Tire having a tread with inserted fibers

A tire (1) comprises a pair of opposing bead portions (4); a pair of opposing sidewall portions (3), each sidewall portion connected to one of the respective bead portions; a crown portion (2) extending axially between and connecting the opposing sidewall portions (3), the crown portion (2) including a tread portion (5) having inserted fibers (20); the tire comprises also at least one carcass ply (6) extending between the bead portions and through the crown portion and opposing sidewall portions; and a belt reinforcement structure (7) positioned in the crown portion (2) at a position radially inward of the tread portion (5) and radially outward of the carcass (6); in the illustrated example, the tread (5) has four main circumferential ribs (8, 9, 10 and 11) defined by circumferential grooves (12, 13 and 14), wherein the four ribs comprise fibers (20) regularly inserted in the tread (5), wherein projection of the inserted fibers (20) on an equatorial plane have inclination angles in a range of 10 to 55 degrees relative to the radial direction.