| 7.9.2008 | Brasil GT3 Rio de Janeiro | 5 | 997 GT3 Cup | Fittipaldi / Brito | WB Motorsports | 2nd/8th |
| 7.9.2008 | ADAC GT Lausitzring | 14 | 997 GT3 Cup S | Häring / Steiner | Mühlner Motorsport | 6th/7th |
| 7.9.2008 | ADAC GT Lausitzring | 15 | 997 GT3 Cup S | Bergmeister / Bergmeister | Mühlner Motorsport | 1st/1st |
| 7.9.2008 | FFSA GT Albi | 34 | 997 GT3 RSR | Champeau / Loeb | Pro GT | 15th/22nd |
| 7.9.2008 | ADAC GT Lausitzring | 62 | 997 GT3 Cup | Speck / Renauer | Hermann Speck | 12th/14th |
| 14.9.2008 | FIA GT3 Brno | 6 | 997 GT3 Cup S | Williams / Ashburn | Trackspeed | 8th/14th |
| 14.9.2008 | FIA GT3 Brno | 7 | 997 GT3 Cup S | Nuttal / Shelley | Trackspeed | 24th/26th |
| 14.9.2008 | Italian GT Misano | 12 | 997 GT3 RSR | Wolf Henzler / Francisco Cruz Martins | Autorlando Sport | 1st/29th |
| 14.9.2008 | Italian GT Misano | 14 | 997 GT3 RSR | Pilet / Roda | Autorlando Sport | 2nd/14th |
| 14.9.2008 | 300 km Motegi | 26 | 996 GT3-RS | Taniguchi / Yamaji | Team Taisan With Nishizawa | 20th |
| 14.9.2008 | 300 km Motegi | 27 | 996 GT3-RSR | Inoue / Jin-Woo | Team Shadow | 34th |
| 14.9.2008 | 1000 km Silverstone | 27 | RS Spyder Evo | Lienhard / Theys / Lammers | Horag Racing | 9th |
| 14.9.2008 | 1000 km Silverstone | 31 | RS Spyder Evo | Elgaard / Nielsen | Team Essex | 12th |
| 14.9.2008 | 300 km Motegi | 33 | 997 GT3 RSR | Kageyama / Kinoshita | Hankook KTR | 22nd |
| 14.9.2008 | 1000 km Silverstone | 34 | RS Spyder Evo | van Merksteijn / Verstappen | Van Merksteijn Motorsport | 5th |
| 14.9.2008 | FIA GT3 Brno | 35 | 997 GT3 Cup S | Forsten / Penders | Prospeed Competition | 16th/18th |
| 14.9.2008 | FIA GT3 Brno | 36 | 997 GT3 Cup S | Loix / Lémeret | Prospeed Competition | DNF/DNF |
| 14.9.2008 | FIA GT3 Brno | 39 | 997 GT3 Cup S | Thomas / Jiřík | Muehlner Motorsport | DNF/15th |
| 14.9.2008 | FIA GT3 Brno | 40 | 997 GT3 Cup S | | Muehlner Motorsport | unused |
| 14.9.2008 | GT4 Euro Brno | 53 | 997 GT3 | Mark Mayall | | 11th/6th/6th |
| 14.9.2008 | 2 h Brno | 59 | 997 GT3 RSR | Williams / Ashburn | Trackspeed Racing | 21st |
| 14.9.2008 | 2 h Brno | 60 | 997 GT3 RSR | Forsten / Palttala | Prospeed Competition | 13th |
| 14.9.2008 | 2 h Brno | 61 | 997 GT3 RSR | Westbrook / Collard | Prospeed Competition | DNF |
| 14.9.2008 | 300 km Motegi | 70 | 996 GT3-RS | Yamagishi / Ishibashi | Team Gaikokuya | 37th |
| 14.9.2008 | 1000 km Silverstone | 75 | 997 GT3 RSR | Balandras / Lecourt | Imsa Performance Matmut | DNF |
| 14.9.2008 | 1000 km Silverstone | 76 | 997 GT3 RSR | Narac / Lietz | Imsa Performance Matmut | DNF |
