| 摘要 |
PURPOSE:To provide a pneumatic radial tire for heavy load which can restrain wavy abrasion, polygonal abrasion, etc., evolving from shoulder-reduced abrasion by restraining partial abrasion at a shoulder part at initial abrasion. CONSTITUTION:At an edge on the center side of a shoulder rib 6, a narrow groove 3 of the groove width of 0.5 to 4mm continuing in the tire circumferential direction is provided, and a narrow rib 7 of the same height as a main rib 6a of the shoulder rib 6 is formed by this. |
