GT World Challenge America

(Redirected from Pirelli World Challenge)

The GT World Challenge America is a North American auto racing series launched in 1990 by the Sports Car Club of America. It has been managed by the SRO Motorsports Group since 2018, and has been sanctioned by the United States Auto Club since 2017.

GT World Challenge America
CategoryGT3, GT4, TCR, Touring Car
Country United States
Inaugural season1984
Tire suppliersPirelli P Zero
Drivers' championGT: Toni Vilander
GTA: Martin Fuentes
GT Cup: Ryan Hardwick
GTS: James Sofronas
TCR: Ryan Eversley
TC: Vesko Kozarov
TCA: Tom O'Gorman
Makes' championGT: Ferrari
GTS: Panoz, LLC
TCR: Hyundai
TCA: Subaru
Teams' championGT: K-PAX Racing
GTS: Blackdog Racing
TCR: RealTime Racing
TC:Classic BMW
TCA: TechSport Racing
Current season

The series consists of four driver classifications and five classes of vehicles: GT3, GT4, (Sprint, SprintX, East and West), and Touring Car, consisting of TCR homologated cars, as well as separate TC and TCA classes featuring modified production vehicles, such as the BMW M235iR and the Mazda MX-5 Cup car.



The Sports Car Club of America created a "showroom stock" class for amateur club racing in 1972.[1] In 1984, following the success of the Longest Day of Nelson[2] and another 24-hour race at Mid-Ohio, the SCCA combined existing races into a manufacturer's championship. For 1985, the series became a 6-race professional championship with sponsorship from Playboy magazine. Escort radar detectors sponsored the series from 1986 until 1991.[1]

Fans invited to tour starting grid before 2011 season race

In 1990, the series was officially named World Challenge and was restructured to adopt rules similar to the European Group A for homologated production cars. The higher-cost "sports" classes were dropped after 1996, leaving the class format as it would stand until 2010. Speed TV network began sponsoring the series in 1999. With fields growing, the series began separate races for the GT and Touring classes in 2000, which would remain until 2010. In 2010, the series moved away from the partnership with SPEED, and signed a broadcast partnership with Versus (now NBCSN) for coverage. The series moved existing touring cars into a new GTS class, while changing the rules for the touring car class to reduce costs and keep cars closer to stock.[3]

With the SpeedVision television contract, the World Challenge eventually succeeded Trans Am as the SCCA's premier series.

In July 2008, the World Challenge series was purchased by WC Vision, a group of investors. The Sports Car Club of America remained the sanctioning partner of the series.

Starting with the 2011 season, the series signed a partnership with Pirelli and the leading tire manufacturer became the official tire supplier and title sponsor of the series.

In 2014, the Pirelli World Challenge established a GT-A classification similar to the FIA's bronze category.

In 2015, the series established GT Cup, featuring Porsche 991 Cup Cars that ran as part of the overall GT class races. Also, CBS Sports Network and Motor Trend On Demand became the new television partners.

In 2016, the series established SprintX classes of racing featuring two-driver sprint races for several driver classes. As part of the partnership with the SRO, the GTS class was expanded to include GT4 homologations.

For 2017, the Pirelli World Challenge transferred to USAC as its sanctioning body. GT Cup class is expanding to include Cup cars from Lamborghini and Ferrari, while SprintX classes expand in both driver classification specificity and competition-legal platforms.

On May 25, 2018, it was announced that the Stéphane Ratel Organisation had become majority shareholder of WC Vision LLC, and thus majority owner of Pirelli World Challenge.[4]

On September 29, 2018, it was announced the series acquired a new title sponsor as part of the overhaul of the Ratel series. The GT Sprint Cup in Europe and GT Series Asia will now be known as the Blancpain GT World Challenge Europe and Asia, respectively. The current World Challenge will become World Challenge America.


2011 GTS and Touring cars brake after first straight, Miller Motorsports Park

Each season consists of upwards of 11 event weekends and between 5 and 16 rounds or races. Some rounds or races use a standing start, as opposed to the all rolling starts seen in other sports car racing series. Blancpain GT World Challenge races consist of two-driver, 90-minute SprintX format races with two races per weekend. GT4 America is divided into two race formats, single driver, 50-minute Sprint races and two-driver 60-minute Sprintx races. The Touring Car America championship involve separate TCR 40-minute sprint races and 40-minute TC & TCA races.

