| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire which suppresses reduction in durability and quietness.SOLUTION: A pneumatic tire is fixed to a rim and rotatable around a rotary shaft. The pneumatic tire comprises: a carcass; a bead part having a bead core, to which both end parts of the carcass are fixed, and a bead filler; and a bead reinforcement layer arranged between the carcass and the bead core. The bead reinforcement layer includes a tetra-axial fabric which comprises: a first thread material arranged at an angle of 20° or more and 80° or less with respect to a circumferential direction of the rotary shaft; a second thread material arranged at the angle of 20° or more and 80° or less with respect to the circumferential direction and crossing the first thread material; a third thread material arranged at the angle of 20° or more and 80° or less with respect to the circumferential direction and crossing the first thread material and the second thread material; and a forth thread material arranged at the angle of 20° or more and 80° or less with respect to the circumferential direction and crossing the first thread material, the second thread material, and the third thread material.SELECTED DRAWING: Figure 1 |
