| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of striking a balance between a dry driving safety and a snow driving safety. <P>SOLUTION: The pneumatic tire 1 includes in a tread part: a plurality of circumferential main grooves 21-23 extending in a tire circumferential direction; and a plurality of land parts 31-34 partitioned and formed by these circumferential main grooves. Additionally, the plurality of land parts 31-34 have a plurality of sipes 312-342, respectively. Moreover, ≥90% of the sipes 312 and 322 disposed in an inner side region are constituted by two-dimensional sipes and ≥90% of the sipes 332 and 342 disposed in an outer side region are constituted by three-dimensional sipes. Furthermore, the tread part has a cap rubber and an under rubber. A rubber hardness H1_in at -10°C. and a rubber hardness H2_in at 20°C of the cap rubber 151_in in the inner side region, and a rubber hardness H1_out at -10°C and a rubber hardness H2_out at 20°C of the cap rubber 151_out in the outer side region have relationships such that H1_in<H1_out and H2_in<H2_out. <P>COPYRIGHT: (C)2013,JPO&INPIT |
