| 23.8.1998 | British GT Silverstone | 0 | 911 GT1 | Greasley / Wallinder | Blue Coral/Slick 50/Quaker State | DNF |
| 23.8.1998 | 6 h Watkins Glen | 07 | 911 Carrera RSR | Law / Marshall | G & W Motorsports | 27th |
| 23.8.1998 | British GT Silverstone | 9 | 993 GT1 | Masarati / Mortimer | RMA Driving Sensations | 13th |
| 23.8.1998 | 6 h Watkins Glen | 22 | 993 Carrera RSR | Pobst / Borcheller | Alex Job Racing | 13th |
| 23.8.1998 | 6 h Watkins Glen | 23 | 993 Carrera RSR | Collins / Havens / Wagner | Alex Job Racing | 14th |
| 23.8.1998 | 6 h Watkins Glen | 25 | 911 Carrera RSR | White / Cilli / Goolsby | Alex Job Racing | 16th |
| 23.8.1998 | British GT Silverstone | 33 | 993 GT2 R | Saunders / Saunders | Gaumont/Parr Motorsport | DNF |
| 23.8.1998 | British GT Silverstone | 35 | 993 GT2 R | Barrett / Lockie | G-Force Motorsport | 7th |
| 23.8.1998 | 6 h Watkins Glen | 37 | 968 GTR | Strange | GTR Motorsports | 29th |
| 23.8.1998 | 6 h Watkins Glen | 38 | 911 GT1 Evo | Boutsen / Kelleners | Champion Motors | 3rd |
| 23.8.1998 | British GT Silverstone | 40 | 993 GT2 R | Day / Jordan | P K Sport | 4th |
| 23.8.1998 | British GT Silverstone | 42 | 993 GT2 | Konig / Phillips | P K Sport | NC |
| 23.8.1998 | British GT Silverstone | 46 | 964 Carrera RSR 3.8 | Lucas / Osborne | P K Sport | NC |
| 23.8.1998 | British GT Silverstone | 50 | 993 GT2 R | Morrison / Lister | Blue Coral/Slick 50/Quaker State | DNS |
| 23.8.1998 | 6 h Watkins Glen | 52 | 911 Carrera RSR | Russell / Stitt | Team Protosport GT | DNA |
| 23.8.1998 | British GT Silverstone | 58 | 911 Turbo | Wellings / Guest | Wellings/Guest | 16th |
| 23.8.1998 | 6 h Watkins Glen | 76 | 993 Carrera RSR | Argetsinger | Team A.R.E. | 31st |
| 23.8.1998 | 6 h Watkins Glen | 86 | 993 Carrera RSR | Tremblay / Marshall | G & W Motorsports | 24th |
| 23.8.1998 | 6 h Watkins Glen | 98 | 993 Carrera RSR | Pumpelly / Kicak / Kimbrough | North American Marien Group | 18th |
| 23.8.1998 | 6 h Watkins Glen | 99 | 993 GT2 | O'Steen / Schumacher | Schumacher Racing | 20th |
| 30.8.1998 | CDN GT Mosport | 00 | 911 GT1 Evo | Klaus Bytzek | BMS Race Team | 2nd |
| 30.8.1998 | CDN GT Mosport | 09 | 944 Turbo | Rick Franczak | | DNA |
| 30.8.1998 | CDN GT Mosport | 15 | 911 | Blair Killoran | | DNA |
| 30.8.1998 | CDN GT Mosport | 88 | 944 Turbo | Bob Munro | | 13th |
| 30.8.1998 | CDN GT Mosport | 91 | 993 GT2 Evo | Harry Bytzek | | 4th |
| 30.8.1998 | CDN GT Mosport | 96 | 968 | Ray Arbesman | Heimrath Porsche Racing | DNA |
| 30.8.1998 | CDN GT Mosport | 115 | 944 Turbo | John McAulay | | DNA |
| 30.8.1998 | CDN GT Mosport | 139 | 993 Carrera RSR | Rudy Bartling | | DNA |
| 30.8.1998 | CDN GT Mosport | 174 | 911 | Ulrich Furtmair | | 18th |
| 30.8.1998 | CDN GT Mosport | 181 | 944 Turbo | Vito Scavone | | DNA |
| 30.8.1998 | CDN GT Mosport | 196 | 968 | Ludwig Heimrath | Heimrath Porsche Racing | 12th |
| 30.8.1998 | CDN GT Mosport | 201 | 911 GT1 | Joel Reiser | Reiser-Callas | DNA |
| 30.8.1998 | CDN GT Mosport | 661 | 911 Turbo | Eric Boisvert | Rivard Competition | 10th |
