Airless tire

[Solution(s)] An airless tire is structured in such a way that a tread ring and a hub are connected by a spoke. Regarding the distribution of tire axial component lengths (tx) at connection portions of the spoke and the tread ring along the entire tire circumference, the ratio (E1) of a first region (Y1) where the component length (tx) is zero times the tread ring width (W), the ratio (E2) of a second region (Y2) where the component length (tx) is greater than zero times but smaller than 0.6 times the width (W), and the ratio (E3) of a third region (Y3) where the component length (tx) is no smaller than 0.6 times but no greater than 1.0 times the width (W) satisfy the following formulas (1)∼(3) respectively. 0 ≦ E ⁢ 1 ≦ 0.5 0 < E ⁢ 2 ≦ 1.0 0 ≦ E ⁢ 3 < 0.3