Pneumatic tire

A pneumatic tire and tire technology, applied in tire parts, tire tread/tread pattern, transportation and packaging, etc., can solve the problems of reduced rigidity of the outer tread portion, reduced wear resistance and reduced handling stability, etc. Achieve the effect of improving wet performance, excellent wear resistance, and excellent handling stability

Active Publication Date: 2017-03-22
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, such inclined grooves reduce the rigidity of the outer tread portion, which in turn may reduce wear resistance and steering stability.
Therefore, the pneumatic tire of Patent Document 1 has room for further improvement in terms of wet performance, wear resistance, and steering stability.

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0062] Based on the specifications in Table 1, a trial production with figure 1 , Figure 5 as well as Figure 6 Either of the pneumatic tires with a basic tread pattern size of 205 / 55R16. As comparative example 1, a trial production was made Figure 7 tires shown. In the tire of Comparative Example 1, the distance from the tire equator to the first main groove was 0.78 times the width of the inner tread portion, and a slit connected to the outer tread edge Te2 was provided. As Comparative Example 2, a trial production with figure 1 A tire with a basic tread pattern in which the distance from the tire equator to the first main groove is 0.78 times the width of the inner tread portion. As Comparative Example 3, a trial production with figure 1 A tire in which the distance from the tire equator to the first main groove of the basic tread pattern is 0.15 times the width of the inner tread portion and the second main groove is provided on the tire equator. The wet road perf...

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Abstract

The present invention relates to a pneumatic tire capable of improving wet performance, uneven wear resistance and steering stability in cornering in good balance. An inboard portion (5) is provided with a circumferentially and continuously extending first main groove (11) which is arranged on the position 0.20-0.70 times of the width of the inboard portion (5) from the tire equator (C) along the axial direction of the tire. An outer outboard portion (6) is not provided with a plurality of slits, of which the groove edges do not connect with any of the tire equator (C) and an outboard tread edge (Te2), and a tire shoulder landing portion (24) which continuously extends along the circumferential direction of the outboard tread edge (Te2).

Description

technical field [0001] The present invention relates to a pneumatic tire in which wet performance, wear resistance, and handling stability are improved in a balanced manner. Background technique [0002] For example, Patent Document 1 below proposes a pneumatic tire that is used both for road travel and circuit travel. In order to ensure the wet road performance of the pneumatic tire when running on road, the outer tread portion between the tire equator and the outer tread end is provided with an inclined groove connected to the outer tread end or the tire equator. [0003] However, such inclined grooves reduce the rigidity of the outer tread portion, thereby possibly reducing wear resistance and steering stability. Therefore, the pneumatic tire of Patent Document 1 has room for further improvement in terms of wet performance, wear resistance, and steering stability. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2004-338628 Contents of the invention [0005]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/03B60C11/12
CPCB60C11/0304B60C11/033B60C11/1204B60C11/032B60C11/13B60C19/001
Inventor 中野敏幸中野敬太小高和真
Owner SUMITOMO RUBBER IND LTD
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