A belt layer of a pneumatic tire includes a first main working belt, a second main working belt arranged at an outer side of the first main working belt in a tire-radial direction, the second main working belt having a cord angle which differs from a cord angle of the first main working belt in a direction with respect to a tire-circumferential direction, and a reinforcement belt. A cord angle of the reinforcement belt is not smaller than 6 degrees and not larger than 9 degrees. a width of the reinforcement belt is equal to or wider than 50% of a tire-section width and not wider than a width of a narrower one of the first and second main working belts, and is equal to or wider than 30% of a periphery length of the carcass and not wider than 50% thereof.