| 10.5.1998 | FFSA GT Spa | 4 | 993 GT2 | Roland Bervillé | Almeras Freres | DNA |
| 10.5.1998 | FFSA GT Spa | 6 | 993 GT2 | Nourry / Perrier | Michel Nourry | DNA |
| 10.5.1998 | FFSA GT Spa | 8 | 993 GT2 | Gérard Dillmann | Swiss Team Salamin | DNA |
| 10.5.1998 | SM GTR Mantorp Park | 8 | 944 Turbo | Kenneth Olsson | Kenneth Olsson | DNS |
| 10.5.1998 | FFSA GT Spa | 10 | 993 GT2 | Martin / Hürtgen | Michael Martin | DNS/DNF |
| 10.5.1998 | FFSA GT Spa | 14 | 993 GT2 R | Schwach / Ligonnet | Seikel Motorsport | 6th/5th |
| 10.5.1998 | FFSA GT Spa | 15 | 993 GT2 | Otto Altenbach | Obermaier | DNS/DNF |
| 10.5.1998 | FFSA GT Spa | 16 | 993 GT2 | Josef Kalder | | 21st/DNS |
| 10.5.1998 | FFSA GT Spa | 32 | 993 Cup | François Boursier | JB Racing | DNA |
| 10.5.1998 | FFSA GT Spa | 37 | 993 Cup | Jean-Pierre Comte | SLM | DNA |
| 10.5.1998 | FFSA GT Spa | 38 | 993 Cup | Davy / Salles | Michel Nourry | DNA |
| 10.5.1998 | FFSA GT Spa | 43 | 993 Cup | Véroux / Boin | Veroux | DNA |
| 10.5.1998 | FFSA GT Spa | 46 | 996 GT3 Cup | Dupuy / Fiat | DDO | DNA |
| 10.5.1998 | FFSA GT Spa | 49 | 993 Cup | Luis Marques | Estoril Racing Team | 11th/12th |
| 10.5.1998 | FFSA GT Spa | 50 | 993 Cup | Peter Wirichs | Porsche Zentrum Willich | 17th/17th |
| 10.5.1998 | FFSA GT Spa | 51 | 993 Cup | Richard / Perrier | Richard | 16th/16th |
| 10.5.1998 | FFSA GT Spa | 54 | 993 Cup | Reis / Bajo | Eco Tec | 12th/14th |
| 10.5.1998 | FFSA GT Spa | 61 | 964 Carrera Cup | Dro / Camus | Pascal Dro | DNA |
| 10.5.1998 | FFSA GT Spa | 62 | 964 Carrera Cup | Franck Solladier | Franck Solladier | DNA |
| 10.5.1998 | FFSA GT Spa | 63 | 964 Carrera Cup | Fresnais / Tondu | Fresnais | DNA |
| 10.5.1998 | FFSA GT Spa | 94 | 944 Turbo Cup | Garcia / Gallardo | Pitline | 24th/20th |
| 17.5.1998 | 2 h 15 min Homestead | 04 | 993 GT2 R | Morton / Graham / Huisman | C.J. Motorsports | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 07 | 993 GT2 Evo | Marshall / Marshall | G & W Motorsports | 16th |
| 17.5.1998 | 500 km Silverstone | 5 | 911 GT1-98 | Grau / Scheld | Zakspeed Racing | 5th |
| 17.5.1998 | 500 km Silverstone | 6 | 911 GT1-98 | Bartels / Hahne | Zakspeed Racing | 3rd |
| 17.5.1998 | 500 km Silverstone | 7 | 911 GT1-98 | McNish / Wollek | Porsche AG | DNF |
| 17.5.1998 | 500 km Silverstone | 8 | 911 GT1-98 | Alzen / Müller | Porsche AG | 2nd |
| 17.5.1998 | 2 h 15 min Homestead | 17 | 911 Carrera RSR | Dennis Aase | AASCO Performance | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 23 | 993 Carrera RSR | Havens / Wagner | Alex Job Racing | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 24 | 911 Carrera RSR | | Alex Job Racing | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 25 | 911 Carrera RSR | Don Kitch | Alex Job Racing | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 38 | 911 GT1 Evo | Boutsen / Raphanel | Champion Motors | 4th |
| 17.5.1998 | 2 h 15 min Homestead | 41 | 993 Carrera RSR | Busby / Cervelli | Technodyne | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 52 | 911 Carrera RSR | Stitt / Russell | Team Protosport GT | 18th |
| 17.5.1998 | 2 h 15 min Homestead | 55 | 911 Carrera RSR | Ralston / Trejos | AASCO Performance | 13th |
