TIRE
DRIVE
June 4, 2026
Provided is a tire () including a tread rubber layer () located at the outermost surface of a tread portion (), and a reinforcing layer that is located inward thereof in the tire radial direction and includes an organic fiber cord. The tread rubber layer () includes a rubber component, a resin component, and a filler. The rubber component includes an isoprene skeleton rubber and a styrene-butadiene rubber. At least one type of the styrene-butadiene rubber has a glass transition temperature of less than −40° C. The resin component has a difference of the SP value relative to that of the isoprene skeleton rubber of 1.40 (cal/cm)or less. The tread rubber layer () satisfies the formula: mass ratio of resin component/isoprene skeleton rubber≥0.5. The organic fiber cord has an elastic modulus at 1-2% elongation of 4.0 to 30 mN/(dtex·%).
Discussion in the ATmosphere