Heavy loading tire

A heavy loading tire comprising a tread having a center land and shoulder lands, wherein

• in the heavy loading tire in a state prior to use,
• the tread includes a first circumferential groove extending in a tire circumferential direction between the center land and each of the shoulder lands, and the center land includes, in a substantially center of the center land in the tire width direction, a second circumferential groove extending in the tire circumferential direction,
• the center land is segmented into center blocks by the second circumferential groove and first widthwise grooves arranged in the tire circumferential direction,
• the shoulder lands are each segmented into shoulder blocks by second widthwise grooves arranged in the tire circumferential direction,
• the first widthwise grooves and the second widthwise grooves have a depth that is 10% to 30% of a depth of the first circumferential groove,
• the first widthwise grooves each include, on a groove bottom, a first groove bottom sipe, and the second widthwise grooves each include, on a groove bottom, a second groove bottom sipe,
• the center blocks include a curved sipe and a short sipe, the curved sipe extending in the tire circumferential direction and having open ends opened to the respective first widthwise grooves, the curved sipe having two bent portions, the short sipe extending in the tire circumferential direction, the short sipe having an open end opened to the first widthwise grooves and a second end closed within the center block, and
• as the tread wears, the first widthwise grooves and the second widthwise grooves disappear, and patterns of the center land and the shoulder lands change from a block pattern to a rib pattern.