	US 11,697,305 B2
	Tire for a motorcycle
Kota Tomita, Kobe (JP)
Assigned to Sumitomo Rubber Industries, Ltd., Hyogo (JP)
Filed by Sumitomo Rubber Industries, Ltd., Hyogo (JP)
Filed on Oct. 28, 2020, as Appl. No. 17/83,095.
Claims priority of application No. 2019-212483 (JP), filed on Nov. 25, 2019.
Prior Publication US 2021/0155040 A1, May 27, 2021
Int. Cl. B60C 1/00 (2006.01); B60C 11/00 (2006.01); C08F 236/10 (2006.01); C08L 9/06 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01)

CPC B60C 1/0016 (2013.01) [B60C 11/0008 (2013.01); C08F 236/10 (2013.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01); C08L 9/06 (2013.01); B60C 2011/0025 (2013.01); B60C 2200/10 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01)]

8 Claims

1. A tire for a motorcycle comprising:

a tread composed of a rubber composition, which comes into contact with a road surface, the rubber composition including:

a rubber component;

a resin selected from the group consisting of a petroleum resin, a rosin-based resin, a phenol-based resin, and a coumarone-based resin; and

carbon black in an amount of 20 to 200 parts by mass based on 100 parts by mass of the rubber component,

wherein

the resin has a weight-average molecular weight of from 300 to 15,000,

Hs being a rubber hardness and M300 being a tensile stress (MPa) at 300% elongation of the rubber composition of the tread satisfy Equations 1, 2, and 3:

60≤Hs≤80, Equation 1:

2≤M300≤12, and Equation 2:

(M300−2)/(Hs−60)≤0.75, and Equation 3:

the tire is configured as a motorcycle tire.