PNEUMATIC TIRE

A pneumatic tire that can greatly improve the steering stability on dry and wet road surfaces without worsening of the rolling resistance. A rubber composition used in a tread of the pneumatic tire includes a rubber component (A) including 50 mass % or more of isoprene-based rubber, a specific amoun...

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Bibliographic Details
Main Authors HASHIMOTO, Kento, SAKURAI, Hideyuki
Format Patent
LanguageEnglish
Published 06.06.2019
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DEVICES OR ARRANGEMENTS RELATED TO TYRES
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
TYRE CHANGING OR REPAIRING
TYRE INFLATION
VEHICLE TYRES
VEHICLES IN GENERAL
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Summary:A pneumatic tire that can greatly improve the steering stability on dry and wet road surfaces without worsening of the rolling resistance. A rubber composition used in a tread of the pneumatic tire includes a rubber component (A) including 50 mass % or more of isoprene-based rubber, a specific amount of a thermoplastic resin (B), and a filler (C) including 70 mass % or more of silica. In the rubber composition, tan δ at 0° C. is 0.5 or less, the difference between tan δ at 30° C. and tan δ at 60° C. is 0.070 or less, and the storage modulus at a dynamic strain of 1% and 0° C. is 20 MPa or less. In the pneumatic tire, a tread edge component ratio defined as (sum of tire widthwise extending length of lug grooves and tire widthwise extending length of widthwise sipes on the tread surface)/(tire circumferential length) is 6.0 to 8.0.
Bibliography:Application Number: US201716302990