Patent ID: 9505269
Filing Date: 2016-11-29
CPC Classification: B60C,Y02T

Claim Text:
1. A pneumatic tire comprising a tread portion, the tread portion having a tread profile comprising a center arc having a radius of curvature of 250 to 550 mm and a shoulder arc having a radius of curvature smaller than that of the center arc so that the tire has a round shoulder and a radial distance between points on the tread profile at the tire equator and the tread edge, respectively, is in a range of from 5.5 to 9.0 mm, the tread portion being provided with circumferentially continuously extending grooves which include the tread portion being further provided with a plurality of central axial grooves extending from said central main groove to said shoulder main groove, a plurality of shoulder axial grooves extending from said shoulder main groove to the adjacent tread edge so that, on each side of the tire equator, wherein the center blocks are each provided with a single center sipe, wherein the center sipe extends from its axially inner end to the shoulder main groove, and the axially inner end is positioned at an axial distance of 5 to 35% of the axial width of the center block, axially outwardly from an axial outer edge of the central main groove, the shoulder blocks are each provided with two shoulder sipes, wherein each shoulder sipe extends axially outwardly from its axially inner end beyond the tread edge, and the axially inner end is positioned at an axial distance of 10 to 40% of the axial block width of the shoulder block, axially outwardly from the axial outer edge of the shoulder main groove, the total number of the shoulder sipes is more than the total number of the center sipes, and the central axial grooves, the shoulder axial grooves, the center sipes and the shoulder sipes are inclined with respect to the tire axial direction in the same direction.