| 26.7.1998 | CDN GT Mont-Tremblant | 00 | 911 GT1 Evo | Klaus Bytzek | BMS Race Team | 1st |
| 26.7.1998 | CDN GT Mont-Tremblant | 00T | 911 GT1 | Klaus Bytzek | BMS Race Team | unused |
| 26.7.1998 | CDN GT Mont-Tremblant | 15 | 911 | Blair Killoran | | 16th |
| 26.7.1998 | 4 h Spa | 26 | 993 GT2 | Gay / Cohen-Olivar / Ameur | Swiss Team Salamin | DNA |
| 26.7.1998 | 4 h Spa | 27 | 993 GT2 R | Jarier / Lagniez / Lafon | Sonauto Levallois | DNA |
| 26.7.1998 | 4 h Spa | 28 | 993 GT2 R | Smith / Véroux / Marchner | Seikel Motorsport | DNF |
| 26.7.1998 | 4 h Spa | 29 | 993 GT2 R | Monteiro / Monteiro | Estoril Racing | DNF |
| 26.7.1998 | 4 h Spa | 32 | 993 GT2 | Pagotto / Giribaldi | Luigino Pagotto | DNA |
| 26.7.1998 | 4 h Spa | 37 | 993 GT2 R | Sangiuolo / Buttiero / Mastropietro | RWS | DNF |
| 26.7.1998 | 4 h Spa | 48 | 993 GT2 | Pregliasco / Lambertini / Konrad | Konrad Motorsport | DNF |
| 26.7.1998 | CDN GT Mont-Tremblant | 59 | 968 | Cullen / Martin | Georgian Bay Motorsports | DNS |
| 26.7.1998 | 4 h Spa | 61 | 993 | Margueron / Witmeur / Vosse | GLPK Racing | DNF |
| 26.7.1998 | 4 h Spa | 77 | 993 Cup | Touroul / Ortion / Barthe | Raymond Touroul | DNF |
| 26.7.1998 | 4 h Spa | 78 | 993 Cup | Thomas / Beau / Albouy | Pilotage Passion | DNF |
| 26.7.1998 | 4 h Spa | 81 | 993 Cup | | Eco Tec | DNA |
| 26.7.1998 | CDN GT Mont-Tremblant | 91 | 993 GT2 Evo | Harry Bytzek | | 3rd |
| 26.7.1998 | CDN GT Mont-Tremblant | 174 | 911 | Ulrich Furtmair | | 11th |
| 26.7.1998 | CDN GT Mont-Tremblant | 661 | 911 Turbo | Eric Boisvert | Rivard Competition | 4th |
| 26.7.1998 | CDN GT Mont-Tremblant | 771 | 911 Turbo | Fernand LeBlanc | MCL | 8th |
| 2.8.1998 | British GT Donington | 0 | 911 GT1 | Greasley / Wallinder | Blue Coral/Slick 50/Quaker State | 1st |
| 2.8.1998 | British GT Donington | 9 | 993 GT1 | Masarati / Mortimer | RMA Driving Sensations | DNS |
| 2.8.1998 | British GT Donington | 33 | 993 GT2 R | Saunders / Saunders | Gaumont/Parr Motorsport | 13th |
| 2.8.1998 | British GT Donington | 35 | 993 GT2 R | Barrett / Lockie | G-Force Motorsport | 11th |
| 2.8.1998 | British GT Donington | 40 | 993 GT2 R | Day / Guglielmi | P K Sport | 12th |
| 2.8.1998 | British GT Donington | 42 | 993 GT2 | Konig / Phillips | P K Sport | 15th |
| 2.8.1998 | British GT Donington | 46 | 964 Carrera RSR 3.8 | Caroline Lucas | P K Sport | 19th |
| 2.8.1998 | British GT Donington | 50 | 993 GT2 R | Morrison / Lister | Blue Coral/Slick 50/Quaker State | 8th |
| 2.8.1998 | British GT Donington | 58 | 911 Turbo | Wellings / Guest | Wellings/Guest | 20th |
| 8.8.1998 | Special GT Cup Fuji | 9 | 993 Carrera RSR 3.8 | | Team Daikokuya | DNS |
| 8.8.1998 | Special GT Cup Fuji | 10 | 993 GT2 | Asou / Ishikawa | Ability | DNF |
| 8.8.1998 | Special GT Cup Fuji | 30 | 993 GT2 | Yamada / Okada | Team Take One | 15th |
| 8.8.1998 | Special GT Cup Fuji | 51 | 993 Carrera RSR 3.8 | Ishihara / Iketani | Cobra Racing Team | 27th |
| 8.8.1998 | Special GT Cup Fuji | 70 | 993 GT2 | Ishibashi / van Schoote | Team Gaikokuya | 29th |
| 8.8.1998 | Special GT Cup Fuji | 71 | 993 GT2 | Hoshino / Jounai | Sigmatec Racing Team | 20th |
