 In June 2017, Officials from IMSA and World Sporting Consulting (WSC) as the rights holder for TCR today confirmed plans for the TCR class to begin competing in the IMSA Continental Tire SportsCar Challenge beginning in 2018.The class will run in addition to the two existing Continental Tire SportsCar Challenge classes, Grand Sport (GS) and Street Tuner (ST) in the 2018 season.Unlike most TCR-based series, the SportsCar Challenge series races are longer, as they are two-driver races lasting either two or four hours.