| 14.9.2008 | 1000 km Silverstone | 77 | 997 GT3 RSR | Davison / Lieb | Team Felbermayr-Proton | 27th |
| 14.9.2008 | 2 h Brno | 79 | 997 GT3 RSR | Janák / Bergmeister | K plus K Motorsport | 10th |
| 14.9.2008 | 2 h Brno | 88 | 997 GT3 RSR | Konôpka / Reindler | ARC Bratislava | NC |
| 14.9.2008 | 1000 km Silverstone | 88 | 997 GT3 RSR | Ried / Felbermayr, Jr. / Felbermayr, Sr. | Team Felbermayr-Proton | 30th |
| 14.9.2008 | 1000 km Silverstone | 91 | 997 GT3 RSR | Nielsen / Werner | Farnbacher Racing | DNF |
| 14.9.2008 | 1000 km Silverstone | 95 | 997 GT3 RSR | Daniels / Griffin / Bamford | James Watt Automotive | DNF |
| 14.9.2008 | Italian GT Misano | 103 | 997 GT3 Cup | Cappelletti / della Volta | Promospeed | 18th/30th |
| 14.9.2008 | Italian GT Misano | 105 | 997 GT3 Cup | Petrini / Crocioni | AGR Motorsport | 28th/23rd |
| 14.9.2008 | Italian GT Misano | 107 | 997 GT3 Cup | Orsero / Campanello | Happy Racer | 27th/18th |
| 14.9.2008 | 300 km Motegi | 110 | Boxster 986 | Mitsusada / Ikeda | Arktech Motorsports | 21st |
| 14.9.2008 | 300 km Motegi | 111 | Boxster 986 | Kurosawa / Koizumi | Arktech Motorsports | 35th |
| 14.9.2008 | Italian GT Misano | 111 | 997 GT3 Cup | de Nora / Bellini | Bonaldi Tech | 21st/19th |
| 14.9.2008 | Italian GT Misano | 112 | 997 GT3 Cup | Sada / Sala | Autorlando Sport | 20th/24th |
| 14.9.2008 | Italian GT Misano | 115 | 997 GT3 Cup | Greco / Morini | Ciesse Motorsport | 19th/DNF |
| 14.9.2008 | 300 km Motegi | 118 | 996 GT3-RS | Kurihara / Miyamoto | Tomei Sports | 38th |
| 14.9.2008 | Italian GT Misano | 124 | 996 GT3 Cup | Bocellari / Urbani | AGR Motorsport | DNF/DNS |
| 14.9.2008 | Italian GT Misano | 127 | 997 GT3 Cup | Castaldi / Brambati | AB Motorsport/Antonelli Motorsport | DNF/DNF |
| 20.9.2008 | 1000 km Miller | 27 | 997 GT3 Cup | O'Connell / Roush | O'Connell Racing | 31st |
| 20.9.2008 | 1000 km Miller | 65 | 997 GT3 Cup | Gutierrez / Potter / Stanton | TRG/Riegel Autosport | 29th |
| 20.9.2008 | 1000 km Miller | 66 | 997 GT3 Cup | Pumpelly / Ballou / Sellers | TRG | 18th |
| 20.9.2008 | 1000 km Miller | 67 | 997 GT3 Cup | Lally / Long / George, Jr. | TRG | 14th |
| 20.9.2008 | 1000 km Miller | 86 | 997 GT3 Cup | Lux / Keen / Farnbacher | Farnbacher Loles Racing | 25th |
| 20.9.2008 | 1000 km Miller | 87 | 997 GT3 Cup | Werner / Miller / Henzler | Farnbacher Loles Racing | 19th |
| 20.9.2008 | 1000 km Miller | 88 | 997 GT3 Cup | Lacey / Farnbacher / Henzler | Farnbacher Loles Racing | 20th |
| 21.9.2008 | GT Open Magny-Cours | 1 | 997 GT3 RSR | Lietz / Roda | Autorlando | 5th/1st |