| 8.8.1998 | Special GT Cup Fuji | 910 | 993 Carrera RSR 3.8 | Yogo / Kobayashi | 910 Racing | 25th |
| 8.8.1998 | Special GT Cup Fuji | 911 | 993 Carrera RSR 3.8 | Takahashi / Nakajima | 910 Racing | DNF |
| 9.8.1998 | 2 h 45 min Mosport | 00 | 993 Carrera RSR | Friedman / Longhi | David Friedman | 15th |
| 9.8.1998 | 2 h 45 min Mosport | 04 | 993 GT2 R | Morton / Graham | CJ Motorsport | 13th |
| 9.8.1998 | SM GTR Falkenberg | 2 | 993 Carrera RSR | Hubert Berg | Hubert Berg | 1st/3rd |
| 9.8.1998 | SM GTR Falkenberg | 3 | 993 Cup RS | Lennart Pehrson | Lennart Pehrson | 3rd/6th |
| 9.8.1998 | SM GTR Falkenberg | 4 | Boxster 986 GTR | Henrik Roos | Jaan Tolli Motorsport JTI | 4th/5th |
| 9.8.1998 | SM GTR Falkenberg | 7 | 993 GT2 JPS | Bo Jonasson | Bosse Jonasson | 6th/4th |
| 9.8.1998 | SM GTR Falkenberg | 8 | 944 Turbo | Kenneth Olsson | Kenneth Olsson | 14th/DNS |
| 9.8.1998 | SM GTR Falkenberg | 10 | 944 Turbo | Peter Eriksson | Peter Eriksson | 12th/DNF |
| 9.8.1998 | SM GTR Falkenberg | 12 | 944 Turbo | Stefan Pfister | Stefan Pfister | 9th/7th |
| 9.8.1998 | 2 h 45 min Mosport | 22 | 993 Carrera RSR | Havens / Wagner | Alex Job Racing | DNS |
| 9.8.1998 | 2 h 45 min Mosport | 23 | 993 Carrera RSR | Wagner / Havens | Alex Job Racing | 14th |
| 9.8.1998 | SM GTR Falkenberg | 33 | 968 Turbo RS | Anders Roos | Anders Roos | 13th/12th |
| 9.8.1998 | SM GTR Falkenberg | 64 | 993 Carrera RS | Ulf Stenborg | Porsche Sports Club | 5th/9th |
| 9.8.1998 | SM GTR Falkenberg | 69 | 911 Cup | Mikael Frisk | Mikael Frisk | 7th/10th |
| 9.8.1998 | SM GTR Falkenberg | 88 | 935 DP | Hans Berglund | Hasse 'Z' Berglund | 17th/DNF |
| 9.8.1998 | SM GTR Falkenberg | 91 | | Knud E. Sörensen | Knud E. Sörensen | DNS |
| 9.8.1998 | 2 h 45 min Mosport | 99 | 993 GT2 | Schumacher / Pilgrim / O'Steen | Schumacher Racing | 12th |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 00 | 911 GT1 Evo | Klaus Bytzek | BMS Race Team | DQ |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 07 | 968 | Ludwig Heimrath | Heimrath Porsche Racing | 25th |
| 16.8.1998 | Belcar Assen | 1 | 911 | Dupont / Taels | FINA - GLPK Racing | 3rd |
| 16.8.1998 | Belcar Assen | 2 | 911 | Thiers / Vosse | FINA - GLPK Racing | raced |
| 16.8.1998 | Belcar Assen | 3 | 993 | Vanierschot / Longin | AD Sport | raced |
| 16.8.1998 | Belcar Assen | 5 | 993 | Wauters / Wauters | AD Sport | 7th |
| 16.8.1998 | Belcar Assen | 6 | 911 | Bruynoghe / Kumpen | AD Sport | 5th |
| 16.8.1998 | Belcar Assen | 8 | 993 | Van Vaerenbergh / Ramon | MRS - Janssen Jaak | raced |
| 16.8.1998 | Belcar Assen | 9 | 993 | Daems / Huisman | Van de Venne Geert | 4th |
| 16.8.1998 | Belcar Assen | 11 | 911 | Moonen / Schreurs | Peka Racing | raced |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 15 | 911 | Blair Killoran | | 30th |
| 16.8.1998 | Belcar Assen | 16 | 993 | La Rosa / Kumpen | AD Sport | 12th |
| 16.8.1998 | Belcar Assen | 17 | GT2 | Meers / Lievens | Uitgeerts Gerard | 8th |
| 16.8.1998 | Belcar Assen | 18 | 911 Carrera RSR | Kurris / Vetters | Renard Guy | 22nd |
| 16.8.1998 | Belcar Assen | 29 | 911 | Verheyen / Penders | Gabriels Jan | 20th |
