Abstract: A solid tire (4; 8) is described comprising two or more circular layers overlapped in a radial direction. At least the outermost layer is made of elastic material and consists of an external portion or tread (16). The solid tire (4; 8) furthermore comprises at least one layer for indicating excessive wear (10), arranged in a predefined position inside the outermost portion or tread (16). The layer for indicating excessive wear (10) is made in a colour different from the one of the external portion or tread (16). The layer for indicating excessive wear (10) is made with a specific compound of materials. This specific compound of materials makes the layer for indicating excessive wear (10) easy to see. This specific compound of materials also makes the solid tire (4; 8) less hysteretic, and therefore less subject to the development of heat, when compared to similar solid tires.

Abstract: The present invention concerns a solid tyre (10?) comprising a plurality of circular layers of elastic material overlapping in the radial direction, said layers forming, proceeding from the centre towards the periphery of the tyre, an internal portion or heel (11), an intermediate portion or middle (12) and an external portion or tread (13), wherein, between said intermediate portion or middle (12) and said external portion or tread (13) a layer is interposed of indication of excessive wear (17), having a different colour with respect to that of said tread (13) and made of a material, or a mixture of materials, identical to that of said tread (13), except for the components needed to obtain a different colour.