| 10.1.2015 | 24 h Dubai | 1 | 997 GT3 R | Ineichen / Ineichen / Amstutz / Engelhart | Stadler Motorsport | 87th |
| 10.1.2015 | 24 h Dubai | 11 | 997 GT3 R | Wagner / Bruder / Keller / Arnold / Cairoli | FACH AUTO TECH 1 | 69th |
| 10.1.2015 | 24 h Dubai | 12 | 997 GT3 R | Klohs / Ragginger / Richter / Müller | FACH AUTO TECH 2 | 71st |
| 10.1.2015 | 24 h Dubai | 53 | 991 GT3 Cup | Cappelletti / Frazza / Cordoni / Foglio / Rayneri | Dinamic Motorsport | 77th |
| 10.1.2015 | 24 h Dubai | 59 | 997 GT3 Cup | Hennes / Dontje / Baron / Holmgaard / Jensen | HRT Performance 2 | 64th |
| 10.1.2015 | 24 h Dubai | 61 | 991 GT3 Cup | de Craene / De Wilde / Loudvig / Van Glabeke | Speedlover 2 | 73rd |
| 10.1.2015 | 24 h Dubai | 62 | 991 GT3 Cup | Welch / Giddings / Hodge / Gathercole | STP Racing | DNS |
| 10.1.2015 | 24 h Dubai | 66 | 997 GT3 R | Kusín / Válek | Attempto Racing 1 | DNQ |
| 10.1.2015 | 24 h Dubai | 930 | 997 GT3 Cup | Matsushima / Takizawa / Shimojima / Mima | Team 930 Rush | 67th |
| 11.1.2015 | Daytona Test | 17 | 991 RSR I | Henzler / Sellers / Long | Falken Tire | 30th |
| 11.1.2015 | Daytona Test | 18 | 991 GT America | Michaelian / Basseng / Beretta / O'Young / De Phillippi | Muehlner Motorsports America | 52nd |
| 11.1.2015 | Daytona Test | 19 | 991 GT America | Michaelian / Basseng / Beretta / O'Young / De Phillippi | Muehlner Motorsports America | 50th |
| 11.1.2015 | Daytona Test | 22 | 991 GT America | MacNeil / Keen / Davis / van Gisbergen | Alex Job Racing | 41st |
| 11.1.2015 | Daytona Test | 23 | 991 GT America | James / Riberas / Farnbacher | Team Seattle/Alex Job Racing | 47th |
| 11.1.2015 | Daytona Test | 28 | 991 GT America | Bachler / Zöchling / Engelhart / Willsey | Konrad Motorsport | 37th |
| 11.1.2015 | Daytona Test | 44 | 991 GT America | Potter / Lally / Seefried | Magnus Racing LLC | 46th |
| 11.1.2015 | Daytona Test | 58 | 991 GT America | Snow / Eng / Heylen / Dempsey | Wright Motorsports | 36th |
| 11.1.2015 | Daytona Test | 73 | 991 GT America | | Park Place Motorsports | 48th |
| 11.1.2015 | Daytona Test | 81 | 991 GT America | Faulkner / Giermaziak / Skeen / Butcher / Avenatti | GB Autosport | 38th |
| 11.1.2015 | Daytona Test | 911 | 991 RSR I | Tandy / Pilet / Lieb | Porsche North America | 26th |
| 11.1.2015 | Daytona Test | 912 | 991 RSR I | Bergmeister / Bamber / Makowiecki | Porsche North America | 24th |
| 25.1.2015 | 24 h Daytona | 17 | 991 RSR I | Sellers / Henzler / Long | Team Falken Tire | 36th |
| 25.1.2015 | 24 h Daytona | 18 | 991 GT America | Basseng / Beretta / O'Young / De Phillippi / Mayr-Melnhof | Muehlner Motorsports America | 33rd |
| 25.1.2015 | 24 h Daytona | 19 | 991 GT America | De Phillippi / Michaelian / Lira / Flores / Mayr-Melnhof | Muehlner Motorsports America | 38th |
