| 摘要 |
PURPOSE:To prevent unbalanced abrasion of a tread part by arranging, on a tread of blocks divided by means of grooves provided at least on both sides of the tread part, the plural number of straight kerfs, independent of said grooves, at a predetermined angle with the circumferential direction of a tire. CONSTITUTION:The tread part 10 of a radial tire G is provided with many blocks 20 divided by means of each groove 11 in the circumferential direction and the meridian direction of the tire. The plural number of straight kerfs 21 are arranged in parallel with each other at an angle of 80 deg.-90 deg. with the circumferential direction of the tire independently of said grooves 11, on the tread of each block 20 of both sides of the tread part 10, that is, shoulder parts 10s. At this time, an interval (t) for arranging the straight kerfs 21 is preferably set within 3mm.-10mm. while the bradth (s) of each kerf 21 is preferably set within 0.6mm.-1.2mm.. Thus, unbalanced abrasion of the tread part 10 can be prevented and not only draining of the tire but also stability of traveling on the damp road can be improved. |
