| 17.5.1998 | 500 km Silverstone | 67 | | | Freisinger Motorsport | DNA |
| 17.5.1998 | 500 km Silverstone | 69 | #WP0ZZZ99ZTS394065 | Ried / Vuillaume | Proton Competition | 12th |
| 17.5.1998 | 500 km Silverstone | 96 | | Felbermayr / Felbermayr, Jr. | Proton Competition | DNF |
| 23.5.1998 | 6 h Misano | 6 | #0460016 | Mastropietro / Mastropietro / Padovani | Renato Mastroprieto | 2nd |
| 23.5.1998 | 4 h Misano | 6 | #0460016 | Mastropietro / Mastropietro / Padovani | Renato Mastroprieto | 3rd |
| 23.5.1998 | 6 h Misano | 28 | #WP0ZZZ99ZTS393107 | Smith / Grassi / Ligonnet | Seikel Motorsport | 1st |
| 23.5.1998 | 4 h Misano | 28 | #WP0ZZZ99ZTS393107 | Smith / Grassi / Ligonnet | Seikel Motorsport | 2nd |
| 23.5.1998 | 6 h Misano | 29 | #WP0ZZZ99ZTS394075 | Monteiro / Monteiro | Estoril Racing Team | DNA |
| 23.5.1998 | 4 h Misano | 29 | #WP0ZZZ99ZTS394075 | Monteiro / Monteiro | Estoril Racing Team | DNA |
| 23.5.1998 | 4 h Misano | 32 | | Pagotto / Giribaldi | Luigino Pagotto | DNF |
| 23.5.1998 | 6 h Misano | 32 | | Pagotto / Giribaldi | Luigino Pagotto | DNF |
| 23.5.1998 | 6 h Misano | 33 | #0460003 | Margueron / Cohen / Kumpen | GLPK Racing | DNF |
| 23.5.1998 | 4 h Misano | 33 | #0460003 | Margueron / Cohen / Kumpen | GLPK Racing | 1st |
| 23.5.1998 | 4 h Misano | 35 | #0480098 | Ligonnet / Kaufmann | Freisinger Motorsport | DNA |
| 23.5.1998 | 6 h Misano | 35 | #0480098 | Ligonnet / Kaufmann | Freisinger Motorsport | DNA |
| 23.5.1998 | 6 h Misano | 37 | #WP0ZZZ99ZTS393082 | Buttiero / Sangiuolo | RWS Brun Motorsport | DNF |
| 23.5.1998 | 4 h Misano | 37 | #WP0ZZZ99ZTS393082 | Buttiero / Sangiuolo | RWS Brun Motorsport | DNF |
| 23.5.1998 | 4 h Misano | 43 | | Frigerio / Sabatini / Babini | Massimo Frigerio | DNA |
| 23.5.1998 | 6 h Misano | 43 | | Frigerio / Sabatini / Babini | Massimo Frigerio | DNA |
| 23.5.1998 | 4 h Misano | 46 | | | Konrad Motorsport | DNA |
| 23.5.1998 | 6 h Misano | 46 | | | Konrad Motorsport | DNA |
| 23.5.1998 | 4 h Misano | 47 | | MacQuillan / Erdos | Gerard MacQuillan | DNA |
| 23.5.1998 | 6 h Misano | 47 | | MacQuillan / Erdos | Gerard MacQuillan | DNA |
| 24.5.1998 | British GT Croft | 33 | #WP0ZZZ99ZWS393003 | Saunders / Saunders | Gaumont/Parr Motorsport | 12th |
| 24.5.1998 | British GT Croft | 37 | | Barrett / Lockie | The Premium Team - Carmichaels Motorsport | 14th |
| 24.5.1998 | British GT Croft | 40 | #WP0ZZZ99ZTS394067 | Day / Astley | P K Sport | 9th |
| 24.5.1998 | British GT Croft | 42 | | Konig / Fisken | P K Sport | 11th |
| 24.5.1998 | British GT Croft | 50 | #WP0ZZZ99ZWS393004 | Morrison / Lister | Blue Coral/Slick 50/Quaker State | 7th |
| 24.5.1998 | CDN GT Mosport BEMC Spring | 91 | #WP0ZZZ99ZTS394062 | Harry Bytzek | | 3rd |
| 25.5.1998 | 1 h 45 min Lime Rock [GT] | 99 | #WP0ZZZ99ZTS393104 | Schumacher / Varde | Schumacher Racing | 6th |
| 31.5.1998 | SM GTR Gelleråsen | 7 | | Bo Jonasson | Bosse Jonasson | 3rd/raced |
| 7.6.1998 | 24 h Le Mans | 60 | #WP0ZZZ99ZTS394074 | Jarier / Rosenblad / Donovan | Ets Chéreau | DNF |
| 7.6.1998 | 24 h Le Mans | 61 | #WP0ZZZ99ZTS394071 | Trunk / Palmberger / Müller | Krauss Race Sports International | DNF |
| 7.6.1998 | 24 h Le Mans | 62 | #WP0ZZZ99ZWS393001 | Morton / Graham / Grohs | C. J. Motorsport | DNF |
