A pneumatic tire includes a tread portion provided with a circumferentially extending zigzag shoulder main groove arranged proximate to a tread edge, and a plurality of shoulder lateral grooves each extending axially outwardly from the shoulder main groove. Each of the shoulder lateral grooves includes a first portion and second portion. The first portion includes a first groove wall and an axially inner end connected to the shoulder main groove. The second portion is arranged axially outward of the first portion and includes a second groove wall. The second portion has a groove width and a groove depth greater than those of the first portion. The first groove wall of the first portion and the second groove wall of the second portion are smoothly continued.

A pneumatic tire is provided with four or more circumferential main grooves extending in a tire circumferential direction and five or more land portions defined by the circumferential main grooves. Additionally, second land portions are each provided with first through lug grooves and second through lug grooves that extend through the second land portion in a tire lateral direction and are adjacently arranged in the tire circumferential direction. Crossing angles of the first through lug grooves and the second through lug grooves with respect to the outermost circumferential main grooves are mutually different.

A pneumatic tire comprises an inner circumferential groove and an outer circumferential groove in a tread portion and extending in a tire circumferential direction. A land portion between circumferential grooves is defined by the inner and outer circumferential grooves. The pneumatic tire includes first and second auxiliary grooves disposed in the tire circumferential direction that communicate with the inner and outer circumferential grooves, respectively, and terminate within the land portion between circumferential grooves. The first auxiliary grooves and the second auxiliary grooves have a non-intersecting, alternating arrangement. At least one narrow groove is disposed between adjacent first auxiliary grooves. At least two narrow grooves are disposed between adjacent second auxiliary grooves. The at least two narrow grooves between second auxiliary grooves are disposed in a greater number than the number of the at least one narrow groove between first auxiliary grooves.

A pneumatic tire includes a circumferential main groove extending in a tire circumferential direction and a land portion defined by the circumferential main groove. The circumferential main groove includes a groove opening portion and a groove bottom portion each having a zigzag shape or a wave-like shape with an amplitude in a tire width direction. An outer maximum amplitude position of an outer edge portion in the groove opening portion is disposed to be offset in a tire circumferential direction with respect to an outer maximum amplitude position of an outer edge portion of the corresponding groove bottom portion.

A pneumatic tire includes a tread portion provided with a pair of shoulder main grooves and at least one crown main groove between the shoulder main grooves to define a pair of middle portions between the adjacent shoulder main groove and crown main groove. The middle portions are provided with inner middle lug grooves and outer middle lug grooves. Each outer middle lug groove extends from the shoulder main groove to its axially inner end while decreasing its groove width. The outer middle lug groove are arranged with alternately arranged first pitches and second pitches, wherein the second pitches are larger than the first pitches. Each inner middle lug groove extends from the crown main groove to its axially outer end while decreasing its groove width. The inner middle lug grooves are arranged with substantially the same pitches.

A tread pattern is provided with: shoulder lug grooves open at ground contact ends; center lug grooves each having opposite ends; circumferential primary grooves each formed in a wavy shape by connecting ends of the center lug grooves and the inner ends of the shoulder lug grooves in the width direction of the tire; and center blocks defined by the center lug grooves and the pair of circumferential primary grooves. The width of the circumferential primary grooves is smaller than the width of the shoulder lug grooves. The center lug grooves are tilted relative to both the circumferential direction and the width direction of the tire and each have a third groove turning portion and a fourth groove turning portion which protrude in the different directions in the circumferential direction of the tire.

A tire includes a tread portion provided with a first main groove disposed between the tire equator and a tread edge and extending continuously in the tire circumferential direction; outward transverse grooves extending axially outwardly from the first main groove; and inward transverse grooves extending axially inwardly from the first main groove. The first main groove is a zigzag groove including axially outer segments extending along the tire circumferential direction; axially inner segments extending along the tire circumferential direction and positioned axially inside the axially outer segments; and oblique segments linking therebetween. Each of the axially outer segments is connected with one of the outward transverse grooves and one of the inward transverse grooves.

An off-road tread profile with radially elevated profile elements, which are separated by circumferential channels, and with transversely running channels which open into circumferential channels, wherein the circumferential channels are formed, along their extent over the circumference of the tire, with a varied axial inclination, wherein, in the channel base of a circumferential channel, elevated stone deflectors are formed so as to be free from contact with the channel walls, which stone deflectors are formed from a cylindrical or frustoconical central body with maximum diameter D, the cylinder or cone axis of which is oriented in the radial direction, and from in each case one web-like body situated in front of the body in the extent direction of the circumferential channel and one web-like body situated behind, wherein the two web-like bodies are each formed so as to extend from the shell surface of the central body so as to be oriented parallel to the extent direction of the circumferential channel and point radially away from the central body and with a maximum width b, where (0.5 D)≥b≥1 mm, wherein central bodies are positioned in each case exclusively in circumferential extent regions of opening-in points of at least one transversely running channel into the circumferential channel.

The present technology provides a heavy duty pneumatic tire with a tread portion having a tread pattern including: a pair of circumferential primary grooves defined in a wave-like shape and extending in the tire circumferential direction; center lug grooves; center blocks; and circumferential secondary grooves extending in regions of the center blocks and open to the center lug grooves. The center lug grooves have two groove turning portions turned in a bend shape or a curved shape. The circumferential secondary grooves extend in an inclined manner relative to the tire circumferential direction. An inclination angle (θ.sub.4) of the circumferential secondary grooves relative to the tire circumferential direction is different from an inclination angle (θ.sub.1) of portions of the circumferential primary grooves relative to the tire circumferential direction, the portions extending toward the same side as a side in the tire width direction, toward which the circumferential secondary grooves are inclined.

A pneumatic tire with improved heat build-up resistance in a land portion in a tread center region. The pneumatic tire is provided with a tread pattern that includes a plurality of center lug grooves (14) disposed at intervals in a tire circumferential direction that cross a tire equator line; a plurality of shoulder lug grooves (12A, 12B) disposed in intervals between the plurality of center lug grooves in the tire circumferential direction extending outward in the tire width direction, an inner end in the tire width direction being disposed outward of an end of the center lug groove in the tire width direction; a pair of circumferential primary grooves (11A, 11B) extending around an entire circumference of the pneumatic tire in a wave-like shape with the ends of the center lug grooves and the inner ends of the plurality of shoulder lug grooves in the tire width direction alternately connecting to the pair of circumferential primary grooves (11A, 11B); and a circumferential secondary groove (10) disposed on the tire equator line around the entire circumference of the pneumatic tire that intersects the center lug grooves.

A straight line that joins an intersection portion between the center lug groove and the circumferential secondary groove and the end of the center lug groove has an inclination angle with respect to the tire circumferential direction ranging from 55° to 75°.