| 4.5.2008 | Spanish GT Jarama | 9 | 997 GT3 RSR | Amaral / de Castro | Detector Drivex Porsche | 4th/5th |
| 4.5.2008 | Spanish GT Jarama | 18 | 996 GT3-RSR | Caternet / Amorim | Noel del Bello Racing | 16th/20th |
| 4.5.2008 | 500 km Fuji | 26 | 996 GT3-RS | Yamaji / Taniguchi | Team Taisan With Nishizawa | DNF |
| 4.5.2008 | 500 km Fuji | 27 | 996 GT3-RSR | Inoue / Jin-Woo | Team Shadow | 29th |
| 4.5.2008 | 500 km Fuji | 33 | 997 GT3 RSR | Kageyama / Kinoshita | Hankook KTR | 31st |
| 4.5.2008 | Spanish GT Jarama | 33 | 997 GT3 RSR | del Noce / Bastos | ASM Team | 7th/DNF |
| 4.5.2008 | Spanish GT Jarama | 34 | 997 GT3 Cup | Castro / Espinosa | Detector Drivex Porsche | 14th/14th |
| 4.5.2008 | Spanish GT Jarama | 35 | 997 GT3 Cup | Gellweiler / Peres | Detector Drivex Porsche | 13th/15th |
| 4.5.2008 | 500 km Fuji | 70 | 996 GT3-RS | Yamagishi / "Oyaji" | Team Gaikokuya | 35th |
| 4.5.2008 | 500 km Fuji | 111 | Boxster 986 | Koizumi / Kurosawa | Arktech Motorsports | 28th |
| 4.5.2008 | 500 km Fuji | 118 | 996 GT3-RS | Miyamoto / Kurihara | Tomei Sports | 27th |
| 10.5.2008 | Belcar Dijon | 1 | 997 GT3 Cup S | Franchi / Soulet | GPR Pino Racing | 1st/1st |
| 10.5.2008 | Belcar Dijon | 11 | 997 GT3 Cup S | Couwberghs / Maes | NGT Racing | 3rd/2nd |
| 10.5.2008 | Belcar Dijon | 123 | 996 GT3 Cup | van Oost / Maes | Powercars Racing | 16th/12th |
| 10.5.2008 | Belcar Dijon | 249 | 997 GT3 Cup | Donovan / Richings | In2Racing | 14th/17th |
| 10.5.2008 | Belcar Dijon | 250 | 997 GT3 Cup | Lagrange / Nelissen-Grade | First Motorsport | 12th/9th |
| 10.5.2008 | Belcar Dijon | 264 | 997 GT3 Cup | van Hover / Langeberg | Speedlover | 11th/13th |
| 11.5.2008 | Brasil GT3 São Paulo | 5 | 997 GT3 Cup | Hermann / Brito | WB Motorsports | DNS |
| 11.5.2008 | Brasil GT3 São Paulo | 6 | 997 GT3 Cup | Fittipaldi / Fittipaldi | WB Motorsports | 9th/9th |
| 11.5.2008 | Italian GT Mugello 1 | 11 | 997 GT3 RSR | "Vic" / "Gion" | Coggiola Victor Racing Team | 16th/16th |
| 11.5.2008 | Italian GT Mugello 1 | 12 | 997 GT3 RSR | Wolf Henzler / Francisco Cruz Martins | Autorlando Sport | 7th/1st |
| 11.5.2008 | ADAC GT Oschersleben | 15 | 997 GT3 Cup S | Bergmeister / Bergmeister | Mühlner Motorsport | 2nd/3rd |
| 11.5.2008 | ADAC GT Oschersleben | 16 | 997 GT3 Cup S | Bleekemolen / Van De Laar | Mühlner Motorsport | DNF/15th |
| 11.5.2008 | Italian GT Mugello 1 | 18 | 996 GT3-RS | Meneghello / Valentini | Engineering Durango | DNF/18th |
| 11.5.2008 | ADAC GT Oschersleben | 27 | 997 GT3 Cup | Langen / Hannawald | Schnabl Engineering | 17th/DNF |
