A pneumatic tire comprising a tread part, wherein the tread part has two or more circumferential grooves extending continuously in a circumferential direction of the tire, a pair of shoulder land parts partitioned by the circumferential grooves and a center land part located between the pair of shoulder land parts, and width direction grooves, and may arbitrarily have sipes; wherein, when a tire cross-sectional width is Wt (mm) and a tire outer diameter is Dt (mm), Wt and Dt satisfy Equation below; wherein, when a length of the tire in the circumferential direction of the tire along the tire equator C is La and a total sum of a total Lb1 of edge component lengths in a width direction of the width direction grooves and a total Lb2 of edge component lengths in a width direction of the sipes is Lb, La and Lb satisfy Equation below, wherein the edge component lengths in the width direction of the width direction grooves and the sipes refer to lengths of projections in the width direction of the width direction grooves and sipes: wherein the tread part has at least one rubber layer composed of a rubber composition comprising a rubber component; and wherein tan δ at 5°C (5°C tan δ), tan δ at 20°C (20°C tan δ), and tan δ at 50°C (50°C tan δ) of the rubber composition measured under conditions of frequency 10 Hz and elongation strain 2.5% satisfy Equation and Equation below: 1963.4 mm ≦ π / 4 × Dt ∧ 2 / Wt ≦ 2827.4 mm; 0.10 ≦ La / Lb ≦ 0.50. 0.01 ≦ 20 ° C tan δ + 50 ° C tan δ / 2 ≦ 0.17; and 0.30 ≦ 5 ° C tan δ + 20 ° C tan δ / 2 ≦ 0.60, wherein 5°C tan δ of the rubber composition is 0.70 or more; wherein 20°C tan δ of the rubber composition is 0.15 or less; and wherein tan δ is measured according to the method defined in the description. wherein the tread part has two or more circumferential grooves extending continuously in a circumferential direction of the tire, a pair of shoulder land parts partitioned by the circumferential grooves and a center land part located between the pair of shoulder land parts, and width direction grooves, and may arbitrarily have sipes; wherein, when a tire cross-sectional width is Wt (mm) and a tire outer diameter is Dt (mm), Wt and Dt satisfy Equation below; wherein, when a length of the tire in the circumferential direction of the tire along the tire equator C is La and a total sum of a total Lb1 of edge component lengths in a width direction of the width direction grooves and a total Lb2 of edge component lengths in a width direction of the sipes is Lb, La and Lb satisfy Equation below, wherein the edge component lengths in the width direction of the width direction grooves and the sipes refer to lengths of projections in the width direction of the width direction grooves and sipes: wherein the tread part has at least one rubber layer composed of a rubber composition comprising a rubber component; and wherein tan δ at 5°C (5°C tan δ), tan δ at 20°C (20°C tan δ), and tan δ at 50°C (50°C tan δ) of the rubber composition measured under conditions of frequency 10 Hz and elongation strain 2.5% satisfy Equation and Equation below: 1963.4 mm ≦ π / 4 × Dt ∧ 2 / Wt ≦ 2827.4 mm; 0.10 ≦ La / Lb ≦ 0.50. 0.01 ≦ 20 ° C tan δ + 50 ° C tan δ / 2 ≦ 0.17; and 0.30 ≦ 5 ° C tan δ + 20 ° C tan δ / 2 ≦ 0.60, wherein 5°C tan δ of the rubber composition is 0.70 or more; wherein 20°C tan δ of the rubber composition is 0.15 or less; and wherein tan δ is measured according to the method defined in the description. wherein the tread part has at least one rubber layer composed of a rubber composition comprising a rubber component; and wherein tan δ at 5°C (5°C tan δ), tan δ at 20°C (20°C tan δ), and tan δ at 50°C (50°C tan δ) of the rubber composition measured under conditions of frequency 10 Hz and elongation strain 2.5% satisfy Equation and Equation below: 1963.4 mm ≦ π / 4 × Dt ∧ 2 / Wt ≦ 2827.4 mm; 0.10 ≦ La / Lb ≦ 0.50. 0.01 ≦ 20 ° C tan δ + 50 ° C tan δ / 2 ≦ 0.17; and 0.30 ≦ 5 ° C tan δ + 20 ° C tan δ / 2 ≦ 0.60, wherein 5°C tan δ of the rubber composition is 0.70 or more; wherein 20°C tan δ of the rubber composition is 0.15 or less; and wherein tan δ is measured according to the method defined in the description.