| 21.9.2008 | Belcar Spa Francorchampagne | 1 | 997 GT3 Cup S | Franchi / Soulet | GPR Pino Racing | 6th |
| 21.9.2008 | GT Open Magny-Cours | 2 | 997 GT3 RSR | Zonca / Belicchi | Autorlando | 6th/2nd |
| 21.9.2008 | Britcar 24 h Silverstone | 6 | 997 GT3 RSR | Sumpter / Slater / Purdie | Paragon Motorsport | 1st |
| 21.9.2008 | Britcar 24 h Silverstone | 8 | 997 GT3 Cup | Jones / Jones / Jones / Jones / Jones | Eurotech Motorsport | DNF |
| 21.9.2008 | GT Open Magny-Cours | 9 | 997 GT3 RSR | Miguel Ángel de Castro / Antonio Chacón | Detector Drivex Porsche | 22nd/6th |
| 21.9.2008 | Belcar Spa Francorchampagne | 11 | 997 GT3 Cup S | Couwberghs / Maes | NGT Racing | 2nd |
| 21.9.2008 | ADAC GT Sachsenring | 14 | 997 GT3 Cup S | Bleekemolen / Bleekemolen | Mühlner Motorsport | 4th/7th |
| 21.9.2008 | ADAC GT Sachsenring | 15 | 997 GT3 Cup S | Bergmeister / Bergmeister | Mühlner Motorsport | 6th/6th |
| 21.9.2008 | ADAC GT Sachsenring | 16 | 997 GT3 Cup S | Van De Laar / Bleekemolen | Mühlner Motorsport | DNF/12th |
| 21.9.2008 | GT Open Magny-Cours | 22 | 996 GT3-RSR | Caffi / Fratti | Autorlando | 11th/9th |
| 21.9.2008 | GT Open Magny-Cours | 25 | 996 GT3-RSR | Monteiro / Monteiro | Estoril Racing | 14th/DNF |
| 21.9.2008 | ADAC GT Sachsenring | 27 | 997 GT3 Cup | Langen / Melkus | Buchbinder Racing by emotional engineering | 11th/DNF |
| 21.9.2008 | Britcar 24 h Silverstone | 30 | 996 GT3 Cup | Lockie / White / Scott / Harris | Strata UK Ltd | 30th |
| 21.9.2008 | ADAC GT Sachsenring | 39 | 997 GT3 Cup | Dragoun / Zoltan | G-Private-Racing | 15th/16th |
| 21.9.2008 | ADAC GT Sachsenring | 40 | 997 GT3 Cup S | Zeltner / Peham | G-Private-Racing | 8th/11th |
| 21.9.2008 | Britcar 24 h Silverstone | 64 | 968 | Garrod / Ballentyne / Radford / Erceg | Country Classics / with BBG Racing | 31st |
| 21.9.2008 | Belcar Spa Francorchampagne | 123 | 996 GT3 Cup | van Oost / Maes | Powercars Racing | DNF |
| 21.9.2008 | Belcar Spa Francorchampagne | 217 | 996 Bi-Turbo GT2-R | Bouillon / Voets | McDonald's Racing | DNF |
| 21.9.2008 | Belcar Spa Francorchampagne | 250 | 997 GT3 Cup | Lagrange / Nelissen-Grade | First Motorsport | 12th |
| 21.9.2008 | Belcar Spa Francorchampagne | 259 | 997 GT3 Cup | Vanhanen / Nurminen | Westend Racing | 14th |
| 21.9.2008 | Belcar Spa Francorchampagne | 264 | 997 GT3 Cup | van Hover / Langeberg | Speedlover | NC |
| 28.9.2008 | Spanish GT Valencia | 9 | 997 GT3 RSR | Amaral / de Castro | Detector Drivex Porsche | 3rd/4th |
| 28.9.2008 | Spanish GT Valencia | 33 | 997 GT3 RSR | del Noce / Bastos | ASM Team | 7th/DNF |
