| 摘要 |
<p>A pneumatic tire (1) comprises: a belt layer having a pair of intersecting belts, and a circumferential reinforcement layer provided with a steel wire disposed between the intersecting belts or further inside in the tire radial direction than the intersecting belts and wound around in helical fashion while sloping within a range of ±5 [deg] with respect to the tire circumferential direction; and a tread section disposed further outside in the tire radial direction than the belt layer and used for making contact with the road surface. The tread section is assembled onto a normal rim, filled with maximum air pressure for normal internal pressure, set to a camber angle of 0°. The shape of the contact surface when 100% of normal weight is applied is 0.9 = LZ/LC = 1.0, wherein LC is the ground contact length of the equatorial surface of the tire in the tire circumferential direction, and LZ is the ground contact length in the tire circumferential direction at the end part of the circumferential reinforcement layer in the tire circumferential direction. The width of the circumferential reinforcement layer in the tire width direction is 60%-85% of the maximum ground contact width of the contact surface of the tread section in the tire width direction.</p> |
