| 摘要 |
In a pneumatic tire, a uneven wear-preventing narrow groove 4 is formed on a tread surface 2a extending from a tread edge E in a tire circumferential direction inside a tire axial direction at a small distance L. At least a groove bottom surface 4b of the narrow groove 4 and an outer groove wall surface 4o outside of the tire axial direction are formed of crack-resistant layers 9 made of crack-resistant rubber material Cg having excellent crack-resistance. A thickness t1 of the crack-resistant layer 9 perpendicular to the groove bottom surface 4b at right angles in a tire radial direction is set to 1 to 5 mm, and a thickness t2 perpendicular to the outer groove wall surface 4o at right angles is set to 1 to 6 mm.
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