Patent ID: 8381782
Filing Date: 2013-02-26
Classification: B60C,Y10S

Abstract:
1. A heavy duty pneumatic tire comprising: a tread portion provided with tread grooves including at least five longitudinal grooves including a central longitudinal groove extending in a zigzag manner, intersecting a tire equator, two outer longitudinal grooves disposed one on each side of the central longitudinal groove, and two intermediate longitudinal grooves disposed one between each said outer longitudinal groove and the central longitudinal groove, and central lateral grooves extending between the central longitudinal groove and the intermediate longitudinal grooves, intermediate lateral grooves extending between the intermediate longitudinal grooves and the outer longitudinal grooves, and outer lateral grooves extending from the outer longitudinal grooves the total length EC the total length EL the total length EC the total length EL the total length EC the total length EL satisfy the following six equations: