LOW NOISE LUG TYRE

PURPOSE:To effectively reduce a noise level which is inevitable to a lug type tread pattern under a high speed running conditon, by a method wherein the terminal areas of lateral grooves are aligned in combination of the directions of inclination at the terminal areas which extend contrariwise to each other in relation to a meridian. CONSTITUTION:Lateral grooves 3 are respectively formed in both sides of a tread part 1 along the meridian of a tyre, and lugs 4, aligned on the periphery of the tread part, are partitioned and formed by the lateral grooves 3. An open end 5 faces the side of the tread part of the lateral groove 3, and a terminal end 6 runs dead end into stopping short of a central periphery O-O. The area of the terminal end 6 is slanted toward the central peripheral surface O-O in any case, and the areas are aligned in the direction which repeats at intervals of every one lateral groove 3 in relation to the meridian crossing the central peripheral surface O-O at right angles and are aligned in combination of the oblique directions at the terminal areas which extend contrariwise to each other.