| 摘要 |
<p>The invention provides a pneumatic tire which can uniformly improve the noise performance, snow rode performance, and ice rode performance. The pneumatic tire is provided with a center pattern block (5) and a middle pattern block (6). The two pattern blocks are provided with a plurality of sipes (14). A central transverse groove (4A) is inclined at an angle in the range of 5-20 degrees, and the average groove width is 7-15% of the maximum length (L3) of the center pattern block. A middle transverse groove (4B) is inclined at an angle in the range of 5-25 degrees, and the average groove width is 7-11% of the maximum length (L4) of the middle pattern block (6). In the grounding surface under the standard load state, the tire circumferential distance (La) of a first intersection point (K1) and a second intersection point (K2) is 0.75-1.00 times of the difference (L5-L6) of the length of the grounding surface at the tire equator position (Ce) and the length of the grounding surface at the middle position (6c) of the middle pattern block, and the first intersection point is obtained by the intersection of the central transverse groove and a central main groove (3A), and the second intersection point is obtained by the intersection of the middle transverse groove and the central main groove.</p> |
