A heavy duty tire, comprising a tread, the tread comprising: one or more rubber components including a styrene-butadiene rubber; carbon black; and silica, the tread having a plurality of sipes, characterized in that the tread satisfying the following relationship: 100 ≥ A × B ≥ 40 wherein A represents a styrene-butadiene rubber content (% by mass) based on 100% by mass of the rubber components, and B represents a ratio (mm -1) of lateral direction components of the sipes to a surface area of the tread, wherein the surface area (mm 2) of the tread is calculated using the following equation: Surface area of tread = Outer diameter Dt of tire × Cross sectional width Wt of tire × π, wherein the Outer diameter (Dt) of tire represents the outer diameter of the tire under no load in the normal state mounted on a normal rim with an internal pressure of 250 kPa; and the Cross sectional width (Wt) of tire represents the width of the tire under no load in the normal state mounted on a normal rim with an internal pressure of 250 kPa, as determined by excluding the patterns, letters, and the like on the sides of the tire from the linear distance between the sidewalls (the total width of the tire) including all the patterns, letters, and the like on the sides of the tire. the tread comprising: one or more rubber components including a styrene-butadiene rubber; carbon black; and silica, the tread having a plurality of sipes, characterized in that the tread satisfying the following relationship: 100 ≥ A × B ≥ 40 wherein A represents a styrene-butadiene rubber content (% by mass) based on 100% by mass of the rubber components, and B represents a ratio (mm -1) of lateral direction components of the sipes to a surface area of the tread, wherein the surface area (mm 2) of the tread is calculated using the following equation: Surface area of tread = Outer diameter Dt of tire × Cross sectional width Wt of tire × π, wherein the Outer diameter (Dt) of tire represents the outer diameter of the tire under no load in the normal state mounted on a normal rim with an internal pressure of 250 kPa; and the Cross sectional width (Wt) of tire represents the width of the tire under no load in the normal state mounted on a normal rim with an internal pressure of 250 kPa, as determined by excluding the patterns, letters, and the like on the sides of the tire from the linear distance between the sidewalls (the total width of the tire) including all the patterns, letters, and the like on the sides of the tire. wherein A represents a styrene-butadiene rubber content (% by mass) based on 100% by mass of the rubber components, and B represents a ratio (mm -1) of lateral direction components of the sipes to a surface area of the tread, wherein the surface area (mm 2) of the tread is calculated using the following equation: Surface area of tread = Outer diameter Dt of tire × Cross sectional width Wt of tire × π, wherein the Outer diameter (Dt) of tire represents the outer diameter of the tire under no load in the normal state mounted on a normal rim with an internal pressure of 250 kPa; and the Cross sectional width (Wt) of tire represents the width of the tire under no load in the normal state mounted on a normal rim with an internal pressure of 250 kPa, as determined by excluding the patterns, letters, and the like on the sides of the tire from the linear distance between the sidewalls (the total width of the tire) including all the patterns, letters, and the like on the sides of the tire.