TCR Regional Series is a motorsports competition based on TCR regulations, reflecting the unique environments and characteristics of each region. Held in major regions across the world, each event features vehicles from various manufacturers and skilled drivers, offering exciting races and serving as a crucial stage for advancement to the top World Tour.

As the official tire supplier for the TCR Europe and TCR Eastern Europe series, Kumho Tire provides all participating vehicles with the ECSTA racing tire. Kumho Tire's products, which provide stable grip and consistent performance across diverse circuit layouts and weather conditions, are recognized by local teams and drivers for their technological progress and quality competitiveness. Kumho Tire continues to expand its presence as a high-performance brand in regional motorsports.