Pneumatic tire

A pneumatic tire comprising a carcass layer, a belt layer disposed on an outer side of the carcass layer in a tire radial direction, and a tread rubber disposed on the outer side of the belt layer in the tire radial direction, wherein

• the belt layer is formed by laminating a large angle belt having a belt cord angle of not less than 45° and not more than 70° in absolute values, a pair of cross belts having belt cord angles of not less than 10° and not more than 45° in absolute values and having belt cord angles of mutually opposite signs, and a circumferential reinforcing layer having a belt cord angle within a range of ±5° with respect to a tire circumferential direction,
• a tread width TW and a total tire width SW have a relationship such that 0.79≦TW/SW≦0.89,
• a width Ws of the circumferential reinforcing layer and a cross-sectional width Wca of the carcass layer have a relationship such that 0.60≦Ws/Wca≦0.70,
• a width Wb2 of a wider cross belt of the pair of cross belts, and the cross-sectional width Wca of the carcass layer have a relationship such that 0.79≦Wb2/Wca≦0.85, and
• a diameter Ya of the highest position of the carcass layer and a diameter Yc of the widest position of the carcass layer have a relationship such that 0.80≦Yc/Ya≦0.90.