Groove widths of center main grooves are larger than groove widths of inner and outer main grooves. Plurality of lateral grooves are formed at intervals in a tire circumferential direction so as to define inner shoulder blocks belonging to an inner shoulder row. A first raised portion connecting a pair of inner shoulder blocks to each other is formed in the lateral grooves every one other on an inner main groove side. A depth of the lateral groove in the first raised portion is smaller than the depth of the lateral groove in other portions. A second raised portion is formed on the outer main groove in a region defined by an imaginary line connecting an outer intermediate block and an outer shoulder block. A depth of the outer main groove in the second raised portion is smaller than that of the outer main groove in other portions.

The invention is a tire comprising a crown comprising at least one layer of reinforcing elements. The radially outermost layer comprises at least one undulation (512). The undulations (512) in the radially outermost layer (5) are such that the points of the undulations are radially on the outside of the points of said layer (5) that are vertically beneath the centre of the bottom face (243) of the closest major groove (24) by at least a radial distance of 1.5 mm. The undulations (512) in the radially outermost crown layer make up at least 10% of the radially outer surface (ROS) of said crown layer (5). A rubber compound with a dynamic modulus G*, measured at 40° C. at 10% peak-to-peak strain at 10 Hz, that is at most equal to 3.25 MPa, makes up at least 30% of the rubber compounds vertically above said undulations.

A tire 2 includes a tread 4 on which at least three circumferential grooves 24 continuously extending in a circumferential direction are formed, and a belt 14 located radially inward of the tread 4. A ratio of a center stretch, at a center portion of the belt, indicated by the follow/Mg formula (2) to a shoulder stretch, at an end portion of the belt, indicated by the following formula (1) is not less than 1 and not greater than 3, and the shoulder stretch is not less than 1%.

(Shoulder stretch)

100×(Rsa−Rsb)/Rsb  (1)

(Center stretch)

100×(Rca−Rcb)/Rcb  (2)

A tread pattern of a pneumatic tire includes: first and second circumferential main grooves; a first circumferential narrow groove between the first and second circumferential main grooves, the first circumferential narrow groove having a narrower width than the first and second circumferential main grooves; an intermediate lug groove extending from the second circumferential main groove toward the first circumferential narrow groove, the intermediate lug groove being closed without reaching the first circumferential narrow groove; and a sipe extending from the closed end of the intermediate lug groove to connect the closed end with the first circumferential narrow groove. No lug grooves are between the first circumferential main groove and the first circumferential narrow groove, and a groove wall of the first circumferential main groove on a side of the first circumferential narrow groove circumnavigates without interruption in the tire circumferential direction.

A tread pattern of a pneumatic tire includes a pair of circumferential grooves and a plurality of siped lug grooves extending in a tire width direction between the pair of circumferential grooves and disposed at intervals in the tire circumferential direction. Each of the siped lug grooves includes a lug groove extending from a first circumferential groove of the pair of circumferential grooves and closed, and a sipe extending from a closed end of the lug groove toward a second circumferential groove and connected to the second circumferential groove. The plurality of siped lug grooves include at least one first siped lug groove extending while bending with an extension direction of the lug groove differing from an extension direction of the sipe, and at least one second siped lug groove extending linearly with the extension direction of the lug groove aligning with the extension direction of the sipe.

In a pneumatic tire, a center land portion includes center lug grooves and center blocks. The center lug grooves penetrate the center land portion. The center blocks are defined by the center lug grooves. A middle land portion includes middle lug grooves, middle blocks, a notch portion, and a middle sipe. The middle lug grooves penetrate the middle land portion. The middle blocks are defined by the middle lug grooves. The notch portion is an edge portion on the center main groove side of each of the middle blocks and formed on an extension line of each of the center lug grooves. The middle sipe extends from the notch portion and opens to an edge portion on the shoulder main groove side of each of the middle blocks.

A pneumatic tire includes circumferential main grooves extending in the tire circumferential direction and arranged side by side in the tire width direction and a land portion defined by the circumferential main grooves. The land portion includes notch portions extending in the tire width direction and connected to the circumferential main grooves and shallow groove portions connected to the notch portions, respectively, and terminating in the land portion. The height of the notch portions decreases continuously toward the circumferential main grooves connected thereto.

A pneumatic vehicle tire for utility vehicles has a profiled tread having two circumferential ribs that are adjacent and are separated by a circumferential groove of depth H formed from radially inner and outer extension sections of height H.sub.1 and H.sub.2. The groove in the radially inner extension section is a channel of height H.sub.1 and breadth B.sub.1, and in the outer extension section is configured, along its circumferential extent, with an alternating sequence of first and second circumferential regions. The two flanks in the first regions are each configured, in the transition to the outer surface of the rib, with a chamfer of height H.sub.4 such that H.sub.4<H.sub.2, and are spaced by a distance B.sub.2 along their radial extent in the outer extension section from radially inward to radially outward as far as the chamfer.

Tread of a tire (1) for a heavy-duty vehicle of civil engineering type. The tread (2), having an axial width W.sub.T and having a radial thickness H.sub.T at least equal to 70 mm, comprises at least two circumferential grooves (3) positioned axially on each side of an equatorial plane (XZ). Each circumferential groove (3) has an axial width W and a radial depth H, such that the ratio W/H is at least equal to 0.06, the axial distance C between two consecutive circumferential grooves (3) is at least equal to 12% and at most equal to 21% of the axial width W.sub.T of the tread and each of the axially outermost circumferential grooves (3) is positioned axially, with respect to the equatorial plane XZ, at an axial distance L.sub.E at least equal to 35% of the axial width W.sub.T of the tread.

A pneumatic vehicle tire in radial design that is a summer tire or all-season tire, with a profiled tread comprising rows of profile blocks and/or profile ribs running around the tire in circumferential direction, wherein the total number of sipes within each row of profile blocks and/or profile ribs is not more than 150, wherein the tread is in the form of a single layer or multiple layers with a radially outermost tread layer that extends at least over the width of the ground contact area, and wherein the profile depth of the tread is up to 6.5 mm. The tread or its radially outermost tread layer consists of a rubber material with a Shore A hardness at room temperature in accordance with DIN ISO 7619-1 of 40 ShA to 55 ShA.