Fanatec GT World Challenge America


The allowed body styles within this class are coupe, sedan and convertible. The cars permitted in GT are typically sold in the market as "sports" cars, "sport-touring" cars, or performance versions of "luxury" cars. Forced induction is permitted on cars that come equipped with forced induction stock, or on cars that the series has determined need help reaching the target horsepower range. Power output ranges from 500 hp to 600 hp. Weight varies depending on power output and tire size. All of the vehicles in GT are rear-wheel drive, or all-wheel drive. FIA GT3 class cars are now approved to compete in the class starting in 2013.

Pirelli GT4 America


The allowed body styles within this class are coupe, sedan and convertible. The cars permitted in GTS are typically marketed as "sports cars", "sport-touring cars" or performance versions of "luxury" cars but at a lower permissible preparation level than GT. Forced induction is permitted on cars that come equipped with forced induction stock. Power output ranges from 300 to 400 hp. Weight varies depending on power output and tire size. Front-wheel, rear-wheel, and all-wheel drive configurations are permitted. As of 2017, the class rules fully mimic the FIA GT4 formula. Models include the Ford Mustang, Chevrolet Camaro, Acura TSX, Audi TT, Porsche Cayman, Kia Optima, Nissan 370Z and Scion FR-S.



In 2016 an extended sprint format series was added as a standalone championship in addition to its existing Sprint format racing series. SprintX races are 60 minutes in length and feature mandatory driver and tire changes.[5]

GT4 East & GT4 West


Beginning in 2019, GT4 America began two regional series integrated into its Sprint X Championship. The regional series consist of five rounds each in the eastern and western sides of North America in a two-driver, pro-am format.

TC America


Touring Car (TC)


The allowed body styles in this class are coupes, hatchbacks, wagons, sedans. Power output ranges from approximately 300 hp. Weight varies depending on the power output of the individual drivetrain configurations. Front-wheel, rear-wheel, and all-wheel drive configurations are permitted. Forced induction may be allowed on cars that have forced induction systems available from the manufacturer which do not void the factory warranties.

Touring Car A (TCA)


Established in 2014, this class is an evolution of the current TC class with an emphasis on maintaining cost effectiveness while providing an easy avenue to entry into professional racing. Performance modifications will be limited to mainly chassis tuning. Front wheel and rear wheel drive configurations are permitted. Target power output is 220 crank hp from non-modified stock engines. Forced induction maybe allowed on cars that have forced induction systems available from the manufacturer as a stock engine option. Examples of eligible cars include the Honda Civic SI, Mazda MX-5, Ford Focus, Scion FR-S and Kia Forte.

Former Classes


TCR Touring Car (TCR)


The TCR class is based on the international TCR Touring Car class employed by a multitude of series worldwide. All TCR cars are based on 4 or 5 door production vehicles, and are powered by 2.0 litre turbocharged engines. While the bodyshell and suspension layout of the production vehicle is retained in a TCR car, and many models use a production gearbox, certain accommodations are made for the stresses of the racetrack including upgraded brakes and aerodynamics. Competition vehicles are subject to Balance of Performance (or BoP) adjustments to ensure close racing between different vehicles.

A "GTA" ("GT Amateur") driver class debuted in 2014.[6] It was a designation to recognize gentlemen drivers that competed in the GT class.

GT Cup


This spec class debuted in 2015 featuring Porsche 991 Cup Cars that ran as part of the overall GT Class races, with a separate victory circle presentation alongside that of the GT/GT-A class winners. In 2017 the class was expanded to include Lamborghini Huracan Super Trofeo and Ferrari 488 Challenge cars.

Touring Car B-Spec


Based on the Sports Car Club of America class of the same name, these were smaller cars with small, efficient, naturally aspirated motors (target HP is 125). Modifications were limited to manufacturer specified performance spring and shocks to keep overall cost down. Cars competing in TCB were prepared to the SCCA Club Racing B Spec rules. Cars that were eligible included the Fiat 500, Ford Fiesta, Mazda 2, Mini Cooper, Chevrolet Sonic, Honda Fit, Kia Rio, and Nissan Versa.[7] The class was discontinued after the 2017 season, a year after sanctioning of the series changed from SCCA to USAC.[8] These cars are still eligible to participate in the SCCA Runoffs.

