To provide a pneumatic tire for heavy-load having a chafer at a bead part in which increase of hardness after use and reduction of fracture strength and resistance to crack development are prevented.

A chafer rubber composition comprises 100 pts. wt. of a natural rubber and/or a diene synthetic rubber, 1-2.5 pts. wt. of sulfur and 0.2-3 pts. wt. of 1,3-bis(citraconimidomethyl)benzene, wherein the ratio of the compounded amount of a curing accelerator to that of the sulfur is 0.7 or more, or the compounded amount of 1,3-bis(citraconimidomethyl)benzene is 0.8-3 pts. wt. based on 100 pts. wt. of the rubber component. There is also provided a pneumatic tire for heavy-load having a chafer composed of the rubber composition at a bead part.