Carlube sponsored the series between 2002 and 2004. The series was now renamed Dunlop TVR Challenge. At the end of 2003, a version of the T350 known as the Sagaris was introduced with an intention to run alongside the racing Tuscan and to eventually replace them. But when Peter Wheeler sold the company to Nikolay Smolensky, the new owner abruptly ended factory support before the 2005 season had begun. TVR's Motorsport Director acquired the rights and kept the series going but on a much smaller basis; by then, TVR had sold off all its racer cars. With waning entries, many of these cars had either been converted to road use or ended up in track days, the series would continue under a new format as it merged with the Toolsnstuff.co.uk/SIP TVRCC Challenge Cup, a smaller series that consists of a wide range of TVR models, meaning that the grid now featured a more diverse range of TVR models in one race and the series split into three categories.