.1999 | 2 h 45 min Road Atlanta | 99 | #WP0ZZZ99ZTS393104 | Schumacher / O'Steen | Schumacher Racing | 12th |