| 7.6.1998 | 24 h Le Mans | 63 | | Erdos / MacQuillan | Gerard MacQuillan | DNPQ |
| 7.6.1998 | 24 h Le Mans | 64 | #0480039 | Hürtgen / Ligonnet / Nearn | Roock Racing Motorsport | 17th |
| 7.6.1998 | 24 h Le Mans | 65 | #0480040 | Ahrlé / Schirle / Warnock | Roock Racing | 22nd |
| 7.6.1998 | 24 h Le Mans | 66 | | Maassen / Price / Robinson | Roock Racing | DNPQ |
| 7.6.1998 | 24 h Le Mans | 67 | #WP0ZZZ99ZWS393011 | Neugarten / Smadja / Lagniez | Elf Haberthur Racing | DNF |
| 7.6.1998 | 24 h Le Mans | 68 | #WP0ZZZ99ZTS393085 | Maury-Laribiére / Graham / Poulain | Elf Haberthur Racing | 20th |
| 7.6.1998 | 24 h Le Mans | 69 | #WP0ZZZ99ZTS393103 | Nourry / Perrier / Ricci | Michel Nourry | 18th |
| 7.6.1998 | 24 h Le Mans | 70 | #WP0ZZZ99ZTS394066 | Konrad / Ham / Schumacher | Konrad Motorsport | DNF |
| 7.6.1998 | 24 h Le Mans | 71 | #WP0ZZZ99ZTS394075 | Monteiro / Maisonneuve / Monteiro | Estoril Racing | DNF |
| 7.6.1998 | 24 h Le Mans | 72 | #WP0ZZZ99ZWS393010 | Goueslard / Yver / Chéreau | Larbre Compétition | DNF |
| 7.6.1998 | 24 h Le Mans | 73 | #WP0ZZZ99ZTS393076 | Seiler / Kitchak / Zadra | Konrad Motorsport | DNF |
| 14.6.1998 | FFSA GT Charade | 1 | | Goueslard / Sourd | Larbre Compétition | 1st/DNF |
| 14.6.1998 | FFSA GT Charade | 2 | #WP0ZZZ99ZWS393002 | Jarier / Lafon | Sonauto-Levallois | 3rd/1st |
| 14.6.1998 | FFSA GT Charade | 4 | | Roland Bervillé | Alméras Fréres | 4th/3rd |
| 14.6.1998 | FFSA GT Charade | 7 | #WP0ZZZ99ZWS393010 | Malcher / Yver | Larbre Compétition | 2nd/2nd |
| 14.6.1998 | British GT Snetterton | 33 | #WP0ZZZ99ZWS393003 | Saunders / Saunders | Gaumont/Parr Motorsport | 8th |
| 14.6.1998 | British GT Snetterton | 40 | #WP0ZZZ99ZTS394067 | Day / Pickup | P K Sport | 7th |
| 14.6.1998 | British GT Snetterton | 42 | | Konig / Fisken | P K Sport | 10th |
| 14.6.1998 | British GT Snetterton | 50 | #WP0ZZZ99ZWS393004 | Morrison / Lister | Blue Coral/Slick 50/Quaker State | 6th |
| 14.6.1998 | British GT Snetterton | 58 | | Wellings / Guest | Wellings/Guest | DNF |
| 14.6.1998 | CDN GT Shannonville CRDA Shootout | 91 | #WP0ZZZ99ZTS394062 | Harry Bytzek | | 2nd |
| 14.6.1998 | 2 h 30 min Mid-Ohio | 99 | #WP0ZZZ99ZTS393104 | Schumacher / Pilgrim | Schumacher Racing | 10th |
| 21.6.1998 | 3 h 45 min Road Atlanta | 99 | #WP0ZZZ99ZTS393104 | O'Steen / Pilgrim / Schumacher | Schumacher Racing | 11th |
| 27.6.1998 | Hi-Land GT Sendai | 10 | | Asou / Ishikawa | Ability | 22nd |
| 27.6.1998 | Hi-Land GT Sendai | 30 | | Yamada / Okada | Team Take One | 8th |
| 27.6.1998 | Hi-Land GT Sendai | 70 | | Ishibashi / van Schoote | Team Gaikokuya | DNF |
| 27.6.1998 | Hi-Land GT Sendai | 71 | | Hoshino / Jounai | Sigmatec Racing Team | 19th |
| 28.6.1998 | 1 h 45 min Minneapolis | 04 | #WP0ZZZ99ZWS393001 | Morton / Graham / Huisman | C.J. Motorsports | DNA |
| 28.6.1998 | SM GTR Anderstorp | 7 | | Bo Jonasson | Bo Jonasson | 3rd/7th |
| 28.6.1998 | 500 km Hockenheim | 56 | | Ortelli / Hürtgen | Roock Racing | 12th |
| 28.6.1998 | 500 km Hockenheim | 57 | | Eichmann / Maassen | Roock Racing | 11th |
| 28.6.1998 | 500 km Hockenheim | 58 | #98 RST 530 003 | Ahrlé / Prutirat | Roock Sportsystem | 24th |
