HEAVY DUTY PNEUMATIC RADIAL TIRES

摘要

The uneven wear produced in a tread side rib in a heavy duty pneumatic radial tire (11) is prevented or reduced by arranging a peripheral fine groove (18) in a particular region of the side face (12b) of the tread portion (12) in a particular form. The fine groove has an opening (18a) of width corresponding to 5-75% of the width of a main groove (16) of the tread, and extends inward from a position (A) to a position defined by certain axial and radial distances (B,C).