| 12.7.1998 | 500 km Dijon | 57 | | Maassen / Eichmann | Roock Racing | 14th |
| 12.7.1998 | 500 km Dijon | 58 | #98 RST 530 003 | Ahrlé / Prutirat | Roock Sportsystem | 19th |
| 12.7.1998 | 500 km Dijon | 60 | #WP0ZZZ99ZWS393011? | Neugarten / Ruch / Spinelli | Elf Haberthur Racing | 24th |
| 12.7.1998 | 500 km Dijon | 61 | | Graham / Poulain / Smadja | Elf Haberthur Racing | 22nd |
| 12.7.1998 | 500 km Dijon | 62 | | Rohr / Sick | Stadler Motorsport | 18th |
| 12.7.1998 | 500 km Dijon | 63 | #WP0ZZZ99ZTS394071 | Trunk / Müller | Krauss Race Sports International | 15th |
| 12.7.1998 | 500 km Dijon | 65 | | Stretton / Seiler | Konrad Motorsport | 26th |
| 12.7.1998 | 500 km Dijon | 66 | | Sallaz / Konrad | Konrad Motorsport | 13th |
| 12.7.1998 | 500 km Dijon | 69 | #WP0ZZZ99ZTS394065 | Ried / Vuillaume | Proton Competition | 21st |
| 12.7.1998 | 500 km Dijon | 75 | | Cohen-Olivar / Schwach / Gay / Constantin | Swiss Team Salamin | DNA |
| 12.7.1998 | 500 km Dijon | 76 | | Schwach / Seikel / Rosterg | Seikel Motorsport | DNF |
| 12.7.1998 | 500 km Dijon | 77 | #WP0ZZZ99ZWS393002 | Jarier / Lafon | Sonauto Levallois | 12th |
| 12.7.1998 | CDN GT Shannonville Canaska Cup | 91 | #WP0ZZZ99ZTS394062 | Harry Bytzek | | 2nd |
| 12.7.1998 | 500 km Dijon | 96 | | Felbermayr / Felbermayr, Jr. | Proton Competition | 17th |
| 12.7.1998 | 500 km Dijon | | #WP0ZZZ99ZTS394075 | | Estoril Racing Team | DNA |
| 19.7.1998 | 4 h Nürburgring | 9 | #WP0ZZZ99ZTS394069 | Lister / Beaverbroock / Greasley | BVB Motorsport Ltd. | 2nd |
| 19.7.1998 | 4 h Nürburgring | 26 | | Gay / Cohen-Olivar / Ameur | Swiss Team Salamin | DNA |
| 19.7.1998 | 4 h Nürburgring | 27 | #WP0ZZZ99ZTS393095 | Jarier / Lagniez / Lafon | Sonauto Levallois | DNA |
| 19.7.1998 | 4 h Nürburgring | 28 | #WP0ZZZ99ZTS393107 | Smith / Palmberger / Quargentan | Seikel Motorsport | DNA |
| 19.7.1998 | 4 h Nürburgring | 29 | #WP0ZZZ99ZTS394075 | Monteiro / Monteiro | Estoril Racing | DNA |
| 19.7.1998 | 4 h Nürburgring | 32 | | Pagotto / Giribaldi | Luigino Pagotto | DNA |
| 19.7.1998 | 4 h Nürburgring | 33 | #0460003 | Margueron / Kumpen / Cohen | GLPK Racing | 3rd |
| 19.7.1998 | 4 h Nürburgring | 35 | #0480098 | Kaufmann / Ligonnet | Freisinger Motorsport | 1st |
| 19.7.1998 | 4 h Nürburgring | 37 | #WP0ZZZ99ZTS393082 | Buttiero / Mastropietro / Sangiuolo | RWS Brun Motorsport | DNF |
| 19.7.1998 | 4 h Nürburgring | 46 | | Rostan / Piattier / Werner | Paul Belmondo Racing | 5th |
| 19.7.1998 | 500 km Hungaroring | 56 | | Ortelli / Hürtgen | Roock Racing | DNF |
| 19.7.1998 | 500 km Hungaroring | 57 | | Eichmann / Maassen | Roock Racing | 6th |
| 19.7.1998 | 500 km Hungaroring | 58 | #98 RST 530 003 | Ahrlé / Prutirat | Roock Sportsystem | 11th |
| 19.7.1998 | 500 km Hungaroring | 60 | #WP0ZZZ99ZWS393011? | Neugarten / Ruch / Spinelli | Elf Haberthur Racing | 9th |
| 19.7.1998 | 500 km Hungaroring | 61 | | Faehler / Jodexnis / Casadei | Elf Haberthur Racing | DNF |
| 19.7.1998 | 500 km Hungaroring | 62 | | Sick / Rohr | Stadler Motorsport | 13th |
| 19.7.1998 | 500 km Hungaroring | 63 | #WP0ZZZ99ZTS394071 | Trunk / Müller | Krauss Race Sports International | 10th |
| 19.7.1998 | 500 km Hungaroring | 65 | | Stretton / Seiler | Konrad Motorsport | DNF |
