tire

Abstract

To provide a tire with improved handling stability at high speeds. [Solution] A tire having a carcass and a tread, wherein the tread has one or more circumferential grooves, the tread is composed of a rubber composition containing a rubber component, a filler and a resin component, the rubber component contains isoprene rubber and styrene-butadiene rubber, the isoprene rubber content in the rubber component is 40% by mass or more, the filler contains silica, the rubber composition contains 100 parts by mass or more of silica and 50 parts by mass or more of resin component per 100 parts by mass of rubber component, and when the distance from the outermost part of the tire radially in the carcass to the deepest part of the circumferential groove of the tread is L (mm), the amount of acetone extracted from the rubber composition is AE (mass%), and the total content of filler in the rubber composition per 100 parts by mass of rubber component is F (parts by mass), the tire has a value of (F × AE) / L greater than 170.

Claims

1. A tire having a carcass and a tread, The tread has one or more circumferential grooves, The tread is composed of a rubber composition containing rubber components, fillers, and resin components. The aforementioned rubber component contains isoprene-based rubber and styrene-butadiene rubber. The isoprene-based rubber content in the aforementioned rubber component is 40% by mass or more. The filler contains silica, The rubber composition contains 100 parts by mass or more of silica and 50 parts by mass or more of resin components per 100 parts by mass of the rubber component. When L (mm) is the distance from the outermost radial part of the carcass to the deepest part of the circumferential groove of the tread, AE (mass%) is the amount of acetone extracted from the rubber composition, and F (parts by mass) is the total content of filler in the rubber composition relative to 100 parts by mass of the rubber component, Tires where (F x AE) / L exceeds 170.

2. The tire according to claim 1, wherein the rubber composition contains 130 parts by mass or more of silica per 100 parts by mass of the rubber component.

3. The tire according to claim 1 or 2, wherein the content of styrene-butadiene rubber in the rubber component is more than 40% by mass.

4. The CTAB specific surface area C of the aforementioned silica is 190 m². 2 A tire according to claim 1 or 2, wherein the weight is 1 / g or more.

5. The tire according to claim 1 or 2, wherein the styrene content of the styrene-butadiene rubber is 20% by mass or more.

6. The tire according to claim 1 or 2, wherein the AE (mass%) is 25.0 or more.

7. The tire according to claim 1 or 2, wherein the resin component contains at least one selected from the group consisting of C9 resins, dicyclopentadiene resins, and terpene resins.

8. The tire according to claim 1 or 2, wherein the rubber composition further contains a mercapto-silane coupling agent.

9. The tire according to claim 1 or 2, wherein the resin component contains a liquid resin.

10. The tire according to claim 1 or 2, wherein the rubber composition contains liquid rubber.

11. The tire according to claim 1 or 2, wherein the rubber composition contains vegetable oil.

12. The tire according to claim 1 or 2, wherein F × AE is greater than 3500 for F and AE.

13. The tire according to claim 1 or 2, wherein L / AE is greater than 0.30 for L and AE.

14. The CTAB specific surface area of ​​the silica is C(m 2 If you use / g, A tire according to claim 1 or 2, wherein the C / L ratio is greater than 20.

15. The maximum load capacity of the aforementioned tire is W L (kg), if the weight of the tire is G (kg), then G / W L The tire according to claim 1 or 2, wherein the coefficient is 0.0170 or less.

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