Tire and method for manufacturing tire
AssigneeBridgestone Corporation
InventorsSeiichi TAHARA, Shinichi MUSHA, Tomohiro URATA, Tatsuya NOMOTO
Life of this patent
Estimating the term…
Loading patent…
AssigneeBridgestone Corporation
InventorsSeiichi TAHARA, Shinichi MUSHA, Tomohiro URATA, Tatsuya NOMOTO
Estimating the term…
Provided is a tire on which cracks on sidewall portion outer surfaces are unlikely to progress. The tire comprises a depthwise structure on at least a part of a sidewall portion, the depthwise structure comprising, in a depth direction from a point on a sidewall portion outer surface, a depthwise part from the sidewall portion outer surface to 0.5 mm and a depthwise part II from 0.5 mm to 1.0 mm, wherein: the depthwise part I and the depthwise part II satisfy: the depthwise part I: peak temperature T1 of tan δ is −20° C. or more and −5° C. or less, and when tang at the peak temperature T1 is α1 and storage modulus at the peak temperature T1 is E′1, α1≤0.90 and E′1≥5 MPa; and the depthwise part II: when tan δ at peak temperature T1 is α2, and storage modulus at peak temperature T1 is E′2, α2<α1 and E′2<E′1.
A tire comprising a depthwise structure on at least a part of a sidewall portion, the depthwise structure comprising, in a depth direction from a point on a sidewall portion outer surface, a depthwise part I from the sidewall portion outer surface to 0.5 mm and a depthwise part II from 0.5 mm to 1.0 mm, wherein:
Dependencies are inferred from the claim text.