Pneumatic tyre

Abstract

The present invention provides a pneumatic tyre capable of evenly improving steering stability on a dry roadway and performance on snow. The pneumatic tyre (1) is provided with a pair of tyre shoulder main channels (3) and a center main channel (4) at a tyre surface part (2), so as to obtain a pair of tyre shoulder land parts (7) and a pair of center land parts (8). The ratio W1 / W2 of the width W1 of the tyre shoulder land part (7) and the width W2 of the center land part (8) is 1.2-1.6. The center land parts (8) are provided with a plurality of center shallow channels (12) which extend obliquely relative to the axial direction of the tyre from the tyre shoulder main channels (3) and form terminals in the center land parts (8). The tyre shoulder land parts (7) are provided with, at the side of the tyre shoulder main channels (3), tyre shoulder accessory channels (28) which have the channel width less than the channel width of the tyre shoulder main channels (3) and extend continuously along the circumferential direction of the tyre.

Description

technical field [0001] The present invention relates to a pneumatic tire that improves handling stability on dry roads and performance on snow. Background technique [0002] Patent Document 1 below proposes a pneumatic tire in which lateral grooves and sipes are provided in a center land portion and a shoulder land portion. In the above-mentioned tire, the lateral grooves and sipes exert edge effects, thereby exhibiting superior wet performance and snow performance. [0003] However, in the tire of Patent Document 1, the axial width of the center land portion is about half of that of the shoulder land portion. Therefore, in the tire of Patent Document 1, the center land portion tends to be easily strained, and the steering stability on dry roads tends to be low. [0004] In addition, in the tire of Patent Document 1, the edge components extending along the tire circumferential direction are only the center main groove and the bezel of the shoulder main groove, so the frict...

AI Technical Summary

Problems solved by technology

Therefore, in the tire of Patent Document 1, the center land portion tends to be easily strained, and the steering stability on dry roads tends to be low.

[0004] In addition, in the tire of Patent Document 1, the edge components extending along the tire circumferential direction are only the center main groove and the bezel of the shoulder main groove, so the frictional force in the tire axial direction on snow is small, and it is easy to ride on snow, for example. problem with horizontal scrolling

Images