| 25.1.2015 | 24 h Daytona | 22 | 991 GT America | Keen / MacNeil / Davis / van Gisbergen | Alex Job Racing | 12th |
| 25.1.2015 | 24 h Daytona | 23 | 991 GT America | James / Riberas / Farnbacher | Team Seattle/Alex Job Racing | 45th |
| 25.1.2015 | 24 h Daytona | 28 | 991 GT America | Zöchling / Bachler / Engelhart / Willsey / Ineichen | Konrad Motorsport | 48th |
| 25.1.2015 | 24 h Daytona | 44 | 991 GT America | Lally / Potter / Seefried / Ragginger | Magnus Racing | 27th |
| 25.1.2015 | 24 h Daytona | 58 | 991 GT America | Heylen / Eng / Snow / Dempsey | Wright Motorsports | 13th |
| 25.1.2015 | 24 h Daytona | 73 | 991 GT America | Pumpelly / Lindsey / Norman / Canache / Estre | Park Place Motorsports | 35th |
| 25.1.2015 | 24 h Daytona | 81 | 991 GT America | Faulkner / Giermaziak / Skeen / Butcher / Avenatti | GB Autosport | 19th |
| 25.1.2015 | 24 h Daytona | 911 | 991 RSR I | Tandy / Pilet / Lieb / Christensen | Porsche North America | 25th |
| 25.1.2015 | 24 h Daytona | 912 | 991 RSR I | Makowiecki / Bergmeister / Bamber / Christensen | Porsche North America | 31st |
| 8.2.2015 | 12 h Bathurst | 4 | 997 GT3 Cup | Grove / Barker / Youlden | Grove Group | 17th |
| 8.2.2015 | 12 h Bathurst | 6 | 997 GT3 Cup | Gartner / Hector / Duffy / Zerefos | SAFE-T-STOP (Wall Racing) | 30th |
| 8.2.2015 | 12 h Bathurst | 12 | 997 GT3 R | Calvert-Jones / Long / Pither | ICE Break (Competition Motorsports) | 11th |
| 8.2.2015 | 12 h Bathurst | 14 | 997 GT3 Cup | Conroy / Bates / Denyer | Peter Conroy Motorsport | DNF |
| 8.2.2015 | 12 h Bathurst | 21 | 997 GT3 Cup | Fillmore / Stutterd / Lilley | Motorsport Services - Team Freem | 19th |
| 8.2.2015 | 12 h Bathurst | 38 | 997 GT3 Cup S | Tresidder / Bilski / Kingsley | Pelorus / Wall Racing | DNS |
| 8.2.2015 | 12 h Bathurst | 47 | 997 GT3 Cup S | Koundouris / Koundouris / Marshall / Power | Supabarn Supermarkets | 16th |
| 8.2.2015 | 12 h Bathurst | 50 | 997 GT3 Cup | Cresswell / Knight / GoodAcre / Bobik | Team LHI | 22nd |
| 8.2.2015 | 12 h Bathurst | 51 | 997 GT3 R | MacPherson / Campbell / Shiels | IMAK - KWIKMIT (AMAC Motorsport) | DNF |
| 8.2.2015 | 12 h Bathurst | 64 | 997 GT3 Cup | Macrow / Rullo / Modell | Motorsport Services | 18th |
| 8.2.2015 | 12 h Bathurst | 66 | 997 GT3 Cup | van der Drift / Lyons / Lyons | GT3 Endurance / Mobil 1 | 32nd |
| 8.2.2015 | 12 h Bathurst | 68 | 997 GT3 Cup | Chapel / Whyman / West | Motorsport Services | 20th |
| 8.2.2015 | 12 h Bathurst | 69 | 997 GT3 Cup | O'Donnell / Mauger / Lyons | GT3 Endurance / Mobil 1 | DNS |
| 8.2.2015 | 12 h Bathurst | | 997 GT3 Cup | | Adam Wallis | DNA |
| 1.3.2015 | Australian GT Adelaide | 12 | 997 GT3 Cup | Kingsley / Cook | Walz Group | DNF/DNS/DNS |