| 6.9.1998 | 24 h Zolder | 1 | 993 GT2 | Dupont / Taels / Kumpen | FINA - GLPK Racing | 3rd |
| 6.9.1998 | SM GTR Knutstorp | 2 | 993 Carrera RSR | Hubert Berg | Hubert Bergh | 3rd/2nd |
| 6.9.1998 | 24 h Zolder | 2 | 911 | Snijers / Thiers / Vosse | FINA - GLPK Racing | 4th |
| 6.9.1998 | SM GTR Knutstorp | 3 | 993 Cup RS | Lennart Pehrson | Lennart Pehrson | 4th/4th |
| 6.9.1998 | 24 h Zolder | 4 | 993 GT | Beilke / Althoff / Irmgratz | | 7th |
| 6.9.1998 | SM GTR Knutstorp | 4 | Boxster 986 GTR | Henrik Roos | JTI Motorsport | DNF/DNF |
| 6.9.1998 | 500 km Donington | 5 | 911 GT1-98 | Scheld / Hahne | Zakspeed Racing | 6th |
| 6.9.1998 | 24 h Zolder | 5 | 993 | Vanierschot / Wauters / Wauters | AD Sport | 5th |
| 6.9.1998 | 24 h Zolder | 6 | 911 | Bruynoghe / Kumpen / Longin | AD Sport | 19th |
| 6.9.1998 | 500 km Donington | 6 | 911 GT1-98 | Bartels / Angelelli | Zakspeed Racing | NC |
| 6.9.1998 | 500 km Donington | 7 | 911 GT1-98 | McNish / Dalmas | Porsche AG | 3rd |
| 6.9.1998 | SM GTR Knutstorp | 7 | 993 GT2 JPS | Bo Jonasson | Bo Jonasson | 5th/8th |
| 6.9.1998 | 24 h Zolder | 8 | 993 | Van Vaerenbergh / Ramon / Janssen | MRS - Janssen Jaak | raced |
| 6.9.1998 | SM GTR Knutstorp | 8 | 944 Turbo | Kenneth Olsson | Kenneth Olsson | DNF/14th |
| 6.9.1998 | 500 km Donington | 8 | 911 GT1-98 | Alzen / Müller | Porsche AG | 4th |
| 6.9.1998 | 24 h Zolder | 9 | 993 | Boutsen / Goossens / Huisman | Van de Venne Geert | 1st |
| 6.9.1998 | SM GTR Knutstorp | 10 | 944 Turbo | Peter Eriksson | Peter Eriksson | DNF/13th |
| 6.9.1998 | 24 h Zolder | 10 | 993 | Grootaers / Schreurs / De Troch | Peka Racing | 24th |
| 6.9.1998 | 24 h Zolder | 11 | 911 | Moonen / Bogemans / Vancraeynest | Peka Racing | 27th |
| 6.9.1998 | SM GTR Knutstorp | 12 | 944 Turbo | Stefan Pfister | Stefan Pfister | 6th/6th |
| 6.9.1998 | 24 h Zolder | 16 | 993 | Thiers / Jacobs / Vergaelen | AD Sport | 14th |
| 6.9.1998 | 24 h Zolder | 17 | GT2 | Raes / Lievens / Meers | Uitgeerts Gerard | raced |
| 6.9.1998 | 24 h Zolder | 18 | 911 Carrera RSR | Kurris / Vetters / Meulders | Renard Guy | 18th |
| 6.9.1998 | 24 h Zolder | 19 | 911 Supercup | Van Rossem / Claes / Tavernier | | raced |
| 6.9.1998 | 24 h Zolder | 20 | 993 Carrera RS | Philips / Vollebergh / Willems | Van Gucht Luc | raced |
| 6.9.1998 | 24 h Zolder | 29 | 911 | Loix / Penders / Verheyen | Gabriels Jan | raced |
| 6.9.1998 | 24 h Zolder | 30 | 911 | De Becker / Sluyters / Buytaert | Theunissen Rob | raced |
| 6.9.1998 | 24 h Zolder | 31 | 993 | Schoonbroodt / Close / Van de Wauwer | Vaesen Raf | raced |
| 6.9.1998 | SM GTR Knutstorp | 33 | 968 Turbo RS | Anders Roos | Anders Roos | 13th/DNS |
| 6.9.1998 | 24 h Zolder | 41 | 964 | Jegers / Daniels / Van Mol | Maes Eddy | 8th |
| 6.9.1998 | 24 h Zolder | 45 | 964 | Bastiaens / Dujardyn / de Craene | René Van Hove | raced |
| 6.9.1998 | SM GTR Knutstorp | 46 | 911 Carrera RSR | Peter Gutniak | Porsche Sports Club | 7th/7th |
| 6.9.1998 | 500 km Donington | 56 | 993 GT2 R | Ortelli / Hürtgen | Roock Racing | 21st |
| 6.9.1998 | 500 km Donington | 57 | 993 GT2 | Eichmann / Hezemans / Ahrlé | Roock Racing | 20th |