| 17.5.1998 | 500 km Silverstone | 56 | 993 GT2 R | Hürtgen / Ortelli | Roock Racing | DNF |
| 17.5.1998 | 500 km Silverstone | 57 | 993 GT2 | Eichmann / Maassen | Roock Racing | DNF |
| 17.5.1998 | 500 km Silverstone | 58 | 993 GT2 | Sugden / Owen / Ahrlé | Roock Sportsystem | 18th |
| 17.5.1998 | 500 km Silverstone | 60 | 993 GT2 R | Neugarten / Ruch / Spinelli | Elf Haberthur Racing | 10th |
| 17.5.1998 | 500 km Silverstone | 61 | 993 GT2 R | Graham / Velay / Smadja / Neugarten / Ruch | Elf Haberthur Racing | DNA |
| 17.5.1998 | 500 km Silverstone | 62 | 993 GT2 | Sick / Rohr | Stadler Motorsport | 11th |
| 17.5.1998 | 500 km Silverstone | 63 | 993 GT2 | Trunk / Müller | Krauss Race Sports International | 16th |
| 17.5.1998 | 500 km Silverstone | 65 | 993 GT2 R | Seiler / Stretton | Konrad Motorsport | 17th |
| 17.5.1998 | 500 km Silverstone | 66 | 993 GT2 | Konrad / Ham | Konrad Motorsport | 15th |
| 17.5.1998 | 500 km Silverstone | 67 | 993 GT2 | | Freisinger Motorsport | DNA |
| 17.5.1998 | 500 km Silverstone | 69 | 993 GT2 | Ried / Vuillaume | Proton Competition | 12th |
| 17.5.1998 | 2 h 15 min Homestead | 69 | 993 Carrera Turbo | Spreng | Spreng Enterprises | 25th |
| 17.5.1998 | 2 h 15 min Homestead | 69 | 993 GT2 | Lay / Langhorne | Proton Competition | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 73 | 993 Carrera RSR | Jack Lewis | Jack Lewis Enterprises | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 76 | 993 Carrera RSR | Doolin / Peeler | Team A.R.E. | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 86 | 993 Carrera RSR | Steve Marshall | G & W Motorsports | DNA |
| 17.5.1998 | 500 km Silverstone | 96 | 993 GT2 | Felbermayr, Sr. / Felbermayr, Jr. | Proton Competition | DNF |
| 17.5.1998 | 2 h 15 min Homestead | 96 | 993 | Zitza / Wheeler | Olive Garden Racing | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 98 | 993 GT2 | Ham / Konrad | Konrad Motorsport | DNA |
| 17.5.1998 | 2 h 15 min Homestead | 99 | 993 GT2 | Schumacher / O'Steen | Schumacher Racing | DNA |
| 23.5.1998 | 6 h Misano | 6 | 993 GT2 | Mastropietro / Mastropietro / Padovani | Renato Mastroprieto | 2nd |
| 23.5.1998 | 4 h Misano | 6 | 993 GT2 | Mastropietro / Mastropietro / Padovani | Renato Mastroprieto | 3rd |
| 23.5.1998 | 6 h Misano | 11 | 964 Carrera RSR 3.8 | Cassina / Michelotti / Bocciardi | Matteo Cassina | 4th |
| 23.5.1998 | 4 h Misano | 11 | 964 Carrera RSR 3.8 | Cassina / Michelotti / Bocciardi | Matteo Cassina | 6th |
| 23.5.1998 | 6 h Misano | 12 | 964 Carrera RSR 3.8 | Haupt / Gottifredi / Biava | Claudio Haupt | 8th |
| 23.5.1998 | 4 h Misano | 12 | 964 Carrera RSR 3.8 | Haupt / Gottifredi / Biava | Claudio Haupt | 11th |
| 23.5.1998 | 6 h Misano | 14 | 993 Cup | Schmid / Villa / Pasquali | Riccardo Schmid | 5th |
| 23.5.1998 | 4 h Misano | 14 | 993 Cup | Schmid / Villa / Pasquali | Riccardo Schmid | 7th |
| 23.5.1998 | 4 h Misano | 15 | 911 Carrera Cup | Cattaneo / De Castro / Gianotti | Win Sport | 9th |
| 23.5.1998 | 6 h Misano | 15 | 911 Carrera Cup | Cattaneo / De Castro / Gianotti | Win Sport | 6th |
| 23.5.1998 | 4 h Misano | 16 | 911 Carrera RS | Viganó / Rosa / Rosa | Giovanni Vigano | 13th |
