 The HTR Z III (High
Technology Radials-3rd generation) is Sumitomo's Max
Performance Summer tire developed for sports cars,
sporty coupes and high performance sedans. It is
designed to showcase Sumitomo's technical resources
by providing high-speed handling stability along
with traction on dry and wet roads. Like all summer
tires, it is not intended to be driven in
near-freezing temperatures, through snow or on ice.
The Sumitomo HTR Z III features a silica-enhanced
tread compound molded into a sophisticated, 5-rib,
asymmetric tread design. Large outboard shoulder and
intermediate tread blocks along with continuous
center and inboard intermediate ribs provide
responsive handling, high-speed stability and dry
road traction. The inside shoulder is linked by
another continuous circumferential rib that enhances
wear quality to help reduce noise throughout the
life of the tire, especially on vehicles with
independent suspensions and alignment settings that
specify negative camber. Straight and wide
circumferential grooves along with long, sweeping
lateral grooves pump water from under the tire’s
footprint to increase hydroplaning resistance and
wet traction.
The Sumitomo HTR Z III radial features a
high-rigidity construction consisting of wide steel
belts reinforced by spirally wrapped polyamide that
stabilize the tread area to enhance handling and
high-speed capability. Its polyester cord body and
hard rubber sidewall fillers help blend uniform ride
quality with steering response and lateral
stability.
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