| 6.9.1998 | 500 km Donington | 58 | 993 GT2 | Robinson / Price | Roock Sportsystem | DQ |
| 6.9.1998 | 500 km Donington | 60 | 993 GT2 R | Neugarten / Ruch / Spinelli | Elf Haberthur Racing | DNF |
| 6.9.1998 | 500 km Donington | 61 | 993 GT2 R | Graham / Smadja / Clérico | Elf Haberthur Racing | 19th |
| 6.9.1998 | 500 km Donington | 62 | 993 GT2 | Rohr / Sick | Stadler Motorsport | DNF |
| 6.9.1998 | 500 km Donington | 63 | 993 GT2 | Trunk / Müller | Krauss Race Sports International | 15th |
| 6.9.1998 | SM GTR Knutstorp | 64 | 993 Carrera RS | Ulf Stenborg | Porsche Sports Club | 9th/10th |
| 6.9.1998 | 500 km Donington | 65 | 993 GT2 R | Stretton / Seiler | Konrad Motorsport | 13th |
| 6.9.1998 | 500 km Donington | 66 | 993 GT2 | Konrad / Heger | Konrad Motorsport | 9th |
| 6.9.1998 | 500 km Donington | 69 | 993 GT2 | Vuillaume / Ried | Proton Competition | 17th |
| 6.9.1998 | SM GTR Knutstorp | 69 | 911 Cup | Mikael Frisk | Mikael Frisk | 10th/11th |
| 6.9.1998 | 500 km Donington | 76 | 993 GT2 R | Smith / Véroux / Cohen-Olivar | Seikel Motorsport | DNF |
| 6.9.1998 | 24 h Zolder | 76 | 993 | Boxoen / Deruwe / Troubleyn | | raced |
| 6.9.1998 | 500 km Donington | 81 | 993 GT2 | Kaufmann / Ligonnet | Freisinger Motorsport | 11th |
| 6.9.1998 | SM GTR Knutstorp | 85 | 993 GT2 | Christer Steen | Christer Steen | 11th/DNF |
| 6.9.1998 | 24 h Zolder | 86 | 993 GT2 | Van der Pluym / Grammet / De Veirman | Bienstman Didier | raced |
| 6.9.1998 | 24 h Zolder | 93 | 993 | Daems / Leinders / Olivier | | 2nd |
| 6.9.1998 | SM GTR Knutstorp | 94 | 911 Carrera RSR 3.8 | Magnus Wallinder | Strandell | 2nd/1st |
| 6.9.1998 | 500 km Donington | 96 | 993 GT2 | Felbermayr, Sr. / Felbermayr, Jr. | Proton Competition | 16th |
| 6.9.1998 | 500 km Donington | 98 | 993 GT2 | Maassen / Warnock / Nearn | Cirtek Motorsport | 18th |
| 7.9.1998 | CDN GT Mosport CRDA | 00 | 911 GT1 Evo | Klaus Bytzek | BMS Race Team | 1st |
| 7.9.1998 | CDN GT Mosport CRDA | 91 | 993 GT2 Evo | Harry Bytzek | | 3rd |
| 7.9.1998 | CDN GT Mosport CRDA | 139 | 993 Carrera RSR | Franczak / Bartling | | DNS |
| 7.9.1998 | CDN GT Mosport CRDA | 174 | 911 | Ulrich Furtmair | | 21st |
| 7.9.1998 | CDN GT Mosport CRDA | 181 | 968 | Vito Scavone | | 26th |
| 7.9.1998 | CDN GT Mosport CRDA | 196 | 968 | Ludwig Heimrath | Heimrath Porsche Racing | 22nd |
| 7.9.1998 | CDN GT Mosport CRDA | 201 | 911 GT1 | Joel Reiser | Reiser-Callas | 20th |
| 7.9.1998 | CDN GT Mosport CRDA | 207 | 968 | Ray Arbesman | Heimrath Porsche Racing | 14th |
| 7.9.1998 | CDN GT Mosport CRDA | 419 | 911 | Jim Harrison | | DNS |
| 12.9.1998 | Motegi GT | 9 | 993 Carrera RSR 3.8 | Hane / Kawano | Team Daikokuya | DNF |
| 12.9.1998 | Motegi GT | 10 | 993 GT2 | Asou / Ishikawa | Ability | 20th |
| 12.9.1998 | Motegi GT | 30 | 993 GT2 | Yamada / Okada | Team Take One | 9th |
| 12.9.1998 | Motegi GT | 51 | 993 Carrera RSR 3.8 | Ishihara / Iketani | Cobra Racing Team | 18th |
| 12.9.1998 | Motegi GT | 99 | 993 Carrera RSR 3.8 | Hioki / Takahashi | Team Daikokuya | 19th |