Importance

Loading Importance Indicators...

Abstract

Provided is a pneumatic tire for which rolling resistance at high speed running is sufficiently reduced and durability is sufficiently improved. The pneumatic tire has a side portion, a thickness S (mm) of a rubber layer radially outside a carcass on the side portion at the maximum tire width position is 3 mm or less, the loss tangent of the rubber layer measured under the conditions of 70° C., a frequency of 10 Hz, an initial distortion of 5%, and a dynamic distortion rate of 1% is 0.15 or less, and when the cross-sectional width of the tire is Wt (mm) and the outer diameter is Dt (mm) when installed on a regular rim and the internal pressure is 250 kPa, the volume of the space occupied by the tire is the virtual volume V (mm³), the following (formula 1) and (formula 2) are satisfied.

description='In-line Formulae' end='lead'1700≤(Dt²×π/4)/Wt≤2827.4  (formula 1)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'[(V+1.5×10⁷)/Wt]≤2.88×10⁵  (formula 2)description='In-line Formulae' end='tail'

Loading the Abstract Image...

First Claim