Older World Challenge cars


Starting in 2009, older World Challenge cars became eligible (with minor modifications) for competition in SCCA racing. Under the SCCA's General Competition Rules (GCR),[9] the Super Touring category allows World Challenge GTs to compete in STO and Touring cars to compete in STU. In 2013 the STO class was merged into the T1 and GT2 classes.[10]


Races part of SRO America's series as of the 2019 season. Red dots are venues hosting all three categories of GT World Challenge, GT4, and TC, yellow dots are venues hosting GT World Challenge and GT4, blue dots are venues hosting GT4 and TC, green dots are GT4 only. Laguna Seca is an eight-hour GT endurance contest as part of the Intercontinental GT Challenge with a GT4 support race.



Speed TV network televised the World Challenge starting in 1996, with the series being called the SPEED World Challenge until 2010.

Near the end of the broadcast partnership with SPEED, the World Challenge had been broadcast on weekdays as opposed to the traditional weekends. For 2009, the races were combined into an hour-long block.[11]

On January 4, 2010, Versus (now NBC Sports Network) announced they would televise 90-minute broadcasts beginning in the 2010 season.[12] Each broadcast featured all the races from each round. The entire 2010 season was shown on the channel. The series later returned to weekend telecasts.[13]

Starting in 2015, CBS Sports Network announced that it acquired television rights to the series. Torque.TV, later Motor Trend On Demand partnered with CBS Sports Network for the race broadcasts to stream all races live on their website as well as on Archived 2016-10-09 at the Wayback Machine. CBS Sports Network will have at least 1 race with live television coverage with Detroit being the first round announced to have live coverage.

The series has also established a section on its official site where fans can watch archived race and in-car video, as well as an increasing amount of archived television broadcasts of events prior to the 2016 season.[14] The website currently has coverage from as far back as 2008.



On October 4, 2010, the series announced that Pirelli would replace longtime partner Toyo Tires as the exclusive tire supplier for the series.[15] For the first time in series history, teams competed on racing slicks (Pirelli P Zero) rather than the DOT competition tires in use for much of its history. In January 2014, Pirelli Tire North America and WC Vision extended the partnership for an additional five years. The extension of the partnership between the tire brand and the top production car-based racing series will run through the 2018 season.


