PNEUMATIC TIRE
DRIVE
December 6, 2023
A pneumatic tire that achieves both reduction of rolling resistance and improvement of uneven wear resistance is provided. The pneumatic tire includes: a tread portion including at least two or more rubber layers including a surface layer and an inner layer in a center region centered at a tire equator line and having a width that is 50% of a ground-contact width of a ground-contact surface; and sidewall portions. The tread portion has a circumferential groove extending in a circumferential direction, and includes a plurality of land portions demarcated by the circumferential groove and ground-contact end portions. An outer portion of each sidewall portion is overlapped on an outer side of an end portion in a tire width direction of the tread portion, and each end portion in the width direction of the inner layer is located in a part of an interface between the surface layer and the sidewall portion. A complex elastic modulus E∗1 (MPa) of the surface layer and a complex elastic modulus E∗2 (MPa) of the inner layer satisfy (E∗2/E∗1)
Discussion in the ATmosphere