tire
The tire design with circumferential grooves and land portions with specific sipes enhances rolling resistance and wear resistance while maintaining wet performance by improving drainage and rigidity.
JP2026107240APending Publication Date: 2026-06-30SUMITOMO RUBBER INDUSTRIES LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SUMITOMO RUBBER INDUSTRIES LTD
- Filing Date
- 2024-12-18
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
Existing tires face a challenge in balancing the need for improved rolling resistance and wear resistance while maintaining wet performance, as increasing rigidity to enhance these properties often compromises wet performance.
Method used
A tire design featuring circumferential grooves and land portions with outer and inner sipes, including a first inner sipe with a widened portion and a second inner sipe without a widened portion, to enhance drainage and maintain rigidity.
Benefits of technology
The design improves rolling resistance and wear resistance while maintaining wet performance by effectively scraping water from the road surface and guiding it into grooves for discharge.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026107240000001_ABST
Abstract
To provide a tire that can improve rolling resistance and wear resistance while maintaining wet performance. [Solution] The tire 1 has a plurality of circumferential grooves 3 and a plurality of land sections 4. The plurality of land sections 4 include an outer land section 4A located on the outermost side in the tire axial direction and an inner land section 4B located inward in the tire axial direction from the outer land section 4A. The outer land section 4A has a plurality of outer sipes 5 that cross the outer land section 4A. The inner land section 4B has a plurality of inner sipes 6 that cross the inner land section 4B. The inner sipes 6 include a first inner sipe 6A and a second inner sipe 6B. The first inner sipe 6A has a widened portion 8 on the inside of the sipe body 7 in the tire radial direction. The second inner sipe 6B does not have a widened portion 8 on the inside of the sipe body 7 in the tire radial direction.
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