| 16.8.1998 | Belcar Assen | 30 | 911 | Loix / Buytaert | Theunissen Rob | 9th |
| 16.8.1998 | Belcar Assen | 31 | 993 | Schoonbroodt / Van de Wauwer | Vaesen Raf | 13th |
| 16.8.1998 | Belcar Assen | 45 | 964 | Bastiaens / Dujardyn | René Van Hove | 14th |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 88 | 944 Turbo | Bob Munro | | 21st |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 91 | 993 GT2 Evo | Harry Bytzek | | 1st |
| 16.8.1998 | Belcar Assen | 93 | 993 GT2 | Van der Pluym / Grammet | Bienstman Didier | 10th |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 96 | 968 | Ray Arbesman | Heimrath Porsche Racing | 22nd |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 139 | 944 Turbo | Franczak / Bartling | | 24th |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 174 | 911 | Ulrich Furtmair | | 32nd |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 181 | 944 Turbo | Vito Scavone | | 16th |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 201 | 911 GT1 | Joel Reiser | Reiser-Callas | 7th |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 661 | 911 Turbo | Eric Boisvert | Rivard Competition | 15th |
| 16.8.1998 | CDN GT Mosport BARC GP Ontario | 771 | 911 Turbo | Fernand LeBlanc | MCL | 17th |
| 23.8.1998 | 1000 km Suzuka | 5 | 911 GT1-98 | Hahne / Delétraz / Giroix | Zakspeed Racing | 8th |
| 23.8.1998 | 1000 km Suzuka | 6 | 911 GT1-98 | Bartels / Grau / Scheld | Zakspeed Racing | 6th |
| 23.8.1998 | 1000 km Suzuka | 7 | 911 GT1-98 | McNish / Dalmas / Ortelli | Porsche AG | 3rd |
| 23.8.1998 | 1000 km Suzuka | 8 | 911 GT1-98 | Wollek / Alzen / Müller | Porsche AG | DNF |
| 23.8.1998 | British GT Silverstone | 16 | 993 GT2 Evo | Williams / Beaverbroock | | 14th |
| 23.8.1998 | British GT Silverstone | 32 | 993 GT2 | MacQuillan / Lloyd | Gerard MacQuillan | NC |
| 23.8.1998 | 1000 km Suzuka | 56 | 993 GT2 R | Lammers / Hürtgen / Hezemans | Roock Racing | 15th |
| 23.8.1998 | 1000 km Suzuka | 57 | 993 GT2 | Eichmann / Maassen / Wada | Roock Racing | DNF |
| 23.8.1998 | 1000 km Suzuka | 58 | 993 GT2 | Ahrlé / Nearn / Prutirat | Roock Sportsystem | DNF |
| 23.8.1998 | 1000 km Suzuka | 60 | 993 GT2 R | Neugarten / Ruch / Ligonnet | Elf Haberthur Racing | 13th |
| 23.8.1998 | 1000 km Suzuka | 61 | 993 GT2 R | Graham / Smadja / Kimoto | Elf Haberthur Racing | 19th |
| 23.8.1998 | 1000 km Suzuka | 62 | 993 GT2 | Sick / Hunkeler / Clavuot | Stadler Motorsport | DNF |
| 23.8.1998 | 1000 km Suzuka | 65 | 993 GT2 R | Stretton / Hane / Harada | Konrad Motorsport | DNF |
| 23.8.1998 | 1000 km Suzuka | 66 | 993 GT2 | Konrad / Heger / Sallaz | Konrad Motorsport | 12th |
| 23.8.1998 | 1000 km Suzuka | 69 | 993 GT2 | Vuillaume / Ried / Jurasz | Proton Competition | 17th |
| 23.8.1998 | 1000 km Suzuka | 76 | 993 GT2 R | Smith / Suzuki | Seikel Motorsport | 16th |
| 23.8.1998 | 1000 km Suzuka | 87 | 993 GT2 | Marchner / Sakurai / Yoshikawa | Seikel Motorsport | 23rd |
| 23.8.1998 | 1000 km Suzuka | 110 | 993 GT2 | Asou / Ishikawa / Hinoi | Ability | DQ |
| 23.8.1998 | 1000 km Suzuka | 170 | 993 GT2 | Ishibashi / van Schoote / Nodi | Team Gaikokuya | 20th |