PNEUMATIC TIRE FOR HEAVY DUTY

A pneumatic tire for heavy duty having an aspect ratio of 65% or less includes a carcass (6) and a belt layer (7); the tread portion (2) includes circumferential grooves (11, 12), wherein the circumferential grooves include a pair of wide shoulder circumferential grooves (12) and a narrow crown circumferential groove (11); the belt layer (7) includes metal belt cords inclined with respect to a tire circumferential direction; the belt layer (7) has outer ends each positioned outside a respective one of the shoulder circumferential grooves (12) in a tire axial direction; the belt half width (Wb) is 55% or more and 85% or less of a carcass half width (W1).