Patent ID: 8091598
Filing Date: 2012-01-10
Classification: B60C,Y02T,Y10S

Abstract:
1. A motorcycle tire whose tread portion has a tread face extending from the tire equator to a tread edge while curving in a convex arc-like manner, wherein: within a ground contacting region during straight running where the tread face comes into contact with the ground during straight running, said tire is provided with a central circumferential main groove extending on the tire equator continuously in the circumferential direction in a linear fashion or in a zigzag manner, and a pair of central circumferential sub grooves extending continuously in the circumferential direction in parallel with the central circumferential main groove passing through on both sides of the central circumferential main groove; said ground contacting region during straight running is provided with no grooves but said central circumferential main groove and the central circumferential sub grooves, and thereby land portions between said central circumferential main groove and central circumferential sub grooves are formed as ribs continuous in the tire circumferential direction; said tread face is provided in its region axial outside said ground contacting region during straight running with no circumferential groove extending continuously in the tire circumferential direction but oblique lateral grooves having a major part extending at an angle of from 30 to 80 degrees with respect to the circumferential direction; a groove width Wg a distance L