| 28.6.1998 | 500 km Hockenheim | 60 | #WP0ZZZ99ZWS393011? | Neugarten / Ruch / Spinelli | Elf Haberthur Racing | 13th |
| 28.6.1998 | 500 km Hockenheim | 61 | | Velay / Graham / Smadja | Elf Haberthur Racing | 17th |
| 28.6.1998 | 500 km Hockenheim | 62 | | Sick / Rohr | Stadler Motorsport | 14th |
| 28.6.1998 | 500 km Hockenheim | 63 | #WP0ZZZ99ZTS394071 | Trunk / Müller | Krauss Race Sports International | 23rd |
| 28.6.1998 | 500 km Hockenheim | 65 | | Seiler / Stretton | Konrad Motorsport | 15th |
| 28.6.1998 | 500 km Hockenheim | 66 | | Konrad / Ham | Konrad Motorsport | 20th |
| 28.6.1998 | 1 h 45 min Minneapolis | 69 | #WP0ZZZ99ZTS394065 | Lay / Langhorne | Proton Competition | DNA |
| 28.6.1998 | 500 km Hockenheim | 69 | #WP0ZZZ99ZTS394065 | Vuillaume / Ried | Proton Competition | DNF |
| 28.6.1998 | 500 km Hockenheim | 74 | | Rostan / Piattier / Werner | Paul Belmondo Racing | NC |
| 28.6.1998 | 500 km Hockenheim | 75 | | Schwach / Cohen-Olivar | Swiss Team Salamin | DNS |
| 28.6.1998 | 500 km Hockenheim | 76 | #WP0ZZZ99ZTS393107 | Marchner / Palmberger / Mastropietro | Seikel Motorsport | 21st |
| 28.6.1998 | SM GTR Anderstorp | 85 | | Christer Steen | Christer Steen | DNS/4th |
| 28.6.1998 | CDN GT Shannonville Trilllium Trophy | 91 | #WP0ZZZ99ZTS394062 | Harry Bytzek | | 3rd |
| 28.6.1998 | 500 km Hockenheim | 96 | | Felbermayr / Felbermayr, Jr. | Proton Competition | 16th |
| 28.6.1998 | 1 h 45 min Minneapolis | 98 | | Ham / Konrad | Konrad Motorsport | DNA |
| 28.6.1998 | 1 h 45 min Minneapolis | 99 | #WP0ZZZ99ZTS393104 | Schumacher / O'Steen | Schumacher Racing | DNA |
| 11.7.1998 | FFSA GT Dijon | 1 | | Goueslard / Sourd | Larbre Compétition | 2nd/1st |
| 11.7.1998 | FFSA GT Dijon | 2 | #WP0ZZZ99ZWS393002 | Jarier / Lafon | Sonauto-Levallois | 1st/2nd |
| 11.7.1998 | FFSA GT Dijon | 4 | | Roland Bervillé | Alméras Fréres | 6th/7th |
| 11.7.1998 | FFSA GT Dijon | 6 | #WP0ZZZ99ZTS393103 | Michel Nourry | Michel Nourry | - |
| 11.7.1998 | FFSA GT Dijon | 7 | #WP0ZZZ99ZWS393010 | Malcher / Yver | Larbre Compétition | DNF/4th |
| 11.7.1998 | FFSA GT Dijon | 11 | | Eschmann / Hulverscheid | Manthey Racing | DNF/5th |
| 11.7.1998 | FFSA GT Dijon | 14 | | Schwach / Rosterg | Seikel Motorsport | 4th/6th |
| 11.7.1998 | FFSA GT Dijon | 15 | | Otto Altenbach | Obermaier Racing | - |
| 11.7.1998 | FFSA GT Dijon | 16 | | Josef Kalder | Josef Kalder | - |
| 11.7.1998 | FFSA GT Dijon | 18 | | Favre / Pouly | Aimé Pouly | 5th/14th |
| 12.7.1998 | British GT Silverstone | 32 | | MacQuillan / Erdos | Gerard MacQuillan | NC |
| 12.7.1998 | British GT Silverstone | 33 | #WP0ZZZ99ZWS393003 | Saunders / Saunders | Gaumont Motorsport | DNF |
| 12.7.1998 | British GT Silverstone | 35 | #WP0ZZZ99ZTS393078? | Lockie / Barrett | G-Force Motorsport Ltd. | 14th |
| 12.7.1998 | British GT Silverstone | 40 | #WP0ZZZ99ZTS394067 | Stephen Day | PK Sport | 11th |
| 12.7.1998 | British GT Silverstone | 42 | | Konig / Phillips | PK Sport | NC |
| 12.7.1998 | British GT Silverstone | 50 | #WP0ZZZ99ZWS393004 | Morrison / Lister | Blue Coral/Slick 50 Racing | 10th |
| 12.7.1998 | 500 km Dijon | 56 | | Hürtgen / Collard | Roock Racing | 16th |
| 12.7.1998 | British GT Silverstone | 98 | | Warnock / Schirle | Cirtek Motorsport | DNA |