Season GT Champion Car TC Champion Car
SCCA / Escort Endurance Championship
1986 Paul McIntosh (GT)
Bobby Archer & Tommy Archer (SS)
Porsche 944
Chevrolet Corvette
Garth Ullom & Tim Evans (SSA)
Scott Gaylord & Lance Stewart (SSB)
Dodge Shelby Charger
Honda CRX
1987 Steve Saleen & Rick Titus (GT)
Bobby Archer & Tommy Archer (SS)
Saleen Mustang
Chevrolet Corvette
Ray Kong & Mike Rutherford (SSA)
Alistair Oag & Peter Schwartzott (SSB)
Mitsubishi Starion
Volkswagen GTI
1988 Stuart Hayner Chevrolet Camaro Pepe Pombo (SSA)
Peter Cunningham (SSB)
Nissan 300ZX
Honda CRX
1989 Don Knowles & John Heinricy Chevrolet Camaro Bobby Archer & Tommy Archer (SSA)
Peter Cunningham & Scott Gaylord (SSB)
Eagle Talon
Honda CRX
SCCA World Challenge
1990 R. K. Smith Chevrolet Corvette Bobby Archer Eagle Talon
1991 Lou Gigliotti (SS)
Shawn Hendricks (World Challenge)
Chevrolet Camaro
Chevrolet Corvette
Mitch Wright Eagle Talon
1992 R. K. Smith (Class A)
Lou Gigliotti (Class B)
Chevrolet Corvette
Chevrolet Camaro
Dave Jolly Oldsmobile Achieva
1993 Elliott Forbes-Robinson (Class A)
Willy Lewis (Class B)
Nissan 300ZX
Eagle Talon
Ron Emmick Oldsmobile Achieva
1994 Price Cobb (World Challenge)
Neil Hannemann (Touring Car)
Porsche 911
Eagle Talon
Dave Jolly Oldsmobile Achieva
1995 David Murry (Sports)
Neil Hannemann (Touring)
Porsche 911
Eagle Talon
Peter Cunningham Honda Prelude
1996 Martin Snow (S1)
Almo Coppelli (S2)
Lou Gigliotti (T1)
Porsche 911
Callaway Corvette
Saleen Mustang
Michael Galati Honda Prelude
1997 Peter Cunningham Acura NSX Pierre Kleinubing Acura Integra
1998 Terry Borcheller Saleen Mustang Michael Galati Acura Integra
1999 Bobby Archer Dodge Viper Michael Galati Acura Integra
2000 Jeff McMillin BMW M3 Pierre Kleinubing Acura Integra
2001 Michael Galati Audi S4 Pierre Kleinubing Acura Integra
2002 Michael Galati Audi S4 Peter Cunningham Acura Integra
2003 Randy Pobst Audi RS6 Bill Auberlen BMW 325i
2004 Tommy Archer Dodge Viper Bill Auberlen BMW 325i
2005 Andy Pilgrim Cadillac CTS-V Sedan Peter Cunningham Acura TSX
2006 Lawson Aschenbach Porsche 911 GT3 Pierre Kleinubing Acura TSX
2007 Randy Pobst Porsche 911 GT3 Jeff Altenburg Mazda 6
2008 Randy Pobst Porsche 911 GT3 Peter Cunningham Acura TSX
2009 Brandon Davis Ford Mustang GT Pierre Kleinubing Acura TSX
2010 Randy Pobst (GT)
Peter Cunningham (GTS)
Volvo S60
Acura TSX
Robert Stout Scion tC
2011 Patrick Long (GT)
Paul Brown (GTS)
Porsche 911 GT3
Ford Mustang Boss
Lawson Aschenbach Honda Civic
2012[16] Johnny O'Connell (GT)
Peter Cunningham (GTS)
Cadillac CTS-V
Acura TSX
Michael Cooper (TC)
Jonathan Start (TCB)
Fiat 500
2013 Johnny O'Connell (GT) (2)
Lawson Aschenbach (GTS)
Cadillac CTS-V
Chevrolet Camaro
Ryan Winchester (TC)
Robbie Davis (TCB)
Honda Civic
MINI Cooper
2014 Johnny O'Connell (GT)
Michael Mills (GTA)
Lawson Aschenbach (GTS)
Cadillac CTS-V
Porsche GT3R
Chevrolet Camaro
Michael DiMeo (TC)
Jason Wolfe (TCA)
Brian Price (TCB)
Honda Civic
Kia Forte Koup
Honda Fit
2015 Johnny O'Connell (GT)
Frankie Montecalvo (GTA)
Colin Thompson (GTC)
Cadillac ATS-V
Mercedes SLS
Porsche 911
Michael Cooper (GTS)
Corey Fergus (TC)
Jason Wolfe (TCA)
Johan Schwartz (TCB)
Ford Mustang
Porsche Cayman
Honda Civic
Chevrolet Sonic
2016 Álvaro Parente (GT)
Martin Fuentes (GTA)
Alec Udell (GTC)
Brett Sandberg (GTS)
McLaren 650S GT3
Ferrari 458 Italia GT3
Porsche 911 GT3 Cup
Toby Grahovec (TC)
Elivan Goulart (TCA)
Tom O'Gorman (TCB)
BMW M235i Racing
Mazda MX-5 Cup
Honda Fit
2017 Patrick Long (GT)
James Sofronas (GTA)
Yuki Harata (GTC)
Lawson Aschenbach (GTS)
George Kurtz (GTSA)
Porsche 911 GT3 R
Porsche 911 GT3 R
Lamborghini Huracán LP 620-2 Super Trofeo
Chevrolet Camaro GT4.R
McLaren 570S GT4
Paul Holton (TC)
Matt Fassnacht (TCA)
P.J. Groenke (TCB)
Audi RS 3 LMS
Mazda MX-5 Cup
Chevrolet Sonic
2018 Toni Vilander (GT)
Martin Fuentes (GTA)
James Sofronas (GTS)
Drew Staveley (GTSA)
Ferrari 488 GT3
Ferrari 488 GT3
Audi R8 LMS GT4
Ginetta G55 GT4
Ryan Eversley (TCR/TCA)
Vesko Kozarov (TC)
Honda Civic Type R TCR (FK8)
Nissan 370Z
2019 Toni Vilander (Overall)
Martin Barkey & Kyle Marcelli (Pro-Am)
Martin Fuentes (Am)
Ferrari 488 GT3
Acura NSX GT3
Ferrari 488 GT3
Michael Hurczyn (TCR)
Johan Schwartz (TC)
Tyler Maxon (TCA)
Volkswagen Golf GTI TCR
BMW M235i Racing
Mazda Global MX-5 Cup
GT World Challenge America
2020 Silver class Pro-Am class Am class
Shelby Blackstock
Trent Hindman
Martin Fuentes Fred Poordad
Max Root
2021 Pro Pro-Am class Am class
Andrea Caldarelli
Jordan Pepper
Jan Heylen
Fred Poordad
Conrad Grunewald
Jean-Claude Saada
2022 Andrea Caldarelli Mario Farnbacher
Ashton Harrison
Charlie Scardina
Onofrio Triarsi
2023 Eric Filgueiras
Stevan McAleer
Colin Braun
George Kurtz
Anthony Bartone
Andy Pilgrim
  • Source:[17]
  • From 1986 to 1989 the series consisted of endurance races where co-drivers were used, often resulting in co-champions.
  • From 1986 to 1996 a variety of prior classification systems were used. Class winners are placed under the heading (GT or TC) of the most similar modern class.

