A TREAD FOR A TIRE

A tread (100) for a tire (1) is disclosed. The tread (100) comprises a first circumferential groove (10) extending in a circumferential direction for entirely encircling the tire (1) when the tread (100) is mounted to a tire (1), the first circumferential groove (10) having two sidewalls (12) extending radially outward from an annular base (14), each sidewall (12) defining a plane perpendicular to a rotational axis of the tire (1) when the tread (100) is mounted to the tire (1). The tread (100) further comprises a first groove rib (210) projecting radially outward from the annular base (14) of the first circumferential groove (10), the first groove rib (210) extending circumferentially and entirely encircling the tire (1) when the tread (100) is mounted to the tire (1), the first groove rib (210) having two sidewalls (212) extending radially outward from the annular base (14) of the first circumferential groove (10) to a radially outermost annular surface (214) of the first groove rib (210), each sidewall (212) of the first groove rib (210) defining a plane perpendicular to a rotational axis (5) of the tire (1) when the tread (100) is mounted to the tire (1), the sidewalls (212) of the first circumferential groove (10) extending circumferentially and parallel to the sidewalls (212) of the first groove rib (210), the first groove rib (210) having a radial height, as measured from the annular base (14), less than a radial height of the first circumferential groove (10).