| 摘要 |
<p>Shoulder drop wear and triangular wear are prevented. A heavy duty tire which comprises a shoulder block comprises a first arc portion having a radius of curvature (R1), in which a tread contour comprises an arc center at a tire equatorial surface at a 5% internal pressure state; and a second arc portion having a radius of curvature of (R2) which intersects with the first arc portion at an intersection (Q). An arc center of the second arc portion is located on a radial line passing through the intersection (Q). A ratio of the radii of curvature (R2/R1) is between 0.2 and 0.5. A ratio (He/H) between a tire radial direction distance (He) from an equatorial point to a tread edge and a radial direction distance (H) from the equatorial point to a virtual tread edge on a line extending from the first arc portion is equal to or higher than 0.5 or lower than 1.0.</p> |