Manufacturers' Champions

Season GT/GT3 Champion GTS/GT4 Champion TCR Champion TC Champion TCA Champion TCB Champion
1999   Porsche   Acura
2000   Porsche   Acura
2001   Audi   BMW
2002   Porsche   Acura
2003   Audi   BMW
2004   Audi   BMW
2005   Cadillac   Acura
2006   Porsche   Acura
2007   Cadillac   Mazda
2008   Porsche   Acura
2009   Porsche   Acura
2010   Volvo   Acura   Scion
2011   Porsche   Ford   Honda
2012   Cadillac   Acura   Honda   Honda
2013   Cadillac   Chevrolet   Honda
2014   Cadillac   Kia   Honda   Kia   Honda
2015   Porsche   Ford   Mazda   Honda
2016   McLaren   Ford   Mazda   Mazda
2017   Porsche   Chevrolet   BMW   Mazda
2018   Ferrari (Overall)
  Porsche GT Sprint - (Overall)
  Ferrari (GT Sprint. GTA)   Hyundai   Nissan   Honda
2019   Bentley (Overall)   Acura (Pro-Am Cup)   Ferrari (Am Cup)
. Silver class Pro-Am class Am class Pro class
2020   Acura   Ferrari   Porsche
2021   Porsche   Ferrari   Lamborghini
2022   Acura   Ferrari   Lamborghini

See also



  1. ^ a b "SCCA Pro Racing World Challenge - history". SCCA Pro Racing World Challenge. Sports Car Club of America. Archived from the original on 10 April 2009. Retrieved 24 July 2010.
  2. ^ "The Longest Day of Nelson". Nelson Ledges Road Course. Archived from the original on 2 June 2010. Retrieved 24 July 2010.
  3. ^ "World Challenge Car Facts". SCCA Pro Racing Speed World Challenge. Sports Car Club of America. Archived from the original on 24 July 2010. Retrieved 24 July 2010.
  4. ^ "SRO Motorsports Group becomes majority shareholder in WC Vision LLC". Pirelli World Challenge. Archived from the original on 2018-08-08. Retrieved 2018-08-07.
  5. ^ "Pirelli World Challenge to add 'extended sprint' races in 2016". 28 May 2015. Retrieved 24 December 2015.
  6. ^ "Archived copy" (PDF). Archived from the original (PDF) on 2013-12-11. Retrieved 2013-12-06.{{cite web}}: CS1 maint: archived copy as title (link)
  7. ^ "Untitled Document". Archived from the original on 2012-01-21. Retrieved 2012-01-09.
  8. ^ PWC adds new touring car division Archived 2018-01-09 at the Wayback Machine
  9. ^ "The Sports Car Club of America - Club Racing". Archived from the original on 2013-10-27. Retrieved 2013-10-06.
  10. ^ "The Sports Car Club of America - Club Racing". Archived from the original on 2015-02-08. Retrieved 2015-01-16.
  11. ^ "SCCA Pro Racing SPEED World Challenge". Archived from the original on 2009-03-16. Retrieved 2009-04-02.
  12. ^ "Untitled Document". Archived from the original on 2011-07-16. Retrieved 2010-01-06.
  13. ^ "SCCA Pro Racing World Challenge - Season Schedule". Archived from the original on 2010-01-25. Retrieved 2010-01-27.
  14. ^ Video Archived 2016-10-09 at the Wayback Machine
  15. ^ "Untitled Document". Archived from the original on 2010-10-05. Retrieved 2010-10-11.
  16. ^ Smith, Steven Cole (December 24, 2012). "Another Great Show". Autoweek. 62 (26): 68.
  17. ^ "Pro Racing Archives". Sports Car Club of America. Archived from the original on 19 August 2010. Retrieved 24 July 2010.