| 23.5.1998 | 6 h Misano | 16 | 911 Carrera RS | Viganó / Rosa / Rosa | Giovanni Vigano | 10th |
| 23.5.1998 | 6 h Misano | 19 | 911 Carrera Cup | Costacurta / Bellini | Walter Costacurta | 9th |
| 23.5.1998 | 4 h Misano | 19 | 911 Carrera Cup | Costacurta / Bellini | Walter Costacurta | 12th |
| 23.5.1998 | 4 h Misano | 28 | 993 GT2 R | Smith / Grassi / Ligonnet | Seikel Motorsport | 2nd |
| 23.5.1998 | 6 h Misano | 28 | 993 GT2 R | Smith / Grassi / Ligonnet | Seikel Motorsport | 1st |
| 23.5.1998 | 6 h Misano | 29 | 993 GT2 R | Monteiro / Monteiro | Estoril Racing Team | DNA |
| 23.5.1998 | 4 h Misano | 29 | 993 GT2 R | Monteiro / Monteiro | Estoril Racing Team | DNA |
| 23.5.1998 | 6 h Misano | 32 | 993 GT2 | Pagotto / Giribaldi | Luigino Pagotto | DNF |
| 23.5.1998 | 4 h Misano | 32 | 993 GT2 | Pagotto / Giribaldi | Luigino Pagotto | DNF |
| 23.5.1998 | 6 h Misano | 33 | 993 GT2 | Margueron / Cohen / Kumpen | GLPK Racing | DNF |
| 23.5.1998 | 4 h Misano | 33 | 993 GT2 | Margueron / Cohen / Kumpen | GLPK Racing | 1st |
| 23.5.1998 | 6 h Misano | 35 | 993 GT2 | Ligonnet / Kaufmann | Freisinger Motorsport | DNA |
| 23.5.1998 | 4 h Misano | 35 | 993 GT2 | Ligonnet / Kaufmann | Freisinger Motorsport | DNA |
| 23.5.1998 | 6 h Misano | 37 | 993 GT2 R | Buttiero / Sangiuolo | RWS Brun Motorsport | DNF |
| 23.5.1998 | 4 h Misano | 37 | 993 GT2 R | Buttiero / Sangiuolo | RWS Brun Motorsport | DNF |
| 23.5.1998 | 4 h Misano | 43 | 993 GT2 | Frigerio / Sabatini / Babini | Massimo Frigerio | DNA |
| 23.5.1998 | 6 h Misano | 43 | 993 GT2 | Frigerio / Sabatini / Babini | Massimo Frigerio | DNA |
| 23.5.1998 | 4 h Misano | 46 | 993 GT2 | | Konrad Motorsport | DNA |
| 23.5.1998 | 6 h Misano | 46 | 993 GT2 | | Konrad Motorsport | DNA |
| 23.5.1998 | 4 h Misano | 47 | 993 GT2 | MacQuillan / Erdos | Gerard MacQuillan | DNA |
| 23.5.1998 | 6 h Misano | 47 | 993 GT2 | MacQuillan / Erdos | Gerard MacQuillan | DNA |
| 23.5.1998 | 4 h Misano | 51 | 993 Cup | Blieninger / Riccitelli / Hofer | RWS Brun Motorsport | 5th |
| 23.5.1998 | 6 h Misano | 51 | 993 Cup | Blieninger / Riccitelli / Hofer | RWS Brun Motorsport | 3rd |
| 23.5.1998 | 6 h Misano | 76 | 993 Cup | Perrier / Ricci / Richard | Perspective Automobiles | 11th |
| 23.5.1998 | 4 h Misano | 76 | 993 Cup | Perrier / Ricci / Richard | Perspective Automobiles | 8th |
| 23.5.1998 | 6 h Misano | 77 | 993 Cup | Touroul / Ortion | Raymond Touroul | DNA |
| 23.5.1998 | 4 h Misano | 77 | 993 Cup | Touroul / Ortion | Raymond Touroul | DNA |
| 23.5.1998 | 6 h Misano | 78 | 993 Cup | Albouy / Peyroles | Pilotage Passion | DNA |
| 23.5.1998 | 4 h Misano | 78 | 993 Cup | Albouy / Peyroles | Pilotage Passion | DNA |
| 23.5.1998 | 4 h Misano | 81 | 993 Cup | Helmut Reis | Eco Tec | DNA |
| 23.5.1998 | 6 h Misano | 81 | 993 Cup | Helmut Reis | Eco Tec | DNA |
| 23.5.1998 | 4 h Misano | | 964 Carrera RSR 3.8 | Monforte / Monforte / Monforte | Giuseppe Monforte | DNA |
| 23.5.1998 | 6 h Misano | | 964 Carrera RSR 3.8 | Monforte / Monforte / Monforte | Giuseppe Monforte | DNA |
| 24.5.1998 | British GT Croft | 0 | 911 GT1 | Greasley / Wallinder | Blue Coral/Slick 50/Quaker State | 4th |