FURROW-OPENING TIRE

A tire (1) for a grooved roller comprises a sole (3) by means of which the tire (1) is mounted on a support (2) of an agricultural roller, a tread (5) opposite the sole (3), and two sidewalls (7; 9) connecting the tread (5) to the sole (3). The sole (3), the tread (5) and the sidewalls (7; 9) jointly define a non-inflatable chamber (11). The tread (5) comprises at least one ridge (51) and two shoulders (53; 55) each connecting the ridge (51) to a respective sidewall (7; 9). The chamber (11) extends at least partly laterally under the shoulders (53; 55) and radially in the ridge (51).