Pneumatic tyre with a thermally adaptive underlayer

A method for manufacturing a pneumatic tyre comprising an underlayer which is a thermally adaptive rubber component, the method comprising:

• selecting a first elastomer having a first glass transition temperature and a second elastomer having a second glass transition temperature which have low miscibility towards each other, mixing the elastomers, reinforcing filler material, additive, and curing agents together mechanically such that a rubber composition comprising a polymer system is obtained, shaping the rubber composition into a rubber component for an underlayer of a pneumatic tyre,
• arranging the rubber component onto a green tyre such that the rubber component becomes positioned as an underlayer between a textile component and a tread layer, and such that an intermediate layer is positioned between the underlayer and the tread layer, and
• curing the green tyre,
• thereby obtaining the pneumatic tyre comprising an underlayer which is a thermally adaptive rubber component,
• wherein:
• the thermally adaptive rubber component contains the first elastomer in an amount in the range of 20 to 80 parts per hundred rubber and the second elastomer in an amount equal to or higher than 20 parts per hundred rubber,
• the first elastomer is solution-polymerized styrene-butadiene rubber,
• the second elastomer is natural rubber, and
• a difference between the first glass transition temperature and the second glass transition temperature is equal to or larger than 20° K,
• the glass transition temperature referring to a derivative signal determinable by differential scanning calorimetry under nitrogen atmosphere, in a temperature range of 123° K to 373° K, at a linear rate of 10° K/min in accordance with ASTM D7426-08.