A tire includes medial knobs and lateral knobs in right and left zones extending around the circumference. The tire includes a central zone in between two arrays of medial knobs. The central zone may include no knobs or knobs with a height less than 50% of the height of the lateral knobs.

A two-wheeled vehicle tyre includes a tread portion which is provided with a row of crown blocks arranged on a tyre equator and a row of middle blocks arranged axially outwardly of the row of crown blocks. Circumferential pitch lengths of directly adjacent crown blocks are greater than circumferential pitch lengths of directly adjacent middle blocks.

A pneumatic tire includes chamfered sipes in a land portion each including a chamfered portion, and non-chamfered sipes in the land portion each not including the chamfered portion. The chamfered sipe includes one end communicating with the main groove that defines the land portion and the other end terminating within the land portion. The chamfered and non-chamfered sipes are alternately disposed in the circumferential direction. Of the non-chamfered sipes on both sides in the circumferential direction of the chamfered sipe, a relationship between a distance a and a distance b is in the range 1.5≤(b/a)≤12, where the distance a is between the chamfered sipe and a near sipe corresponding to the non-chamfered sipe located on a side closest to the chamfered sipe, and the distance b is between the chamfered sipe and the non-chamfered sipe located further from the chamfered sipe in the circumferential direction.

A tire includes a tread formed with: circumferential grooves extending continuously in a tire circumferential direction; lateral grooves connecting the circumferential grooves in a tire axial direction; and blocks divided by the circumferential grooves and the lateral grooves. In the lateral groove, a groove bottom is raised to form a tie bar connecting the blocks in the tire circumferential direction. The tie bar is formed with a groove portion penetrating the tie bar in the tire axial direction. In a state where the tire is assembled to a regular rim, filled with a regular internal pressure, loaded with a regular load, and contacting a flat surface at a camber angle 0°, a side wall formed on the tie bar by the groove portion on one side in the tire circumferential direction does not contact a side wall on the other side in the tire circumferential direction.

In a cross-sectional view of a tire, a line connecting, by a single arc, a ground contact edge in a shoulder land, and midpoints of center and middle lands in a width direction is a profile. A distance between intersection points of the profile and lines extended from groove walls, on sides of the center land, of a main groove adjacent to both ends of the center land in the width direction is defined as Wc. Ends of the center land and of the middle land on both sides of the main groove are recessed toward the inner side in the radial direction relative to the profile, the recess of the middle land end is larger than the recess of the center land end, and a range of 0.03Wc from the center land end on the middle land side does not touch the ground.

A tyre comprising an adaptive tread, the adaptive tread comprising a plurality of surface sections, wherein each surface section can move without deformation relative to the other surface sections to form a tread pattern.

A tire for running on rough terrain for which an intended tire rotational direction is specified. The tread portion is provided with blocks raised from a tread base portion. Each block has a first side wall surface comprising a radially outer portion extending substantially straight and radially inwardly, while inclining toward the toe side in the intended tire rotational direction, and a radially inner portion extending from the radially outer portion to the tread base portion while curving in an arc shape. The radially outer portion has a radial length of from 30% to 70% of a radial height of the block.

A tire for running on rough terrain for which an intended tire rotational direction is specified, and which comprises a tread portion provided with crown blocks disposed on the tire equator. Each of the crown blocks comprises a V-shaped crown block main portion which bends convexly toward a circumferential direction opposite to the intended tire rotation direction, and only two crown fin portions projecting from the crown block main portion toward the above-said circumferential direction opposite to the intended tire rotation direction.

Provided is a tire including a tread portion. The tread portion includes two circumferential grooves and three land portions. The three land portions include a crown land portion disposed on a tire equator, and two shoulder land portions including tread contact ends. At least one of the shoulder land portions includes a plurality of main inclined grooves and a plurality of subsidiary inclined grooves. The main inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends disposed outwardly of the tread contact ends Te in the tire axial direction. The subsidiary inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends ending in the shoulder land portions.

A pneumatic tire includes block rows which are arranged in a tire width direction and each of which includes a plurality of blocks defined by main grooves extending in a tire circumferential direction and lateral grooves extending in a tire width direction. The plurality of block rows includes inner block rows which are the block rows other than an outermost block row located most outwardly in the tire width direction. Numbers of the blocks included in the inner block rows increase toward an inner side in the tire width direction. The blocks in each of the inner block rows include an auxiliary-grooves-formed block having, on an outer surface thereof, an auxiliary groove region in which a plurality of drain auxiliary grooves extending in the tire circumferential direction are formed. Occupied areas in each of the inner block rows decrease toward the inner side in the tire width direction.