Flat radial tire with asymmetric tread pattern on asymmetric profile

摘要

PROBLEM TO BE SOLVED: To provide a radial tire improved in traveling performance during normal travel and turning performance on the general wet road surface by increasing cornering power while maintaining excellent critical traveling performance. SOLUTION: A tread outer half face 7 is bisected into an outer shoulder part 9 and an outer mediate part 10. A tread inner half face 8 is bisected into an inner shoulder part 11 and an inner mediate part 12, and the radius of curvature R1 of the inner shoulder part is made 60-90% of the radius of curvature R0 of the outer shoulder part 9. The outer mediate part 10 and the inner mediate part 12 are provided with a block row partitioned by lateral grooves tar connecting a longitudinal groove 6 to an adjacent groove. The outer shoulder part 9 is provided with a rib provided with a lateral groove with one end opened to a tread end and with the other end closed in the shoulder part so as to provide an asymmetric tread pattern in asymmetric profile with the void ratio of the tread outer half face 8 made smaller than that of the tread inner half face 8.