23 Apr 2026
With the upgrade of the EU UNECE R117 regulation and tire labeling legislation,S2W2R3B has become the latest certification standard for TBR (Truck and Bus Radial) tires in the European market. This standard not only raises the market entry threshold but also places higher demands on fleet performance in terms of safety, energy efficiency, and long-term operational stability. In essence, S2W2R3B is not a single metric, but a comprehensive evaluation of multiple tire perfo