Tire with rubber tread of intermedial and lateral zones with periperial sidewall extensions

A tire having a circumferential rubber tread composed of a cap/base configuration comprised of an outer tread cap rubber layer with a lug and groove configuration with the outer portions of the tread lugs providing the running surface of the tread, and a tread base rubber layer underlying the outer tread cap rubber layer;

• wherein the outer tread cap rubber layer is composed of three circumferential load bearing zones comprised of an intermedial tread zone rubber layer positioned between and extending beneath two individual stratified lateral tread zone rubber layers to thereby underlie the lateral tread zone rubber layers and overlay the tread base rubber layer;
• wherein the lateral tread zone layers are spaced apart from each other and at least partially spaced apart from the tread base rubber layer with the intermedial tread zone therebetween,
• wherein outer tread lug surfaces of the intermedial tread zone rubber layer and the lateral tread zone rubber layers comprise the running surface of the tread;
• wherein a peripheral rubber layer of the tread is provided as a radial extension of a tire sidewall which extends to and joins said tread base rubber layer and lateral tread rubber zone which contains at least 40 phr of rubber reinforcing carbon black,
• wherein rubber composition of the intermedial tread zone rubber layer has a 100° C. hot rebound property greater than the 100° C. hot rebound property of the rubber composition of the lateral tread rubber layers;
• wherein, for filler reinforcement of the rubber compositions of the intermedial tread zone, stratified lateral tread zones and tread base rubber zone;
• (A) the rubber composition of the tread base rubber zone contains about 40 to about 60 phr of reinforcing filler comprised of rubber reinforcing carbon black, and
• (B) the rubber compositions of the intermedial and stratified lateral tread zones contain from about 40 to about 100 phr of reinforcing filler wherein:
• (1) the filler reinforcement for said lateral and intermedial tread zones is comprised of rubber reinforcing carbon black, or
• (2) the filler reinforcement of said intermedial tread zone is comprised of rubber reinforcing carbon black and the filler reinforcement for said lateral tread zones is a combination of rubber reinforcing carbon black and precipitated silica comprised of:
• (a) at least 30 phr of rubber reinforcing carbon black, or
• (b) up to about 25 phr of rubber reinforcing carbon black, or
• (3) the filler reinforcement of said lateral tread zones is comprised of rubber reinforcing carbon black and the filler reinforcement for said intermedial tread zone is a combination of rubber reinforcing carbon black and precipitated silica comprised of:
• (a) at least 30 phr of rubber reinforcing carbon black, or
• (b) up to about 25 phr of rubber reinforcing carbon black, or
• (4) the filler reinforcement of both of said lateral tread zones and intermedial tread zone is comprised of a combination of rubber reinforcing carbon black and precipitated silica comprised of:
• (a) at least 30 phr of rubber reinforcing carbon black, or
• (b) up to about 25 phr of rubber reinforcing carbon black.