PNEUMATIC TIRE
DRIVE
April 26, 2023
A pneumatic tire includes a tread portion, a pair of sidewall portions, a pair of bead portions, and a carcass. At least one of the sidewall portions includes a first sidewall rubber (10). The first sidewall rubber includes a base rubber layer (9), a different color rubber layer (11), and a barrier rubber layer (12). The base rubber layer is in contact with the carcass. At least a part of the different color rubber layer is exposed in the outer surface of the at least one of the sidewall portions. The barrier rubber layer is arranged between the different color rubber layer and the base rubber layer. The barrier rubber layer has a rubber compounding to suppress migration of rubber compounding agents on the base rubber layer side to the different color rubber layer. The barrier rubber layer (12) has a thickness of 1.0 mm or less.
Discussion in the ATmosphere