A composite solid tire 10 including an inner rubber layer 14 and an outer layer 18 formed of a polyurethane elastomer is provided which has an improved durability by effectively improving the retention strength of the inner and outer layers. The composite solid tire 10 includes circumferential grooves 22, 22 having a predetermined depth formed in the outer circumferential surface 16 of the inner rubber layer 14 and anchor portions 24, 24 formed of the same polyurethane elastomer as the outer layer 18 and integrally formed with outer layer 18. The anchor portions 24, 24 are fitted into the circumferential grooves 22, 22 so that the outer layer 18 is integrally formed on the outer circumferential surface of the inner rubber layer.
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