FIA currently defines two categories of GT cars: GT1, or Grand Touring Cars, and GT2, or Series Grand Touring Cars. Each category has an annual driver champion, team champion, and manufacturer champion. Both categories are based on production road car designs, which must be produced in a minimum quantity of 25 examples to qualify. Both types may undergo significant modifications from the road car they are based on, but GT1 allows the use of exotic materials, better aerodynamics, larger brakes, wider tires and larger engine admission restrictors.

For the 2006 season, the FIA has created a new class called GT3. GT3 cars are even closer to their production counterparts and are very simply racetrack prepared with the essentials (rollcages for safety, stripped interiors, race spec fuel tanks, etc.). Prestigious motorsports makes such as Aston Martin, Chevrolet, Dodge, Lamborghini, Ascari and Maserati take part in FIA GT3 European Championship, a support series in some rounds of the main championship.

The FIA GT1 World Championship is a world championship sports car racing series developed by the SRO Group and regulated by the Fédération Internationale de l'Automobile (FIA). It features multiple grand tourer race cars based on production road cars and conforming with the GT1 regulations competing in one-hour races on multiple continents. Championships are awarded each season for drivers, teams, and manufacturers.

The FIA GT1 World Championship will debut in 2010 as a successor to the previous FIA GT Championship which featured the GT1 category as well as a GT2 category. GT2 cars will now compete in the FIA GT2 European Championship, a support series for the FIA GT1 World Championship.

The FIA GT1 World Championship plans to hold races in twelve countries, with each event consisting of two races over a weekend. The first race of each weekend will be a qualifying race, the results of which will determine the starting grid for the second race awarding full championship points. Each car will be required to change tires and drivers at least once during each race. To ensure close competition each model of car will be tested by the FIA to determine any mandatory adjustments for performance balancing.

Gigawave provides a turnkey operation to the SRO, organisers of the FIA GT Championship, including a technical crew who's job it is to install and operate the on-board camera system. Typically, ten FIA GT cars are equipped with on-board camera systems for each race. Of these, eitght cameras are available to the Director at any one time. In addition, the Director can select from up to four cameras on each car, including forward facing, rear facing, reverse POV, and other speciality cameras. The entire system, including the cameras is designed and built by Gigawave engineeers.

In addition to providing the on-board camera system, Gigawave also distributes the international feed from the OB Truck over the Internet.