| 1.3.2015 | Australian GT Adelaide | 15 | 997 GT3 Cup | Keith Wong | Keith Wong | 28th/DNF/15th |
| 1.3.2015 | Australian GT Adelaide | 21 | 997 GT3 Cup | Danny Stutterd | DJS Racing Motorsport Services | 22nd/16th/12th |
| 1.3.2015 | Australian GT Adelaide | 33 | 997 GT3 Cup | Ellinghham / Luff | Fastway Couriers | 13th/14th/DNF |
| 1.3.2015 | Australian GT Adelaide | 47 | 997 GT3 R | Marshall / Koundouris | Supabarn Supermarkets | 2nd/DNS/8th |
| 1.3.2015 | Australian GT Adelaide | 51 | 997 GT3 R | Winslow / MacPherson | AMAC Motorsport | 10th/13th/DNF |
| 1.3.2015 | Australian GT Adelaide | 53 | 997 GT3 Cup | Richard Gartner | Safe-T-Stop | 20th/20th/11th |
| 1.3.2015 | Australian GT Adelaide | 64 | 997 GT3 Cup | McLennon / Macrow | Motorsport Services | 18th/22nd/19th |
| 1.3.2015 | Australian GT Adelaide | 66 | 997 GT3 Cup | John GoodAcre | Gap Solutions | 21st/9th/18th |
| 1.3.2015 | Australian GT Adelaide | 68 | 997 GT3 Cup | Michael O'Donnell | Thomson Geer Lawyers | 24th/DNF/22nd |
| 1.3.2015 | Australian GT Adelaide | 69 | 996 GT3-S | Theo Koundouris | Supabarn Supermarkets | 15th/10th/2nd |
| 12.3.2015 | SRO Test Paul Ricard | 28 | 997 GT3 R | | Attempto Racing | 45th |
| 12.3.2015 | SRO Test Paul Ricard | 128 | 997 GT3 R | | Delahaye Racing | 43rd |
| 18.3.2015 | BSS Misano Test | 188 | 997 GT3 R | Wagner / Ragginger | Fach Auto Tech | 6th |
| 21.3.2015 | 12 h Sebring | 17 | 991 RSR I | Henzler / Sellers / Long | Team Falken Tire | 12th |
| 21.3.2015 | 12 h Sebring | 18 | 991 GT America | | Muehlner Motorsports America | DNS |
| 21.3.2015 | 12 h Sebring | 19 | 991 GT America | Connor De Phillippi | Muehlner Motorsports America | DNA |
| 21.3.2015 | 12 h Sebring | 22 | 991 GT America | Keen / MacNeil / Davis | Alex Job Racing | 24th |
| 21.3.2015 | 12 h Sebring | 23 | 991 GT America | James / Riberas / Farnbacher | Team Seattle/Alex Job Racing | 15th |
| 21.3.2015 | 12 h Sebring | 44 | 991 GT America | Lally / Potter / Seefried | Magnus Racing | 35th |
| 21.3.2015 | 12 h Sebring | 58 | 991 GT America | Heylen / Snow / Valverde | Wright Motorsports | 23rd |
| 21.3.2015 | 12 h Sebring | 73 | 991 GT America | Pumpelly / Lindsey / Norman | Park Place Motorsports | 37th |
| 21.3.2015 | 12 h Sebring | 81 | 991 GT America | Faulkner / Skeen / Avenatti / Giermaziak | GB Autosport | 40th |
| 21.3.2015 | 12 h Sebring | 911 | 991 RSR I | Pilet / Tandy / Lietz / Bamber | Porsche North America | 14th |
| 21.3.2015 | 12 h Sebring | 912 | 991 RSR I | Makowiecki / Bergmeister / Bamber / Tandy | Porsche North America | 21st |
| 24.3.2015 | ELMS Test Paul Ricard | 86 | 991 RSR I | Wainwright / Carroll / Cullen / Keen | Gulf Racing UK | 14th |
| 28.3.2015 | WEC Test Paul Ricard | 17 | 919 Hybrid | Bernhard / Webber / Hartley | Porsche Team | 2nd |