| 19.7.1998 | 500 km Hungaroring | 66 | | Heger / Konrad | Konrad Motorsport | DNF |
| 19.7.1998 | 500 km Hungaroring | 69 | #WP0ZZZ99ZTS394065 | Vuillaume / Ried | Proton Competition | 14th |
| 19.7.1998 | 500 km Hungaroring | 75 | | Constantin / Cohen-Olivar / Gay | Swiss Team Salamin | DNA |
| 19.7.1998 | 500 km Hungaroring | 76 | #WP0ZZZ99ZTS393107 | Smith / Palmberger / Nearn | Seikel Motorsport | 12th |
| 19.7.1998 | 500 km Hungaroring | 78 | | Bodis / Brada / Jerish | Bovi Motorsport | DNF |
| 19.7.1998 | 500 km Hungaroring | 96 | | Felbermayr / Felbermayr, Jr. | Proton Competition | 15th |
| 26.7.1998 | 4 h Spa | 9 | #WP0ZZZ99ZTS394069 | Beaverbroock / Lister / Greasley | BVB | 2nd |
| 26.7.1998 | 4 h Spa | 26 | | Gay / Cohen-Olivar / Ameur | Swiss Team Salamin | DNA |
| 26.7.1998 | 4 h Spa | 27 | #WP0ZZZ99ZTS393095 | Jarier / Lagniez / Lafon | Sonauto Levallois | DNA |
| 26.7.1998 | 4 h Spa | 28 | #WP0ZZZ99ZTS393107 | Smith / Véroux / Marchner | Seikel Motorsport | DNF |
| 26.7.1998 | 4 h Spa | 29 | #WP0ZZZ99ZTS394075 | Monteiro / Monteiro | Estoril Racing | DNF |
| 26.7.1998 | 4 h Spa | 32 | | Pagotto / Giribaldi | Luigino Pagotto | DNA |
| 26.7.1998 | 4 h Spa | 33 | #0460003 | Hemroulle / Kumpen / Cohen | GLPK Racing | 8th |
| 26.7.1998 | 4 h Spa | 35 | #0480098 | Kaufmann / Ligonnet | Freisinger Motorsport | 1st |
| 26.7.1998 | 4 h Spa | 37 | #WP0ZZZ99ZTS393082 | Sangiuolo / Buttiero / Mastropietro | RWS | DNF |
| 26.7.1998 | 4 h Spa | 48 | | Pregliasco / Lambertini / Konrad | Konrad Motorsport | DNF |
| 26.7.1998 | CDN GT Mont-Tremblant | 91 | #WP0ZZZ99ZTS394062 | Harry Bytzek | | 3rd |
| 2.8.1998 | British GT Donington | 33 | #WP0ZZZ99ZWS393003 | Saunders / Saunders | Gaumont/Parr Motorsport | 13th |
| 2.8.1998 | British GT Donington | 35 | #WP0ZZZ99ZTS393078? | Barrett / Lockie | G-Force Motorsport | 11th |
| 2.8.1998 | British GT Donington | 40 | #WP0ZZZ99ZTS394067 | Day / Guglielmi | P K Sport | 12th |
| 2.8.1998 | British GT Donington | 42 | | Konig / Phillips | P K Sport | 15th |
| 2.8.1998 | British GT Donington | 50 | #WP0ZZZ99ZWS393004 | Morrison / Lister | Blue Coral/Slick 50/Quaker State | 8th |
| 8.8.1998 | Special GT Cup Fuji | 10 | | Asou / Ishikawa | Ability | DNF |
| 8.8.1998 | Special GT Cup Fuji | 30 | | Yamada / Okada | Team Take One | 15th |
| 8.8.1998 | Special GT Cup Fuji | 70 | | Ishibashi / van Schoote | Team Gaikokuya | 29th |
| 8.8.1998 | Special GT Cup Fuji | 71 | | Hoshino / Jounai | Sigmatec Racing Team | 20th |
| 9.8.1998 | 2 h 45 min Mosport | 04 | #WP0ZZZ99ZWS393001 | Morton / Graham | CJ Motorsport | 13th |
| 9.8.1998 | SM GTR Falkenberg | 7 | | Bo Jonasson | Bosse Jonasson | 6th/4th |
| 9.8.1998 | 2 h 45 min Mosport | 99 | #WP0ZZZ99ZTS393104 | Schumacher / Pilgrim / O'Steen | Schumacher Racing | 12th |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 91 | #WP0ZZZ99ZTS394062 | Harry Bytzek | | 1st |
| 16.8.1998 | Belcar Assen | 93 | | Van der Pluym / Grammet | Bienstman Didier | 10th |
| 23.8.1998 | British GT Silverstone | 16 | #WP0ZZZ99ZTS394069 | Williams / Beaverbroock | | 14th |
| 23.8.1998 | British GT Silverstone | 32 | | MacQuillan / Lloyd | Gerard MacQuillan | NC |
