Tire innerliner with improved resistance to air permeability

A tire comprising:

• an innerliner, where the innerliner is prepared from a vulcanizable composition including rubber and a filler component, where the filler component includes particles consisting essentially of boron nitride, carbon black, and optionally clay, the vulcanizable composition including at least 10 parts by weight of the filler component per 100 parts by weight rubber and less than 80 parts by weight of the filler component per 100 parts by weight rubber, and between 1 and 10 parts by weight particles consisting essentially of boron nitride per 100 parts by weight rubber, where the particles consisting essentially of boron nitride are characterized by the mean size of their largest dimension, where the mean size of their largest dimension is less than 25 μm, and where the innerliner has an air permeability of less than 16.8 as measured by a Mocon Diffusivity tester.