| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of making compatible both dry steering stability and snow steering stability. <P>SOLUTION: The pneumatic tire includes: a plurality of circumferential main grooves 21-23 extending in the tire circumferential direction; and a plurality of lands 31-34 defined by these circumferential main grooves. The plurality of lands 31-34 have a plurality of sipes 312-342, respectively. Furthermore, 90[%] or more of the sipes 312, 322 disposed in an inside area are composed of three-dimensional sipes, and 90[%] or more of the sipes 332, 342 disposed in an outside area are composed of two-dimensional sipes. Rubber hardness H1_in at -10[°C] and rubber hardness H2_in at 20[°C] of cap rubber in the inside area and the rubber hardness H1_out at -10[°C] and rubber hardness H2_out at 20[°C] of cap rubber in the outside area have relationships of H1_in>H1_out and H2_in>H2_out. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
