Pneumatic radial tire for a passenger vehicle and method of using the tire
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United States of America Patent
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Feb 5, 2019
Grant Date -
Jun 12, 2014
app pub date -
Jul 27, 2012
filing date -
Jul 28, 2011
priority date (Note) -
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Abstract
Provided is a pneumatic radial tire for a passenger vehicle, having a carcass constituted of plies as radially-disposed cords and toroidally provided across a pair of bead portions, and including: a belt constituted of one or more belt layers; and a tread, which are disposed in this order on the outside in the radial direction of the carcass, in which: a section width SW and an outer diameter OD of the tire have a ratio of SW/OD≤0.26 when SW<165 (mm), and SW and OD satisfy a relationship formula OD≥2.035×SW+282.3 when SW≥165 (mm); and provided that V1 represents a volume of rubber lying inside in the tire width direction than the both ends in the width direction of a maximum-width belt layer having a maximum width in the tire width direction among the belt layers while lying outside in the tire radial direction than the reinforcing member which is the outermost layer of the belt layers in the tire radial direction at the center position in the tire width direction, and that V2 represents a total volume of all the grooves formed in a surface of the tread, V1 and V2 has a ratio V2/V1≤20%.
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