Patent ID: 9623707
Date: 2017-04-18
CPC Classifications: B60C

Claim:
1. A tire comprising a tread comprising: a plurality of circumferential grooves separating circumferential ribs, each groove comprising a bottom and two sidewalls; one or more groove reinforcements, each groove reinforcement laterally spaced from any other of said one or more groove reinforcements; wherein each groove reinforcement is arranged adjacent one circumferential groove; wherein at least one circumferential groove has no groove reinforcement adjacent to it; and wherein each groove reinforcement extends from the radially inner surface of the tread in a radially outward direction at least to the bottom of the adjacent circumferential groove to form at least part of the bottom of that groove; wherein the groove reinforcement consists of a rubber composition, the rubber composition comprising: between about 50 phr and 120 phr of a filler, wherein at least 20 phr of the filler is a high surface area carbon black having an iodine adsorption number of at least 100 g/kg; and between 10 phr and 30 phr of a phenolic resin.