The 2015 Pirelli World Challenge season was the 26th running of the Sports Car Club of America's World Challenge series. It introduced a new all-Porsche "GT Cup" race group. Johnny O'Connell was the defending champion in the highest class, the GT class.
Schedule
The season comprises 12 rounds, with several rounds in support of the IndyCar Series and the United SportsCar Championship, as well as supporting the NASCAR Canadian Tire Series and the NASCAR Xfinity Series. Round Date Event Circuit Location Classes Supporting 1 March 6–8 Nissan Grand Prix of Texas Circuit of the Americas Austin, Texas GT/GTA/GT Cup (x2)GTS (x2)TC/TCA/TCB (x3) Headline 2 March 27–29 Cadillac Grand Prix of St. Petersburg Streets of St. Petersburg St. Petersburg, Florida GT/GTA/GT Cup (x2)GTS (x2) IndyCar Series 3 April 17–19 Roar By The Shore presented by Replay XD Streets of Long Beach Long Beach, California GT/GTA/GT Cup† IndyCar Series /United SportsCar Championship 4 April 24–26 MOMO Grand Prix at Barber Barber Motorsports Park Birmingham, Alabama GT/GTA/GT Cup† (x2)GTS (x2) IndyCar Series 5 May 15–17 Remo Ferri Group Canadian Grand Prix Canadian Tire Motorsport Park Bowmanville, Ontario GT/GTA/GT Cup (x2)GTS (x2)TC/TCA/TCB (x3) NASCAR Canadian Tire Series 6 May 29–31 Cadillac V-Series Challenge The Raceway on Belle Isle Detroit, Michigan GT/GTA (x2) IndyCar Series /United SportsCar Championship 7 June 26–28 DeVilbiss Grand Prix at Road America Road America Elkhart Lake, Wisconsin GT/GTA/GT Cup (x2)GTS (x2)TC/TCA/TCB (x3) Headline 8 July 31 – August 2 StopTech Grand Prix presented by MOMO Mid-Ohio Sports Car Course Lexington, Ohio GT/GTA/GT Cup (x2)GTS (x2) IndyCar Series 9 August 14–16 OPTIMA Grand Prix presented by MOMO TC/TCA/TCB (x3) NASCAR Xfinity Series 10 August 21–23 Ford Grand Prix at Miller by VP Fuels Miller Motorsports Park Tooele, Utah GT/GTA/GT Cup (x2)GTS (x2)TC/TCA/TCB (x3) Headline 11 August 28–30 Grand Prix of Sonoma presented by Kia Sonoma Raceway Sonoma, California GT/GTA/GT Cup (x2)GTS (x2) IndyCar Series 12 September 11–13 Mazda Raceway Grand Prix by Cadillac Mazda Raceway Laguna Seca Monterey, California GT/GTA/GT CupGTSTC/TCA/TCB (x3) Headline Source: †The round at Long Beach was capped to 40 cars, with only 10 GT-Cup cars guaranteed a place. Any GT-Cup entries that were not able to contest the Long Beach round were eligible for double points at Barber Motorsports Park.
News
The second race at Belle Isle on May 31 was cancelled on safety grounds due to inclement weather, which caused reduced track visibility. An additional race was held at Road America to replace the round at Detroit.
