The cars were based on standard bodyshells, but allowed plenty of modification to turn the car into a racecar and differentiate it from the Super Production class that would run alongside BTC Touring in the 2001 BTCC.
A year after the regulations began, the European Touring Car Championship launched its Super 2000 regulations. As the latter allowed manufacturers to have their cars seen internationally, most major companies opted for this, meaning that the BTCC suffered from small grids until it allowed Super 2000 cars to compete (with rules designed to equalise the two). In 2007 BTC-T cars were made ineligible to win the main championship, although as of 2010 a handful are still ran by small teams.
The 2010 season was meant to be the last year BTC Touring cars would be eligible to enter the championship, however Series Director Alan J. Gow has since announced BTC Touring will be allowed to compete in 2011, with their base-weight +50 kg on 2010. Only cars that competed in 2010 will be eligible to race in 2011.