| 11.5.2008 | 1000 km Spa | 27 | RS Spyder Evo | Lienhard / Theys / Lammers | Horag Racing | 7th |
| 11.5.2008 | ADAC GT Oschersleben | 28 | 997 GT3 Cup | Lauck / Richter | JvO Autosport | 19th/13th |
| 11.5.2008 | 1000 km Spa | 31 | RS Spyder Evo | Elgaard / Nielsen | Team Essex | 8th |
| 11.5.2008 | ADAC GT Oschersleben | 33 | 997 GT3 Cup S | Stippler / Ebeling | Heico Motorsport | 15th/DNF |
| 11.5.2008 | FFSA GT Dijon | 34 | 997 GT3 RSR | Champeau / Blugeon | Pro GT | 20th/25th |
| 11.5.2008 | 1000 km Spa | 34 | RS Spyder Evo | Verstappen / van Merksteijn | Van Merksteijn Motorsport | 6th |
| 11.5.2008 | FFSA GT Dijon | 35 | 996 GT3-RSR | Loger / Mouez | Nourry Compétition | 18th/17th |
| 11.5.2008 | FFSA GT Dijon | 36 | 996 GT3-RSR | Fournet / Corbel | RMS Emeraude Racing | DNA |
| 11.5.2008 | FFSA GT Dijon | 37 | 996 GT3-RSR | Monteiro / Monteiro | Estoril Racing | 25th/DNS |
| 11.5.2008 | ADAC GT Oschersleben | 39 | 997 GT3 Cup | Ellinger / Dragoun | G-Private-Racing | 18th/18th |
| 11.5.2008 | ADAC GT Oschersleben | 40 | 997 GT3 Cup | Peham / Schmitter | G-Private-Racing | 16th/16th |
| 11.5.2008 | FFSA GT Dijon | 50 | 997 GT3 Cup | Brouard / Stépec | RMS Emeraude Racing | 26th/22nd |
| 11.5.2008 | Brasil GT3 São Paulo | 56 | 997 GT3 Cup | Gresse / Mesquita | WB Motorsport | 7th/11th |
| 11.5.2008 | FFSA GT Dijon | 63 | 997 GT3 Cup | Lelièvre / Polette | IMSA | 23rd/18th |
| 11.5.2008 | FFSA GT Dijon | 67 | 997 GT3 Cup | Pont / Bachelier | GCR | 22nd/21st |
| 11.5.2008 | 1000 km Spa | 75 | 997 GT3 RSR | Balandras / Lecourt | IMSA Performance Matmut | DNF |
| 11.5.2008 | 1000 km Spa | 76 | 997 GT3 RSR | Narac / Lietz | IMSA Performance Matmut | 22nd |
| 11.5.2008 | 1000 km Spa | 77 | 997 GT3 RSR | Davison / Lieb | Team Felbermayr-Proton | 18th |
| 11.5.2008 | FFSA GT Dijon | 80 | 997 GT3 Cup | | Pro GT | DNA |
| 11.5.2008 | 1000 km Spa | 88 | 997 GT3 RSR | Ried / Felbermayr, Jr. / Felbermayr, Sr. | Team Felbermayr-Proton | 19th |
| 11.5.2008 | 1000 km Spa | 91 | 997 GT3 RSR | Nielsen / Westbrook / Simonsen | Farnbacher Racing | DNF |
| 11.5.2008 | 1000 km Spa | 95 | 997 GT3 RSR | Daniels / Palttala / Sugden | James Watt Automotive | 25th |
| 11.5.2008 | Italian GT Mugello 1 | 103 | 997 GT3 Cup | Cappelletti / Pozzi | Promospeed | 21st/22nd |
| 11.5.2008 | Italian GT Mugello 1 | 105 | 997 GT3 Cup | Maranelli / Petrini | AGR Motorsport | 23rd/DNF |
| 11.5.2008 | Italian GT Mugello 1 | 106 | 997 GT3 Cup | Fecchio / Bicciato | GDL Racing | 22nd/24th |
| 11.5.2008 | Italian GT Mugello 1 | 107 | 997 GT3 Cup | Campanello / Orsero | Happy Racer | DNF/DNF |