Entry list
GT/GTA
Constructor Team Car Driver Rounds Acura RealTime R&L TLX-GT 42 Peter Cunningham All 43 Ryan Eversley All Aston Martin De La Torre Racing V12 Vantage GT3 4 Jorge De La Torre 1, 4, 7–8, 10, 12 TRG-AMR 7 Christina Nielsen (R) 1–6, 8, 10–12 09 Mark McKenzie 1 LG Motorsports 28 Lou Gigliotti 1, 3, 8 Audi CRP Racing R8 LMS ultra 2 Mike Skeen All Global Motorsports Group 14 James Sofronas 1–4, 7–8, 10, 12 21 Madison Snow 1 David Welch 3, 6, 8 44 Brent Holden 2–3, 8, 10 76 Alex Welch 1, 7, 12 Stephen Cameron Racing 19 Drew Regitz All M1 Racing 23 Guy Cosmo 1 Walt Bowlin 2, 4, 7 JCR Motorsports 99 Jeff Courtney 1–5, 7–8 Bentley Bentley Team Dyson Racing Continental GT3 16 Chris Dyson All 20 Butch Leitzinger 1–8 Guy Smith 10–12 BMW Turner Motorsport Z4 GT3 32 Bret Curtis 1–6, 8, 10–12 95 Bill Ziegler 1–8, 10–11 Dane Cameron 12 Cadillac Cadillac Racing ATS-V.R GT3 3 Johnny O'Connell All 8 Andy Pilgrim All Dodge Black Swan Racing Viper GT3-R 54 Tim Pappas 3–8, 12 Lone Star Racing 80 Dan Knox 1–8 Ferrari Scuderia Corsa 458 Italia GT3 07 Martin Fuentes All 64 Duncan Ende All 65 Mike Hedlund 1–3, 5, 8, 11–12 NGT Motorsport 29 Eduardo Cisneros (R) 7–8, 10–11 Alessandro Balzan 12 30 Henrique Cisneros 1–8, 10–11 Alessandro Pier Guidi 12 R. Ferri Motorsports 61 Olivier Beretta All Risi Competizione 62 Ricardo Pérez (R) 1 Marc Muzzo 5 Lamborghini Blancpain Racing Gallardo R-EX 0 Marcelo Hahn 2 Gallardo GT3 FL2 25 Nick Catsburg 1–2, 4, 6, 10 Tomáš Enge 7 Gallardo R-EX Austin Cindric 8 Nick Catsburg 12 Gallardo GT3 FL2 37 Maximilian Vöelker 1–2 Gallardo R-EX 55 Henry Hassid 10 McLaren K-PAX Racing 650S GT3 6 Robert Thorne All 9 Kévin Estre All Mercedes-Benz DragonSpeed SLS AMG GT3 08 Eric Lux All 10 Henrik Hedman 1–5, 8, 11–12 66 Frankie Montecalvo All Black Swan Racing 54 Tim Pappas 1–2 Nissan AE Replay XD Nissan GT Academy GT-R GT3 05 Bryan Heitkotter 1–8 Bryan Heitkotter 10–12 33 J. D. Davison All Porsche EFFORT Racing 911 GT3 R 31 Ryan Dalziel 1–5, 7–8, 10, 12 Renger van der Zande 6, 11 41 Michael Lewis (R) 1–3 Michael Lewis (R) 4–8, 10–12 Autometrics Motorsports 90 Joseph Toussaint (R) 1, 4, 8 Colour Class GT GTA
GT Cup
Every driver participates in a Porsche 911 GT3 Cup. Team Driver Rounds TruSpeed Autosport 02 Sloan Urry All 18 Phil Fogg Jr. 1–5, 10–12 Brett Sandberg 7–8 Porsche of Bucks County 11 Colin Thompson All ANSA Motorsports 13 Lorenzo Trefethen (R) All Global Motorsports Group 17 Alec Udell 1–2, 4, 7–8, 10–12 NGT Motorsport 29 Eduardo Cisneros (R) 1–5 Wright Motorsports 60 Santiago Creel (R) 1 Phoenix American Motorsports 77 Preston Calvert (R) All DragonSpeed 81 Victor Gomez (R) All Landry Racing 97 Mitch Landry All
