Tire with chafer composition

A pneumatic tire having a pair of spaced apart, relatively inextensible bead components, and a connecting carcass between said bead components, a circumferential tread designed to be ground-contacting and where a rubber chafer component is positioned around at least a portion of each of said bead components and designed for contacting a rigid rim of a wheel and thereby interface between said tire bead component and said rim, an improvement characterized in that said chafer is composed of a polyphased composition comprised of (i) 100 parts by weight of at least one diene-based elastomer and (ii) about 5 to about 80 phr of a micro inclusion therein as a dispersion of particles within one or more of said elastomer(s) of at least one particulate, ultra high molecular weight, thermoplastic polymer having a molecular weight in a range of about one to about seven million and a softening point in a range of about 110° C. to about 180° C. and (iii) about 20 to about 100 phr of reinforcing fillers selected from carbon black, silica and carbon black and silica.