| 摘要 |
PURPOSE: A pneumatic tire for a vehicle is provided to improve the durability of a bead portion and minimize distortion due to the heat generated by a bead portion through radiating the heat generated by a bead portion effectively. CONSTITUTION: A pneumatic tire for a vehicle is composed of a tread(1), a bead portion(2), and a sidewall(3). A plurality of dimples(4) is formed in the rim flange contact surface portion(21) of the bead portion. Each dimple is connected by vent lines(5) and forms a mesh structure. Concave shape outer vent lines(6) extended to the central part of the sidewall are formed in the upper intersection of upper dimples(41) or vent lines. The outer vent lines are extended to the lower surface of a rim protect bar in the tire equipped with a rim protect bar. |
