Pneumatic tire

Abstract

A pneumatic tire comprises shoulder land zones and middle land zones divided by shoulder main grooves and a crown main groove. The shoulder land zone is divided by shoulder lateral grooves into shoulder blocks. The middle land zone is formed as a circumferential rib in substance. The middle land zone is provided with first and second middle outward slots which extend from the shoulder main groove toward the axially inside beyond the widthwise center line of the middle land zone, while gradually decreasing the width and inclining with respect to the tire axial direction at an angle [theta]1 and an angle [theta]2 ([theta]2>[theta]1), respectively, and terminate within the middle land zone. The open ends of the first and second middle outward slots respectively face the open ends of the shoulder lateral grooves at the shoulder main groove.

Description

technical field [0001] The present invention relates to a pneumatic tire that balances mud performance and noise performance. Background technique [0002] For tires installed on four-wheel drive vehicles that not only drive on paved urban ground, but also on uneven ground such as muddy ground, on the one hand, the so-called mud performance that exerts sufficient driving force on muddy ground is required. On the one hand, excellent noise performance such as quietness is required when driving on paved roads in urban areas. [0003] Furthermore, the following Patent Document 1 proposes a tire capable of achieving both the above-mentioned mud performance and noise performance. [0004] Such as Figure 6 As an example, the proposed tire has a shoulder land portion rs and a middle land portion rm divided by the shoulder main groove gs and the crown main groove gc, and the shoulder land portion rs is divided by the shoulder lateral groove ys to form Columns of shoulder block bs....

AI Technical Summary

Problems solved by technology

[0006] However, this proposal only stops at the improvement of the shoulder land

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