The invention relates to the technical field of
tire manufacturing, and discloses a low-rolling-resistance
truck radial tire which comprises a
tread, a sidewall, a belted layer, a tire body, a steel wire ring and steel wire wrapping cloth, the outer contour of the
tread is of an arc-shaped structure on a tire interface, the
arc length of the
tread is L, the
arc length L adopts the design of two sections of tangent arcs, and the
arc length L is larger than the arc length L; the tread is provided with three pattern grooves which divide the tread into four same pattern blocks, the three pattern grooves are composed of two conventional
open type longitudinal grooves and a Y-shaped longitudinal groove in the longitudinal direction, and the Y-shaped longitudinal groove is located between the two
open type longitudinal grooves. According to the
truck radial tire with the low
rolling resistance, by optimizing the structural design, the pattern design and the formula design of the tire, the tire has the ultra-low
rolling resistance performance, and meanwhile eccentric wear and different wear can be effectively reduced.