A pneumatic tire comprising: bead cores provided on a pair of right and left bead portions, respectively, a carcass ply extending from a crown portion to the both bead portions through both side wall portions and moored to the bead cores, an inner liner disposed at an inner side than the carcass ply in a direction of a tire diameter, and a tread disposed at an outer side than the carcass ply in a direction of a tire diameter, comprising two or more kinds of rubber components and a filler and having a volume of the low density region of 35% or more at elongation by an applied stress of 1.5 MPa, a volume of the void portion of 7.5% or less at elongation by an applied stress of 3.0 MPa and a filler distribution D represented by the following formula (I) of 2.0 or less. D = A 1 / B 1 / A 0 / B 0 In the formula (I), A 1 represents a volume fraction of a rubber component A in a filler gel, B 1 represents a volume fraction of a rubber component B in a filler gel, A 0 represents a volume fraction of a compounded rubber component A, B 0 represents a volume fraction of a compounded rubber component B, wherein the low density region is a region having a density of 0.1 to 0.8 time the density of a crosslinked rubber composition before the elongation, and wherein the void portion is a region having a density of 0 to 0.1 times the density of a crosslinked rubber composition before the elongation, wherein a method of evaluating volumes of the low density region and the void portion is an X-ray computerized tomography, a decay time of a phosphor for converting the X-ray into a visible light is 100 ms or less, and a luminance of the X-ray is 10 10 photons/s/mrad 2 /mm 2 /0.1% bw or more. bead cores provided on a pair of right and left bead portions, respectively, a carcass ply extending from a crown portion to the both bead portions through both side wall portions and moored to the bead cores, an inner liner disposed at an inner side than the carcass ply in a direction of a tire diameter, and a tread disposed at an outer side than the carcass ply in a direction of a tire diameter, comprising two or more kinds of rubber components and a filler and having a volume of the low density region of 35% or more at elongation by an applied stress of 1.5 MPa, a volume of the void portion of 7.5% or less at elongation by an applied stress of 3.0 MPa and a filler distribution D represented by the following formula (I) of 2.0 or less. D = A 1 / B 1 / A 0 / B 0 In the formula (I), A 1 represents a volume fraction of a rubber component A in a filler gel, B 1 represents a volume fraction of a rubber component B in a filler gel, A 0 represents a volume fraction of a compounded rubber component A, B 0 represents a volume fraction of a compounded rubber component B, A 1 represents a volume fraction of a rubber component A in a filler gel, B 1 represents a volume fraction of a rubber component B in a filler gel, A 0 represents a volume fraction of a compounded rubber component A, B 0 represents a volume fraction of a compounded rubber component B, wherein the low density region is a region having a density of 0.1 to 0.8 time the density of a crosslinked rubber composition before the elongation, and wherein the void portion is a region having a density of 0 to 0.1 times the density of a crosslinked rubber composition before the elongation, wherein a method of evaluating volumes of the low density region and the void portion is an X-ray computerized tomography, a decay time of a phosphor for converting the X-ray into a visible light is 100 ms or less, and a luminance of the X-ray is 10 10 photons/s/mrad 2 /mm 2 /0.1% bw or more. <EOS>