In a pneumatic tire, among land portions located on both sides of a center circumferential main groove, a first land portion includes a first circumferential narrow groove, and a second land portion includes a second circumferential narrow groove; among regions defined by the first circumferential narrow groove in the first land portion, a side adjacent to the center circumferential main groove is defined as a first-land-portion first region, and the other side is defined as a first-land-portion second region; among regions defined by the second circumferential narrow groove in the second land portion, a side adjacent to the center circumferential main groove is defined as a second-land-portion first region, and the other side is defined as a second-land-portion second region; the first-land-portion first region and the second-land-portion first region have plane regions; and lateral grooves are formed in the first-land-portion second region and the second-land-portion second region.

Tread (10) for a tire of an off-road vehicle. Total width Wt of the tread is greater than 600 mm and has at least three circumferential main grooves (1, 2, 3, 4) at least 60 mm deep that divide the tread into intermediate ribs (51, 52, 53) and edge ribs (8). The edge ribs have a width≤0.25 Wt. At least one of the intermediate ribs (51, 52, 53) has fine grooves (61, 62, 63) of depth H1 delimiting blades of material (71, 72, 73) of mean width B1<2H1. Grooves (61, 62, 63) are oriented in the axial direction of the tire. Each intermediate rib (51, 52, 53) has a mean width≤0.25 Wt and ≥0.75 Ht (thickness of material to be worn away). Grooves, (61, 62, 63) have, over a height H12 at least equal to 65% of H1, a width≤ to the value obtained from 0.04√{square root over (B1.Math.H1)}.

A passenger vehicle tire having rolling resistance without negatively affecting the grip and behaviour. The tread (2) has a radial height H.sub.S between 5 mm and 8 mm, a volumetric void ratio T.sub.EV between 22% and 30%, a total volume V.sub.CP of the main voids (241) at least equal to 80% of the total volume V.sub.C of the voids (24), and comprises an elastomeric compound having a glass transition temperature T.sub.g between 22° C. and 5° C., a Shore A hardness between 45 and 65, and a dynamic loss tgδ at 23° C. at least equal to 0.13 and at most equal to 0.39. The metal reinforcers of the working layers (41, 42) are steel monofilaments having a cross section S with a smallest dimension Dmin between 0.20 mm and 0.50 mm. The monofilaments distributed at a density d.sub.T between 100 threads/dm 200 threads/dm, each working layer (41, 42) having a mean radial thickness E.sub.T between D+0.1 mm and D+0.6 mm.

A tire for which a mounting direction to a vehicle is specified, has a tread portion axially divided into five land portions each provided with sipes. The five land portions are a first shoulder land portion, a first middle land portion, a crown land portion, a second middle land portion, and a second shoulder land portion having ground contacting surface widths W1s, W1m, Wc, W2m and W2s, respectively, which satisfy the following condition: W1s>W1m>Wc>W2m=>W2s under a 50% load state of the tire.

A tire for an agricultural vehicle with a metal crown reinforcement, with improved endurance of the crown reinforcement thereof through the choice of a suitable tread. For each tread portion (21), positioned axially, with respect to the equatorial plane (E) of the tire (1), at an axial distance DE at most equal to 0.36*L, and having an axial width LE equal to 0.08*L, the product TEVL*(H/B) of the local volumetric void ratio of the tread portion (21) and the circumferential slenderness H/B of each tread pattern element (22) of said tread portion (21) is at most equal to 0.35.

An object of the present disclosure is to provide a tire having improved overall performance of fuel efficiency, breaking resistance, and abrasion resistance. The tire comprises a tread, wherein a cap rubber layer of an outer surface of the tread is formed of a rubber composition comprising a rubber component having a total content of 90% by mass or more of an isoprene-based rubber and a butadiene rubber and silica having a nitrogen adsorption specific surface area (N.sub.2SA) of 180 m.sup.2/g or more, wherein a total cis content in the butadiene rubber is less than 90% by mass, wherein a tan δ at 70° C. of the rubber composition of the cap rubber layer is less than 0.15, wherein the tread has circumferential grooves extending continuously in a tire circumferential direction and lateral grooves extending in a tire width direction, and wherein a ratio of a total area S2 of the lateral grooves to a total area S1 of the circumferential grooves (S2/S1) is less than 0.80.

A motorcycle tyre has a tread band including a central portion and two shoulder portions arranged at axially opposite sides of the central portion. The central portion includes a first plurality of grooves extended according to a substantially longitudinal direction and alternatively arranged at opposite sides of the equatorial plane of the tyre. Each groove of the first plurality of grooves has a substantially curvilinear course such as to form a concavity. The central portion further includes a sub-portion substantially free of grooves placed astride the equatorial plane of the tyre. Each of the shoulder portions includes a second plurality of grooves arranged obliquely relative to the equatorial plane of the tyre.

A tire includes a tread portion including an outside tread edge located outwardly of a vehicle when being mounted to the vehicle, an inside tread edge located inwardly of a vehicle when being mounted to the vehicle, circumferential grooves extending continuously in the tire circumferential direction, and lateral grooves. The circumferential grooves includes an outside shoulder circumferential groove, an outside crown circumferential groove, an inside crown circumferential groove and an inside shoulder circumferential groove which are arranged in this order from the outside tread edge side to the inside tread edge side, and a groove width W1 of the outside shoulder circumferential groove, a groove width W2 of the outside crown circumferential groove, a groove width W3 of the inside crown circumferential groove and a groove width W4 of the inside shoulder circumferential groove satisfy the following relation: W1<W2<W3<W4.

In a tire, each of first and second circumferential grooves include groove portions arranged discontinuously in a row in a circumferential direction. The groove portions are arranged in a staggered manner in the circumferential direction. A distance D1 from an equatorial plane to a center line of the first circumferential groove and a distance D2 from the equatorial plane to a center line of the second circumferential groove satisfy 0.90≤D2/D1≤1.10. A maximum groove width W1 of the groove portion of the first circumferential groove and a maximum groove width W2 of the groove portion of the second circumferential groove satisfy 0.90≤W2/W1≤1.10. A maximum circumferential length L1 of the groove portion of the first circumferential groove and a maximum circumferential length L2 of the groove portion of the second circumferential groove satisfy 0.90≤L2/L1≤1.10.

A tire includes a mounting direction indicator that indicates a tire mounting direction with respect to a vehicle. The tire includes a first circumferential groove and a second circumferential groove extending intermittently or continuously in a tire circumferential direction. Additionally, the second circumferential groove is located further on an inner side than the first circumferential groove in a vehicle width direction in a state in which the tire is mounted on a vehicle. Additionally, a groove volume V1 of the first circumferential groove and a groove volume V2 of the second circumferential groove have the relationship V1<V2.