Patent ID: 9004126
Filing Date: 2015-04-14
Classification: B60C,Y10S

Abstract:
1. A pneumatic tire comprising: a first side side-section arranged on an outward side when the tire is mounted to a vehicle, a second side side-section arranged on an inward side when the tire is mounted to a vehicle, and a tread section, the tread section comprising: Wmax is a maximum groove width among the center main grooves and the inside main groove and Wout is a groove width of the outside main groove, such that a ratio Wmax/Wout is at least 1.5 and not larger than 2.5; a groove area ratio Sin of a region of a ground contact surface located on the second side of the tire centerline and a groove area ratio Sout of a region of the ground contact surface located on the first side of the tire centerline are set such that a ratio Sin/Sout is at least 1.10 and smaller than 1.25, and a groove area ratio of the entire ground contact surface is at least 23% and not larger than 33%; the land sections include an inside intermediate land section demarcated by the inside main groove and the center main groove positioned on the second side of the tire centerline and an outside intermediate land section demarcated by the outside main groove and the center main groove positioned on the first side of the tire centerline, each of the inside and outside intermediate land sections being provided with a plurality of slanted grooves or sipes, such that a groove area ratio of a region on the second side of a first centerline dividing the inside intermediate land section in the widthwise direction of the tire is higher than a groove area ratio of a region on the first side of the first centerline, and a groove area ratio of a region on the second side of a second centerline dividing the outside intermediate land section in the widthwise direction of the tire is higher than a groove area ratio of a region on the first side of the second centerline; and the inside shoulder lug groove has a terminal end that is closed such that the inside shoulder lug groove does not communicate with the inside main groove, and the outside shoulder lug groove has a terminal end that is closed such that the outside shoulder lug groove does not communicate with the outside main groove and wherein sipes are provided on a first side edge of the inside intermediate land section facing toward the first side and sipes are not provided on a second side edge of the inside intermediate land section facing toward the second side.