Agricultural tyre

A non-inflatable tire for an agricultural implement comprising:

• a sole;
• a tread;
• and
• a pair of sidewalls connecting the sole to the tread, the pair of sidewalls including a first sidewall and a second sidewall,
• the sole, the tread, the first sidewall, and the second sidewall jointly defining a free space, the free space having an annular overall shape and being continuous in a circumference of the tire, while an opening places the free space in fluidic communication with an outside of the tire,
• wherein the tread has a frustoconical overall shape, an apex of which is situated beyond the first sidewall,
• wherein the first sidewall extends from the sole to the tread, while the second sidewall comprises an internal portion which extends from the sole to the tread and an external portion projecting from the tread, and
• wherein the first sidewall and the tread are designed so as to jointly hold the external portion of the second sidewall in line with the internal portion, and
• wherein the external portion comprises teeth distributed around a periphery of the tread, and each of the teeth includes a peripheral surface that is parallel to a rotational axis of the tire.