AIRLESS TIRE

[Problem to be solved] To provide an airless tire that has a small rolling resistance. [Solution] An airless tire 1 is provided that includes a cylindrical tread ring 2 that has a ground contact surface (2a). The tread ring 2 has therein a reinforcing body 6. The reinforcing body 6 includes an annular first reinforcing cord layer 7 that extends in a tire circumferential direction, an annular second reinforcing cord layer 8 that is arranged on a tire radial direction inner side of the first reinforcing cord layer 7 and extends in the tire circumferential direction, and a shear layer 9 that is formed of an elastomer and is arranged between the first reinforcing cord layer 7 and the second reinforcing cord layer 8. The shear layer 9 includes a first portion 10 and a second portion 11, a loss tangent (tan´) and a shear modulus (Ee) (unit: MPa) of the first portion 10 at a temperature of 30 °C satisfying the following Equations (1) and (2), and the second portion 11 being formed of a material different from the first portion 10. tan´ ¦ 0.06 Ee / tan´ § 1500