A pneumatic tire comprises a sidewall portion provided in its radially outer region B with side protectors protruding axially outwardly from the outer surface Ba of the radially outer region B. The side protectors are arranged in the tire circumferential direction at intervals so that grooved portions are formed between the side protectors. The width W1 in the tire circumferential direction of the grooved portion is in a range of from 50% to 70% of the width W2 in the tire circumferential direction of the side protector when measured at the same radial position.

A pneumatic tire includes a pair of sidewall portions. At least one of the pair of sidewall portions is provided with circumferentially spaced protrusions protruding axially outwardly. Each of the protrusions includes a first end in a tire circumferential direction and a recess extending in the tire circumferential direction from the first end and having a terminal end terminating within the protrusion.

Provided is a tire that prevents a polyurethane foam layer from discoloring to brown. A tire comprises: a polyurethane foam layer laminated on an outer layer of the tire with a barrier layer therebetween, wherein the polyurethane foam layer contains a polyurethane foam, and the barrier layer is formed from a rubber composition containing butyl rubber as a rubber component.

A tire including a plurality of block patterns, wherein the plurality of block patterns may repeat around a circumference of the tire. The tire may further include a three dimensional chambered groove in the plurality of block patterns. The tire may further include a plurality of independent pattern blocks.

A pneumatic tire includes side blocks in each of side regions adjacent to, on an outer side in a width direction, outermost side end portions of a tread portion in the width direction. For the number N1 and total area SS1 of the side blocks in a first side region located on a first side in the width direction, the number N2 and total area SS2 of the side blocks in a second side region located on a second side in the width direction, a land portion area TS1 in a first tread region of the tread portion on a side of the first side region, and a land portion area TS2 in a second tread region of the tread portion on a side of the second side region, relationships N1>N2, TS1>TS2, and 0.95≤(SS1×TS1)/(SS2×TS2)≤1.05 are satisfied.

A tire capable of showing a sufficient cooling effect on a tire side portion when a vehicle travels at a low speed. A pneumatic tire includes a projection group in a tire side portion. A gap is formed between a first projection and a second projection. A size of the gap in a tire radial direction is smaller than a size of each of the first projection and the second projection in the tire radial direction.

A protrusion portion (110) of a pneumatic tire is formed by a plurality of protrusion parts (111) extended along a tire circumferential direction. The protrusion parts (111) are arranged with predetermined gaps therebetween so as to form a circle along the tire circumferential direction. A length (S1) of the protrusion part (111) in the tire circumferential direction is larger than a maximum width (W1) of the protrusion part (111) in a tire radial direction. In a tire side view, a narrow groove (200) extended along the tire circumferential direction is formed on a surface (111s) of the protrusion part (111).

The tire can achieve both cut resistance and mud drainage performance of the sidewall. The tire includes: a tread; sidewalls; and a plurality of side block groups on at least one of the sidewalls. Each of the side block groups protrudes from the sidewall reference plane. Each of the side block groups includes: a first side block; and a second side block. In each of said plurality of side block groups, the fi3 . . . 3rst side block 2 has a groove 23 extending from the second side block 3 toward an inside of the first side block in the tire circumferential direction D3, In each of said plurality of side block groups, the second side block 3 has a slope 35c whose height from the reference plane S2 becomes lower toward the first side block, such that the slope extends into the groove of the first side block.

A pneumatic tyre includes a tread portion, and a pair of buttress portions each extending inwardly in a tyre radial direction from a respective one of tread edges. At least one of the pair of buttress portions is provided with side protectors protruding outwardly in a tyre axial direction. The side protectors include first protectors arranged in a tyre circumferential direction. Each first protector includes a lateral V-shaped portion including a first inclined element inclined with respect to the tyre circumferential direction and a second inclined element inclined in an opposite direction to the first inclined element with respect to the tyre circumferential direction and connected to the first inclined element.

A pneumatic tire exerts an excellent blurring effect on irregularities resulting from a boundary between members in a sidewall portion. A pneumatic tire includes a serration portion formed by providing multiple basic ridges side by side at intervals in a tire circumferential direction on a surface of a sidewall portion, and multiple sub-ridges extending in a direction crossing the basic ridges and shorter than the basic ridges, which are provided without coupling the basic ridges neighboring each other.