| 28.9.2008 | Spanish GT Valencia | 35 | 997 GT3 Cup | Gellweiler / Peres | Detector Drivex Porsche | 10th/9th |
| 4.10.2008 | Petit Le Mans | 5 | RS Spyder Evo | Briscoe / Castroneves | Penske Motorsports, Inc. | 4th |
| 4.10.2008 | Petit Le Mans | 6 | RS Spyder Evo | Collard / Maassen / Long | Penske Racing | 6th |
| 4.10.2008 | Petit Le Mans | 7 | RS Spyder Evo | Bernhard / Dumas | Penske Racing | 5th |
| 4.10.2008 | Petit Le Mans | 16 | RS Spyder Evo | Dyson / Smith | Dyson Racing Team | 9th |
| 4.10.2008 | Petit Le Mans | 18 | 997 GT3 RSR | Pastorelli / Basseng / Pastorelli | VICI Racing | 23rd |
| 4.10.2008 | Petit Le Mans | 20 | RS Spyder Evo | Leitzinger / Franchitti / Lally | Dyson Racing Team | 7th |
| 4.10.2008 | Petit Le Mans | 44 | 997 GT3 RSR | Law / Pechnik / Neiman | Flying Lizard Motorsports 44 | 19th |
| 4.10.2008 | Petit Le Mans | 45 | 997 GT3 RSR | Bergmeister / Henzler / Lieb | Flying Lizard Motorsports | 13th |
| 4.10.2008 | Petit Le Mans | 46 | 997 GT3 RSR | Pilet / van Overbeek | Flying Lizard Motorsports | 21st |
| 4.10.2008 | Petit Le Mans | 87 | 997 GT3 RSR | Werner / Miller / Hardt | Farnbacher Loles Racing | 28th |
| 5.10.2008 | GT Open Monza | 1 | 997 GT3 RSR | Lietz / Roda | Autorlando | 8th/1st |
| 5.10.2008 | GT Open Monza | 2 | 997 GT3 RSR | Zonca / Belicchi | Autorlando | 6th/DNF |
| 5.10.2008 | FIA GT3 Nogaro | 6 | 997 GT3 Cup S | Williams / Ashburn | Trackspeed | 23rd/8th |
| 5.10.2008 | FIA GT3 Nogaro | 7 | 997 GT3 Cup S | Nuttal / Shelley | Trackspeed | DNF/28th |
| 5.10.2008 | GT Open Monza | 9 | 997 GT3 RSR | Miguel Ángel de Castro / Antonio Chacón | Detector Drivex Porsche | 5th/7th |
| 5.10.2008 | FIA GT3 Nogaro | 35 | 997 GT3 Cup S | Penders / Lamot | Prospeed Competition | 22nd/16th |
| 5.10.2008 | FIA GT3 Nogaro | 36 | 997 GT3 Cup S | Loix / Lémeret | Prospeed Competition | 7th/13th |
| 5.10.2008 | GT Open Monza | 37 | 997 GT3 RSR | Edwards / Moro | Hisaq Competition | 14th/DNF |
| 5.10.2008 | FIA GT3 Nogaro | 39 | 997 GT3 Cup S | Thomas / Hemroulle | Muehlner Motorsport | 14th/DNF |
| 5.10.2008 | GT Open Monza | 39 | 997 GT3 RSR | Petrobelli / Ricci | Konrad Motorsport | DNF/DNF |
| 5.10.2008 | FIA GT3 Nogaro | 40 | 997 GT3 Cup S | Vosse / Jiřík | Muehlner Motorsport | 11th/5th |
| 5.10.2008 | 2 h Nogaro | 59 | 997 GT3 RSR | Williams / Ashburn | Trackspeed Racing | 21st |
| 5.10.2008 | 2 h Nogaro | 60 | 997 GT3 RSR | Forsten / Palttala | Prospeed Competition | DNF |
| 5.10.2008 | 2 h Nogaro | 61 | 997 GT3 RSR | Davison / Westbrook | Prospeed Competition | 9th |
| 12.10.2008 | FFSA GT Magny-Cours | 37 | 996 GT3-RSR | Monteiro / Monteiro | Estoril Racing | 20th/22nd |