| 11.5.2008 | Italian GT Mugello 1 | 111 | 997 GT3 Cup | Bellini / de Nora | Bonaldi Tech | 19th/17th |
| 11.5.2008 | Italian GT Mugello 1 | 112 | 997 GT3 Cup | Sala / Sada | Autorlando Sport | 31st/19th |
| 17.5.2008 | 250 miles Laguna Seca | 27 | 997 GT3 Cup | O'Connell / Roush | O'Connell Racing | 19th |
| 17.5.2008 | 250 miles Laguna Seca | 64 | 997 GT3 Cup | Lowe / Pace | TRG | 41st |
| 17.5.2008 | 250 miles Laguna Seca | 65 | 997 GT3 Cup | Stanton / Maher | TRG/Riegel Autosport | 21st |
| 17.5.2008 | 250 miles Laguna Seca | 66 | 997 GT3 Cup | Miller / Ballou | TRG | 23rd |
| 17.5.2008 | 250 miles Laguna Seca | 67 | 997 GT3 Cup | Pumpelly / George, Jr. | TRG | 15th |
| 17.5.2008 | 250 miles Laguna Seca | 68 | 997 GT3 Cup | Valentine / Sellers | TRG | 37th |
| 17.5.2008 | 250 miles Laguna Seca | 86 | 997 GT3 Cup | Lux / Keen | Farnbacher Loles Racing | 18th |
| 17.5.2008 | 250 miles Laguna Seca | 87 | 997 GT3 Cup | Werner / Kaffer | Farnbacher Loles Racing | 25th |
| 17.5.2008 | 250 miles Laguna Seca | 88 | 997 GT3 Cup | Lacey / Johnson | Farnbacher Loles Racing | 20th |
| 17.5.2008 | 250 miles Laguna Seca | 96 | 996 GT3 Cup | Long / Potter | Air Power Racing | DNA |
| 18.5.2008 | GT Open Valencia | 1 | 997 GT3 RSR | Lietz / Roda | Autorlando | 1st/12th |
| 18.5.2008 | GT Open Valencia | 2 | 997 GT3 RSR | Zonca / Belicchi | Autorlando | DNF/11th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 5 | 997 GT3 RSR | Swartzbaugh / Stanton | VICI Racing | 23rd |
| 18.5.2008 | 2 h 45 min Salt Lake City | 6 | RS Spyder Evo | Maassen / Long | Penske Racing | 2nd |
| 18.5.2008 | FIA GT3 Monza | 6 | 997 GT3 Cup S | Williams / Ashburn | Trackspeed | DNF/7th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 7 | RS Spyder Evo | Bernhard / Dumas | Penske Racing | 1st |
| 18.5.2008 | FIA GT3 Monza | 7 | 997 GT3 Cup S | Nuttal / Shelley | Trackspeed | 20th/DNF |
| 18.5.2008 | GT Open Valencia | 9 | 997 GT3 RSR | de Castro / Chacón | Detector Drivex Porsche | 11th/8th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 16 | RS Spyder Evo | Dyson / Smith | Dyson Racing Team | 6th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 18 | 997 GT3 RSR | Carrapatoso / Pastorelli | VICI Racing | 22nd |
| 18.5.2008 | 2 h 45 min Salt Lake City | 20 | RS Spyder Evo | Leitzinger / Franchitti | Dyson Racing Team | 4th |
| 18.5.2008 | GT Open Valencia | 22 | 996 GT3-RSR | Fratti / Caffi | Autorlando | 7th/16th |
| 18.5.2008 | FIA GT3 Monza | 35 | 997 GT3 Cup S | Lamot / Penders | Prospeed Competition | 19th/10th |
