PNEUMATIC TIRE

DRIVE June 12, 2024
Source
A pneumatic tire (1) comprising a tread portion (2); a pair of sidewall portions (3); a pair of bead portions (4); and a carcass (6). At least one of the sidewall portions (3) includes a first sidewall rubber (10) arranged outside the carcass (6) in a tire axial direction,wherein the first sidewall rubber (10) includes a different color rubber layer (11) and a barrier rubber layer (12), the different color rubber layer (11) has a color different from a basic color of an outer surface of the at least one of the sidewall portions (3), at least a part of the different color rubber layer (11) is exposed in the outer surface of the at least one of the sidewall portions (3), the barrier rubber layer (12) is arranged between the different color rubber layer (11) and the carcass (6), the barrier rubber layer (12) includes a first portion (16) having a rubber compounding to suppress migration of rubber compounding agents on the carcass side to the different color rubber layer (11), the barrier rubber layer (12) is arranged between the different color rubber layer (11) and a tread rubber (2G) forming the tread portion (2), and the barrier rubber layer (12) includes a third portion (18) having a rubber compounding to suppress migration of rubber compounding agents on the tread rubber side to the different color rubber layer (11).

Discussion in the ATmosphere

Loading comments...