GTS
Constructor Team Car Driver Rounds Aston Martin TRG-AMR Vantage GT4 06 Jeff Huber 11–12 07 Kris Wilson 1–2, 4, 8, 11–12 Max Riddle 5 09 Derek DeBoer 1–2, 4, 11 13 Peter Ludwig 11 75 Jason Alexandridis 11 LG Motorsports 28 Lou Gigliotti 1–2, 4–5, 7–8, 10, 12 29 Bryan Leonard 4, 10 Stephen Cameron Racing 34 Nick Esayian 5, 7–8, 10–12 Klenin Performance Racing 62 Mark Klenin All Audi Compass360 Racing TT-RS 78 Paul Holton 11–12 Chevrolet Blackdog Speed Shop Camaro Z28 1 Lawson Aschenbach 4 10 Michael Cooper All 11 Tony Gaples 1–2, 5, 7–8, 10–12 BestIT Racing Camaro 20 Andy Lee All 40 Geoff Reeves 1 Camaro Z28 2, 4, 11–12 Ford Phoenix American Motorsports Mustang Boss 302 32 Andrew Aquilante All 35 Preston Calvert (R) All 37 Kurt Rezzetano All Rehagen Racing 14 Nathan Stacy 8, 10–12 33 Dan Martinson (R) 1–2, 4–5, 7–8 50 Dean Martin All Stephen Cameron Racing 34 Nick Esayian 1–2, 4 3R Racing 51 Nathan Stacy 4, 7 Ray Mason 8 Roush Road Racing 60 Jack Roush Jr. 1–2, 4–5, 7–8, 10, 12 68 Joey Atterbury 7 Brandon Gdovic 8 DWW Motorsports 87 Spencer Pumpelly 2, 4 Hyundai GAINSCO/Bob Stallings Racing Genesis Coupe 99 Jeff Harrison 11 Jon Fogarty 12 Kia Kia Racing/Kinetic Motorsports Optima 36 Ben Clucas All 38 Mark Wilkins All Lotus VSA Motorsports Evora GT4 44 Kevin Marshall 11–12 Maserati Maserati GranTurismo MC 21 Vafa Kordestani 12 24 Patrick Byrne 12 26 Freddie Hunt 12 27 Derek Hill 12 46 Nick Mancuso 7 47 Gianmarco Raimondo 7 66 Jeff Courtney 12 Nissan Skullcandy Team Nissan 370Z 23 Vesko Kozarov 1, 10, 12 Nick Hammann 11 Porsche Racing for Children's 911 Carrera 4 Clint Guthrie 4 (Race 1) Brandon Davis 4 (Race 2) Bilt Racing Service Cayman S 16 John Allen (R) 4, 7, 10–11 GTSport Racing 72 Buz McCall All 73 Jack Baldwin All
TC/TCA/TCB
Constructor Team Car Driver Rounds BMW Classic BMW Motorsports Z4 24 Toby Grahovec 7, 9 Chevrolet Hack Racing Sonic 2 Van Svenson (R) All Tech Sport Racing 25 Johan Schwartz All Ford Steadfast Motorsports Fiesta 27 Marc Sherrin (R) All Phoenix American Motorsports Mustang V6 32 Andrew Aquilante 1 Ian Lacy Racing 43 Ian Lacy 1 Steve Burns (R) 7, 10, 12 GSpeed Fiesta 63 Jeremy Rohan (R) 1 Steadfast Motorsports Matt Travis 12 Honda Mincey Racing Fit 4 Timothy Mincey Sr. (R) 1 Civic Si Timothy Mincey Sr. (R) 5 NDP Motorsports 5 Neal de Paz (R) 1 (Race 1) Felipe Merjech 1 (Race 2), 5 (Races 1 and 3) Juan Carlos Casadiego 1 (Race 3), 5 (Race 2) Drive4Diabetes/Garrett Racing 11 Chase Pelletier 7, 9 (Race 3), 10, 12 Jon Miller 9 (Races 1 and 2) Fit 12 Steve Kohli 7 Tech Sport Racing 23 Yiannis Tsiounis 9 Team Ost Racing