Abstract: A pneumatic tire includes a first tread-half region from the tire equator to a first tread edge. In the first tread-half region, a crown land portion and a middle land portion are not provided with any grooves having widths equal to or more than 2 mm. In the first tread-half region, crown, middle and shoulder portions are respectively provided with a first crown sipe, a first middle sipe and a first shoulder sipe each having a width less than 2 mm. The first crown sipe, the first middle sipe and the first shoulder sipe are respectively configured as arc shapes having radiuses R1, R2 and R3 of curvature to protrude in a first circumferential direction side, wherein the radiuses R1, R2 and R3 are satisfied the following relation: R1<=R2<=R3, and R1<R3.

Abstract: An outer shoulder land region includes first shoulder lateral grooves each extending axially inwardly from an outer tread ground contact edge to have a first inner end in the tyre axial direction within the outer shoulder land region, first outer shoulder lateral sipes each connecting between the first inner end and an outer shoulder main groove, and second outer shoulder lateral sipes each extending axially inwardly from the outer tread ground contact edge to have a second inner end positioned on an axially outer side of the first inner ends. An outer middle land region includes outer middle lateral sipes each smoothly connected with the respective first outer shoulder lateral sipe with the outer shoulder main groove therebetween. Each of the outer middle lateral sipes connects between the outer shoulder main groove and an outer crown main groove and has a third inner end within the outer middle land region.

Abstract: A tire 1 comprises shoulder regions 4 each provided with first lateral grooves 7 and second lateral grooves 8 Each of the first lateral grooves 7 comprises an inner portion 11 extending axially outwardly from has an inner end (7i) arranged axially outside a crown main groove 3 with a space therebetween and obliquely at an angle ?1 with respect to the tire axial direction, and an outer portion 12 extending obliquely at an angle ?2 smaller than the angle ?1 with respect to the tire axial direction so as to cross a tread edge (Te). Each of the second lateral grooves 8 is arranged between adjacent first lateral grooves and extends axially outwardly from an inner end (8i) thereof arranged axially outside the crown main groove and obliquely in the same direction as the first lateral grooves 7 so as to terminate without reaching the tread edge (Te).

Abstract: A pneumatic tire includes a first tread-half region from the tire equator to a first tread edge. In the first tread-half region, a crown land portion and a middle land portion are not provided with any grooves having widths equal to or more than 2 mm. In the first tread-half region, crown, middle and shoulder portions are respectively provided with a first crown sipe, a first middle sipe and a first shoulder sipe each having a width less than 2 mm. The first crown sipe, the first middle sipe and the first shoulder sipe are respectively configured as arc shapes having radiuses R1, R2 and R3 of curvature to protrude in a first circumferential direction side, wherein the radiuses R1, R2 and R3 are satisfied the following relation: R1<=R2<=R3, and R1<R3.

Abstract: A pneumatic tire includes a tread having a pair of crown grooves, a pair of shoulder grooves, a crown land, a pair of middle lands, and a pair of shoulder lands. No grooves having width of 2 mm or more are formed in the crown and middle lands, the tread has first and second halves and has first sipes in the first half such that each has width of less than 2 mm and extends from the crown to shoulder lands via the grooves, second sipes in the second half such that each has width of less than 2 mm and extends from the crown to shoulder lands via the grooves without reaching the ground contact edge, and third sipes in the middle land in the second half such that each has width of less than 2 mm and extends in axial direction between second sipes adjacent in circumferential direction.