A pneumatic tire 1 comprises a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tire radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tire 1 further comprises a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tire axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tire axial direction of the belt layer 7, and a water absorption rate of the noise damper 20 is in a range of from 10% to 25%.

A tire can include a pair of beads, a carcass, an inner liner, and an insulation located between the carcass and the inner liner. The carcass can include one carcass ply. The carcass ply can include a plurality of carcass cords and a topping rubber. Each carcass cord can have a total fineness of not less than 6000 dtex and not greater than 9000 dtex. The insulation can be located between first and second beads. A ratio (ta/td) of a thickness to of the topping rubber located between the insulation and the carcass cords to a thickness td of the insulation can be not less than 0.2 and not greater than 0.6.

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 pneumatic tire includes cross belts and one or more protective belts provided in the tire radial direction. A width of a widest protective belt is greater than a width of any of the cross belts. In the tire profile, a maximum projection position of the widest protective belt is A, an end position of the widest protective belt is B, a position at which a straight line a passing through position A extending in the direction normal to a tread surface intersects with the tread surface is A′, and a position at which a straight line b passing through position B extending in the direction normal to the tread surface intersects with the tread surface is B′. An angle formed between a first straight line that links position A and position B and a second straight line that links position A′ and position B′ is from 0° to 15°.

A tire comprises a tread reinforcing layer comprising a cord-reinforced part formed by winding a rubberized cord strip with at least one reinforcing cord covered with a topping rubber. The cord-reinforced part includes a mesh part in which first inclined segments and second inclined segments of the rubberized cord strip are inclined to opposite directions with respect to the tire circumferential direction. The first inclined segments intersect the second inclined segments, leaving space parts each having a quadrilateral shape. The mesh part has a tire-equator-side first region, a tread-edge-side second region and a third region therebetween, wherein the space parts within the tire-equator-side first region each have an area A1, the space parts within the tread-edge-side second region each have an area A2, and the space parts within the third region each have an area A3 which is smaller than the area A1 and larger than the area A2.

A radial tire includes a pair of bead cores, a carcass layer having one or more carcass plies extending from one of the bead cores to another of the bead cores, a tread portion circumferentially encircling the toroidal form of the carcass layer, and a belt structure. The belt structure includes a radially innermost main belt layer, a first, unreinforced cushion layer disposed on a radially outer side of the main belt layer, a second, unreinforced cushion layer disposed on a radially outer side of the first cushion layer, and a protective belt layer disposed between a radially outer side of the second cushion layer and a radially inner side of the tread portion. A radially outermost layer of the main belt layer has reinforcement cords with a specified diameter. The first cushion layer has a radial thickness between 0.5 and 4.0 times the specified diameter.

A pneumatic tire comprising a carcass 11, at least one inclined belt layer 13 having a cord extending inclined at an angle of 30 or more relative to the tire circumferential direction, and a tread 15 arranged outward in the tire radial direction of the inclined belt layer 13, wherein a circumferential cord layer 14 arranged inward in the tire radial direction of the tread 15 has a high-rigidity region and a low-rigidity region and the high-rigidity region has a lower negative ratio in a ground contact width of the tread 15 than the low-rigidity region.

A pneumatic tire 1 comprises a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tire radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tire 1 further comprises a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tire axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tire axial direction of the belt layer 7, and a water absorption rate of the noise damper 20 is in a range of from 10% to 25%.

A pneumatic tire of the present disclosure includes a resin-coated belt comprising a wire coated with a coating resin, and a base ring formed at a tire radial inner side of the resin-coated belt. The base ring is in contact with a tire widthwise outer end of the resin-coated belt. An outer end of the base ring in a tire width direction is positioned in the tire width direction outside the tire widthwise outer end of the resin-coated belt. The base ring includes a rigidity reduction portion of the base ring at a portion in the tire width direction outside the tire widthwise outer end of the resin-coated belt. The rigidity reduction portion has rigidity reduced from a tire widthwise inner side to a tire widthwise outer side.

A pneumatic tire of the present disclosure comprises a resin-coated belt and a base ring that comes in contact with a tire widthwise outer end of the resin-coated belt is provided, the base ring has a tire widthwise inner end located on an inner side of the tire widthwise outer end of the resin-coated belt in a tire width direction, the base ring has a tire widthwise outer end located on an outer side of the tire widthwise outer end of the resin-coated belt in the tire width direction, and the base ring includes a rigidity decreasing portion having a rigidity that decreases from the outer side in the tire width direction toward the inner side in the tire width direction, in a portion of the base ring on an inner side of the tire widthwise outer end of the resin-coated belt in the tire width direction.