Civic Si 39 Patrick Seguin 9–10, 12 Branden Peterson Racing 49 1, 5, 7 Racing.ca Fit 58 Glenn Nixon 7, 9–10, 12 Shea Racing 66 Jay Salinsky 1, 9, 12 Randy Smith 5, 7 Ted Hough 10 Civic Si 67 Shea Holbrook 1, 5 Steve Kohli 9–10 Andrew Rains (R) 12 CNC Racing S2000 68 Tommy Chen 12 Compass360 Racing Civic Si 71 Paul Holton 1 (Races 1 and 2), 5, 12 Karl Thomson 1 (Race 3) Ron Yarab 7, 9–10 72 Emilee Tominovich (R) All Honda Performance Development 70 Paul Whiting 10, 12 Fit 90 Kevin Boehm 9 (Race 1) Andrew Salzano 9 (Race 2) Jeff Barrow 9 (Race 3) Honda Motorsports Alabama Accord 93 Paul Street (R) 1, 7, 9, 12 TOMO Racing Fit 94 Tom O'Gorman (R) 9, 12 Hyundai GenRacer Genesis Coupe 78 Jeff Ricca 7, 9 Kia Kinetic Motorsports Forte Koup 34 Kris Wright (R) All 36 Jason Wolfe All 38 Samantha Tan (R) All Mazda Jeff Andretti Motorsports Demio 02 Cameron Parsons 12 Breathless Performance 9 Chris Holter 1 MX-5 98 Ernie Francis Jr. All Hale Motorsports 17 Randy Hale 1, 5, 7, 12 Tech Sport Racing RX-8 22 Kevin Anderson 1, 5, 7, 9 (Race 3), 10, 12 23 Robby Foley (R) 1 Elivan Goulart 5 Gino Carini 7, 12 Yiannis Tsiounis 9 (Race 1) Kevin Anderson 9 (Race 2) Jason Saini 10 Eastex Motorsports MX-5 33 Adam Poland All Corksport Demio 47 Joey Jordan 10, 12 BERG Racing MX-5 50 Dinah Weisberg (R) 1, 5, 7 John Weisberg 9–10, 12 Steve Bottom Racing 52 Steve Bottom 12 Black Armor Helmets Demio 55 James Wilson 1, 7, 12 95 Steve Taake 1, 12 Snader Racing MX-5 64 Austin Snader All Outlier Racing RX-8 99 Brian Lift (R) 12 Mini Breathless Performance Cooper 7 Jason Fichter All P. J. Groenke Racing 8 P. J. Groenke All Indian Summer Racing 30 Travis W. Washay (R) 5, 7 51 Mac Korince (R) 5 Shea Racing 48 Tom Noble 1, 5, 7, 10, 12 Nick Lougee 9 Racing.ca 57 Andrei Kisel All 58 Glenn Nixon 1, 5 59 Wei Lu (R) 1, 5, 9–10 Nic Duynstee 7, 12 Nissan Skullcandy Team Nissan Altima 3 Vesko Kozarov 1, 7, 9–10, 12 13 Jason Cherry 1, 5 Nissan GT Academy 370Z 35 Nick Hammann 9, 12 Lara Tallman 10 Pontiac Go 4 It Racing Solstice GXP 41 Michael Pettiford 1 Porsche Motorsports Promotions Cayman 00 Corey Fergus (R) All Autometrics Motorsports 03 Cory Friedman 1, 5 David Baum 9 04 Cody Ellsworth 1, 5 Cory Friedman 9 BERG Racing 40 John Weisberg 1, 5, 7 Dinah Weisberg (R) 10 Outlier Racing 88 Kevin Krauss 7, 12 Scion Brass Monkey Racing FR-S 86 Tony Rivera 1, 7, 9–10, 12 Volkswagen HPA Motorsports Jetta GLI 15 Jeff Altenburg All 16 Alex Welch All Rains Racing 26 Mikey Taylor (R) 5, 7 Golf GTI 44 Andrew Rains (R) 5, 7, 10 Emich Racing Jetta GLI 87 Fred Emich 7, 9, 12 Volvo 3R Racing C30 14 Nathan Stacy 1, 5 Colour Class TC TCA TCB
Race results