SR173+ Bearing Type Applicable to all types of vehicles in different kinds of road. The big and deep groove design is used in tyre shoulder, which is equipped with high cooling efficiency and strong driving force. The tyre is featured by high wear-resistance and low-heat, which provides a longer service life for users. Three-polyline vertical groove design provides powerful traction, anti-sideslip and wet-slide resistance. The special strengthening design in tyre bead makes its bearing performance become higher. Size: 12.00R20/11.00R20