| 23.8.1998 | British GT Silverstone | 33 | #WP0ZZZ99ZWS393003 | Saunders / Saunders | Gaumont/Parr Motorsport | DNF |
| 23.8.1998 | British GT Silverstone | 35 | #WP0ZZZ99ZTS393078? | Barrett / Lockie | G-Force Motorsport | 7th |
| 23.8.1998 | British GT Silverstone | 40 | #WP0ZZZ99ZTS394067 | Day / Jordan | P K Sport | 4th |
| 23.8.1998 | British GT Silverstone | 42 | | Konig / Phillips | P K Sport | NC |
| 23.8.1998 | British GT Silverstone | 50 | #WP0ZZZ99ZWS393004 | Morrison / Lister | Blue Coral/Slick 50/Quaker State | DNS |
| 23.8.1998 | 1000 km Suzuka | 56 | | Lammers / Hürtgen / Hezemans | Roock Racing | 15th |
| 23.8.1998 | 1000 km Suzuka | 57 | | Eichmann / Maassen / Wada | Roock Racing | DNF |
| 23.8.1998 | 1000 km Suzuka | 58 | #98 RST 530 003 | Ahrlé / Nearn / Prutirat | Roock Sportsystem | DNF |
| 23.8.1998 | 1000 km Suzuka | 60 | #WP0ZZZ99ZWS393011? | Neugarten / Ruch / Ligonnet | Elf Haberthur Racing | 13th |
| 23.8.1998 | 1000 km Suzuka | 61 | | Graham / Smadja / Kimoto | Elf Haberthur Racing | 19th |
| 23.8.1998 | 1000 km Suzuka | 62 | | Sick / Hunkeler / Clavuot | Stadler Motorsport | DNF |
| 23.8.1998 | 1000 km Suzuka | 65 | | Stretton / Hane / Harada | Konrad Motorsport | DNF |
| 23.8.1998 | 1000 km Suzuka | 66 | | Konrad / Heger / Sallaz | Konrad Motorsport | 12th |
| 23.8.1998 | 1000 km Suzuka | 69 | #WP0ZZZ99ZTS394065 | Vuillaume / Ried / Jurasz | Proton Competition | 17th |
| 23.8.1998 | 1000 km Suzuka | 76 | #WP0ZZZ99ZTS393107 | Smith / Suzuki | Seikel Motorsport | 16th |
| 23.8.1998 | 1000 km Suzuka | 87 | | Marchner / Sakurai / Yoshikawa | Seikel Motorsport | 23rd |
| 23.8.1998 | 6 h Watkins Glen | 99 | #WP0ZZZ99ZTS393104 | O'Steen / Schumacher | Schumacher Racing | 20th |
| 23.8.1998 | 1000 km Suzuka | 110 | | Asou / Ishikawa / Hinoi | Ability | DQ |
| 23.8.1998 | 1000 km Suzuka | 170 | | Ishibashi / van Schoote / Nodi | Team Gaikokuya | 20th |
| 30.8.1998 | CDN GT Mosport | 91 | #WP0ZZZ99ZTS394062 | Harry Bytzek | | 4th |
| 6.9.1998 | 24 h Zolder | 1 | | Dupont / Taels / Kumpen | FINA - GLPK Racing | 3rd |
| 6.9.1998 | SM GTR Knutstorp | 7 | | Bo Jonasson | Bo Jonasson | 5th/8th |
| 6.9.1998 | 500 km Donington | 56 | | Ortelli / Hürtgen | Roock Racing | 21st |
| 6.9.1998 | 500 km Donington | 57 | | Eichmann / Hezemans / Ahrlé | Roock Racing | 20th |
| 6.9.1998 | 500 km Donington | 58 | #98 RST 530 003 | Robinson / Price | Roock Sportsystem | DQ |
| 6.9.1998 | 500 km Donington | 60 | #WP0ZZZ99ZWS393011? | Neugarten / Ruch / Spinelli | Elf Haberthur Racing | DNF |
| 6.9.1998 | 500 km Donington | 61 | | Graham / Smadja / Clérico | Elf Haberthur Racing | 19th |
| 6.9.1998 | 500 km Donington | 62 | | Rohr / Sick | Stadler Motorsport | DNF |
| 6.9.1998 | 500 km Donington | 63 | #WP0ZZZ99ZTS394071 | Trunk / Müller | Krauss Race Sports International | 15th |
| 6.9.1998 | 500 km Donington | 65 | | Stretton / Seiler | Konrad Motorsport | 13th |
| 6.9.1998 | 500 km Donington | 66 | | Konrad / Heger | Konrad Motorsport | 9th |
| 6.9.1998 | 500 km Donington | 69 | #WP0ZZZ99ZTS394065 | Vuillaume / Ried | Proton Competition | 17th |
| 6.9.1998 | SM GTR Knutstorp | 85 | | Christer Steen | Christer Steen | 11th/DNF |
| 6.9.1998 | 24 h Zolder | 86 | | Van der Pluym / Grammet / De Veirman | Bienstman Didier | raced |