| 18.5.2008 | FIA GT3 Monza | 36 | 997 GT3 Cup S | Loix / Lémeret | Prospeed Competition | DNF/DNF |
| 18.5.2008 | FIA GT3 Monza | 39 | 997 GT3 Cup S | Thomas / Jiřík | Muehlner Motorsport | 13th/12th |
| 18.5.2008 | FIA GT3 Monza | 40 | 997 GT3 Cup S | Bergmeister / Cloet | Muehlner Motorsport | 16th/28th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 44 | 997 GT3 RSR | Neiman / Law | Flying Lizard Motorsports 44 | 17th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 45 | 997 GT3 RSR | Henzler / Bergmeister | Flying Lizard Motorsports | 13th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 46 | 997 GT3 RSR | Pilet / van Overbeek | Flying Lizard Motorsports | 14th |
| 18.5.2008 | 2 h Monza | 59 | 997 GT3 RSR | Williams / Ashburn | Trackspeed Racing | 23rd |
| 18.5.2008 | 2 h Monza | 60 | 997 GT3 RSR | Forsten / Palttala | Prospeed Competition | 22nd |
| 18.5.2008 | 2 h Monza | 61 | 997 GT3 RSR | Westbrook / Collard | Prospeed Competition | 10th |
| 18.5.2008 | 2 h 45 min Salt Lake City | 87 | 997 GT3 RSR | Basseng / Werner | Farnbacher Loles Racing | DQ |
| 18.5.2008 | 2 h Monza | 99 | 997 GT3 RSR | "Victor" / Coggiola | Victor Racing | 25th |
| 24.5.2008 | ADAC GT Nürburgring | 15 | 997 GT3 Cup S | Bergmeister / Basseng | Mühlner Motorsport | 6th/4th |
| 24.5.2008 | ADAC GT Nürburgring | 16 | 997 GT3 Cup S | de Groot / Van De Laar | Mühlner Motorsport | 13th/14th |
| 24.5.2008 | ADAC GT Nürburgring | 27 | 997 GT3 Cup | Langen / Hannawald | Schnabl Engineering | DNS/19th |
| 24.5.2008 | ADAC GT Nürburgring | 28 | 997 GT3 Cup | Lauck / Richter | JvO Autosport | 12th/13th |
| 24.5.2008 | ADAC GT Nürburgring | 33 | 997 GT3 Cup S | Arnold / Stippler | Heico Motorsport | 1st/12th |
| 24.5.2008 | ADAC GT Nürburgring | 39 | 997 GT3 Cup | Dragoun / Ellinger | G-Private-Racing | 15th/17th |
| 24.5.2008 | ADAC GT Nürburgring | 40 | 997 GT3 Cup | Peham / Schmitter | G-Private-Racing | 14th/16th |
| 25.5.2008 | 24 h Nürburgring | 1 | 997 GT3 RSR | Bernhard / Lieb / Dumas / Tiemann | Manthey Racing | 1st |
| 25.5.2008 | 24 h Nürburgring | 3 | 911 GT3 RSR | Basseng / Stuck / Simon | Land-Motorsport PZ Aschaffenburg | DNF |
| 25.5.2008 | 24 h Nürburgring | 4 | 911 | Alzen / Gedlich / Abt / Menzel | Hankook / H&R Spezialfedern | DNF |
| 25.5.2008 | 24 h Nürburgring | 9 | 997 GT3 RS | Schratz / Siegler / Herbst / Vogler | steam-racing GmbH | DNF |
| 25.5.2008 | 24 h Nürburgring | 22 | 997 GT3 RSR | Stippler / Collard / Franchitti / Westbrook | HISAQ Competition | DNF |
| 25.5.2008 | 24 h Nürburgring | 23 | 997 GT3-MR | Kaffer / Hahne / Haarmann / Krumbach | Manthey Racing | 2nd |