A pneumatic tire (10, 40) comprising: a decorative concave portion (18, 48) that is formed at an outer surface of a tire side portion; a first direction ridge pattern (20, 50) having a main ridge region (24, 54), which has a plurality of main ridges (22A, 22B, 22C, 22D, 52A, 52B) that project out from a bottom surface (18A, 48A) of the decorative concave portion (18, 48) and that are disposed in parallel such that an extending direction thereof is a first direction, and a sub-ridge region (28, 58), which has a plurality of sub-ridges (26A, 26B, 26C, 26D 56A, 56B, 56C, 56D) that project out from the bottom surface (18A, 48A) of the decorative concave portion (18, 48) and that are disposed in parallel such that an extending direction thereof is the first direction, a light reflection pattern of the sub-ridge region (28, 58) being different than that of the main ridge region (24, 54); and a second direction ridge pattern (30, 60) having the main ridge region (34, 64), at which the extending direction of the main ridges (32A, 32B, 32C, 32D, 62A, 62B) is a second direction that is different than the first direction, and the sub-ridge region (38, 68), at which the extending direction of the sub-ridges (36A, 36B, 36C, 36D 66A, 66B, 66C, 66D) is the second direction that is different than the first direction, wherein a plurality of the first direction ridge patterns (20, 50) and the second direction ridge patterns (30, 60) are disposed so as to be lined up alternately at the decorative concave portion (18, 48), characterized in that an interval between sub-ridges (26A, 26B, 26C, 26D 56A, 56B, 56C, 56D, 36A, 36B, 36C, 36D 66A, 66B, 66C, 66D) that are adjacent to one another is more narrow than an interval between main ridges (22A, 22B, 22C, 22D, 52A, 52B, 32A, 32B, 32C, 32D 62A, 62B) that are adjacent to one another. a decorative concave portion (18, 48) that is formed at an outer surface of a tire side portion; a first direction ridge pattern (20, 50) having a main ridge region (24, 54), which has a plurality of main ridges (22A, 22B, 22C, 22D, 52A, 52B) that project out from a bottom surface (18A, 48A) of the decorative concave portion (18, 48) and that are disposed in parallel such that an extending direction thereof is a first direction, and a sub-ridge region (28, 58), which has a plurality of sub-ridges (26A, 26B, 26C, 26D 56A, 56B, 56C, 56D) that project out from the bottom surface (18A, 48A) of the decorative concave portion (18, 48) and that are disposed in parallel such that an extending direction thereof is the first direction, a light reflection pattern of the sub-ridge region (28, 58) being different than that of the main ridge region (24, 54); and a second direction ridge pattern (30, 60) having the main ridge region (34, 64), at which the extending direction of the main ridges (32A, 32B, 32C, 32D, 62A, 62B) is a second direction that is different than the first direction, and the sub-ridge region (38, 68), at which the extending direction of the sub-ridges (36A, 36B, 36C, 36D 66A, 66B, 66C, 66D) is the second direction that is different than the first direction, wherein a plurality of the first direction ridge patterns (20, 50) and the second direction ridge patterns (30, 60) are disposed so as to be lined up alternately at the decorative concave portion (18, 48), characterized in that an interval between sub-ridges (26A, 26B, 26C, 26D 56A, 56B, 56C, 56D, 36A, 36B, 36C, 36D 66A, 66B, 66C, 66D) that are adjacent to one another is more narrow than an interval between main ridges (22A, 22B, 22C, 22D, 52A, 52B, 32A, 32B, 32C, 32D 62A, 62B) that are adjacent to one another.