| 28.3.2015 | WEC Test Paul Ricard | 18 | 919 Hybrid | Dumas / Jani / Lieb | Porsche Team | 1st |
| 28.3.2015 | WEC Test Paul Ricard | 77 | 991 RSR I | Long / Seefried | Dempsey Racing - Proton | 25th |
| 28.3.2015 | WEC Test Paul Ricard | 88 | 991 RSR I | Ried / Al Qubaisi / Bachler | Abu Dhabi-Proton Racing | 27th |
| 28.3.2015 | WEC Test Paul Ricard | 91 | 991 RSR I | Lietz / Christensen / Bergmeister / Müller | Porsche Team Manthey | 23rd |
| 28.3.2015 | WEC Test Paul Ricard | 92 | 991 RSR I | Pilet / Makowiecki / Henzler | Porsche Team Manthey | 24th |
| 28.3.2015 | Britcar GT Silverstone | | 996 GT3 Cup | Fothergill / Benett | | DNA |
| 5.4.2015 | 300 km Okayama | 33 | 997 GT3 R | Imperatori / Yamashita | Porsche Team KTR | 26th |
| 6.4.2015 | GT4 Euro Nogaro | 18 | Cayman SP (Typ 981) | Klasen / Krebs | PROsport Performance | 5th/4th |
| 6.4.2015 | British GT Oulton Park | 49 | 997 GT4 | Coomes / Hollamby | AMDTunning.com | 14th/DNF |
| 6.4.2015 | SRO GT Sprint Nogaro | 911 | 997 GT3 R | Wagner / Ragginger | Fach Auto Tech | 15th |
| 11.4.2015 | 4 h Silverstone | 86 | 991 RSR I | Keen / Wainwright / Carroll | Gulf Racing UK | 8th |
| 11.4.2015 | 4 h Silverstone | 88 | 991 RSR I | Ried / Bachler / Al Qubaisi | Proton Competition | 12th |
| 12.4.2015 | 6 h Silverstone | 17 | 919 Hybrid | Bernhard / Webber / Hartley | Porsche Team | DNF |
| 12.4.2015 | 6 h Silverstone | 18 | 919 Hybrid | Dumas / Jani / Lieb | Porsche Team | 2nd |
| 12.4.2015 | 3 h Monza | 28 | 997 GT3 R | Bordet / Viron | Delahaye Racing Team | DNF |
| 12.4.2015 | 3 h Monza | 56 | 997 GT3 R | Häring / Schmickler / Konstantinou | Attempto Racing | 40th |
| 12.4.2015 | 6 h Silverstone | 77 | 991 RSR I | Dempsey / Long / Seefried | Dempsey Racing - Proton | 23rd |
| 12.4.2015 | 6 h Silverstone | 88 | 991 RSR I | Ried / Al Qubaisi / Bachler | Abu Dhabi-Proton Racing | 21st |
| 12.4.2015 | 6 h Silverstone | 91 | 991 RSR I | Lietz / Christensen | Porsche Team Manthey | 10th |
| 12.4.2015 | 6 h Silverstone | 92 | 991 RSR I | Pilet / Makowiecki | Porsche Team Manthey | 15th |
| 18.4.2015 | 100 min Long Beach [P/GTLM] | 17 | 991 RSR I | Sellers / Henzler | Team Falken Tire | 12th |
| 18.4.2015 | 100 min Long Beach [P/GTLM] | 911 | 991 RSR I | Pilet / Makowiecki | Porsche North America | 10th |
| 18.4.2015 | 100 min Long Beach [P/GTLM] | 912 | 991 RSR I | Lietz / Bergmeister | Porsche North America | 16th |
| 19.4.2015 | FFSA GT Lédenon | 1 | 997 GT3 R | Pernaut / Narac / Dumez | IMSA Performance Matmut | 3rd |
| 19.4.2015 | FFSA GT Lédenon | 14 | 997 GT3 R | Mouez / Loger | Porsche Lorient | DNA |
| 19.4.2015 | FFSA GT Lédenon | 17 | 997 GT3 R | Misslin / Bottemanne / Lariche | Le Mans GT by Courage | DNF |