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A group of cars at the Snetterton Circuit, featuring three Group GT3 manufacturers. Group GT3, known technically as Cup Grand Touring Cars [1] and commonly referred to as simply GT3, is a set of regulations maintained by the Fédération Internationale de l'Automobile (FIA) for grand tourer racing cars designed for use in various auto racing series throughout the world.
Once the results are obtained, various aspects of the car that can affect the car's performance such as engine power, vehicle weight, and aerodynamics are adjusted. [ 3 ] [ 4 ] By analyzing performance patterns of each car, organizers can change the balance of performance of a car at any point during the season. [ 5 ]
ALMS GT2 cars competing at Road America in 2007 Ferrari 488 GTE Evo Porsche 911 RSR-19. Grand Touring Endurance, shortened to GTE, was a set of regulations maintained by the Automobile Club de l'Ouest (ACO) and IMSA for grand tourer racing cars used in the 24 Hours of Le Mans, 24 hours of Daytona GTLM, and its associated series.
Homologation is most popular with the production based Fédération Internationale de l'Automobile (FIA) Group GT3 class, where no fewer than 20 different race sanctioning bodies around the world use the same set of rules for this class. This allows the same car to be raced under different sanctioning bodies with no modification between races.
The championship featured classes for both professionals and amateurs. GT3 rules included extensive performance balancing and handicap weights to make cars artificially more equal. In 2016, grids depleted and Oreca cancelled the championship. For the 2017 season, the SRO Group became again the promoter and the GT4 regulations were adopted.
The FIA introduced a new Group 3 Grand Touring Car category in 1966 as part of a major revision of the Appendix J regulations. [7]: 613 The production minimum required for Group 3 homologation was raised to 500 units and models such as the Ferrari 250 GTO and Porsche 904 were reclassified to the new Group 4 Sports Car category with its lower 50 unit minimum.
The category later mirrored FIA Group GT3 and used near-identical regulations to the FIA GT3 European Championship from 2006 onwards. [citation needed] GT3 rules include extensive balance of performance and handicap weights to make cars artificially more equal. Cost-saving measures saw the series' previous premier class, GT2, phased out at the ...
The regulations of the new category have been created to match the performance of current GT3 cars, with many technologies being carried over from the GT3 regulations to keep costs low; [6] for instance, minimum weight is planned to be 1,490–1,530 kg (3,280–3,370 lb) to limit the use of expensive materials. [3]