Patent ID: 8439093

Claim:
A pneumatic tire with main grooves extending in the tire circumferential direction formed on a tread, wherein a plurality of oblong holes extending in the depth direction of each main groove are provided entirely within sidewalls on both sides of each main groove, only large-volume oblong holes are formed in one sidewall and are uniformly arranged and only small-volume oblong holes are formed in the other sidewall and are uniformly arranged, respectively, a width w 1 and a depth d 1 of the large-volume oblong hole are at least not less than 0.4 mm and more than 0.05 times but less than 0.25 times a width W of the main groove, a space p 1 between the large-volume oblong holes is at least not less than 0.8 mm and more than 0.2 times but less than 1.0 times the width W of the main groove, a width w 2 and a depth d 2 of the small-volume oblong hole are at least not less than 0.2 mm and more than 0.01 times but less than 0.05 times the width W of the main groove, and a space p 2 between the small-volume oblong holes is at least not less than 0.4 mm and more than 0.04 times but less than 0.2 times the width W of the main groove, and each height h of the large-volume oblong holes and the small-volume oblong holes in the depth direction of the main groove is 50 to 80% of a depth D of the main groove.