CPC B60C 9/1821 (2013.01) [B60C 9/0064 (2013.01); B60C 9/20 (2013.01); B60C 11/0008 (2013.01); B60C 11/033 (2013.01); C08L 9/06 (2013.01); B60C 2001/0066 (2013.01); B60C 2009/2077 (2013.01); B60C 2009/2083 (2013.01); B60C 2011/0025 (2013.01); C08L 2205/03 (2013.01)] | 10 Claims |
1. A pneumatic tire having a tread portion and a belt layer, wherein
the tread portion is arranged on an outer side of the belt layer in a tire radial direction, the belt layer includes reinforcing cords comprising monofilaments in which 50 lines/5 cm or more of the monofilaments are arranged in a tire width direction in a tire radial cross section of the belt layer, and a maximum load capacity of the tire WL (kg) and a weight of the tire WT (kg) satisfy the following formula 2
0.015≤(WT/WL) formula 2
wherein the maximum load capacity is a value calculated using the following two formulas based on the tire cross-sectional width Wt (mm), the tire cross sectional height Ht (mm), the tire outer diameter Dt (mm), the volume of the space occupied by the tire V (virtual volume) and the rim diameter (Dt/2−Ht) in a state wherein the tire is assembled on a regular rim, has an internal pressure of 250 kPa and is in a no load state,
V (mm3)={(Dt/2)2−(Dt/2−Ht)2}×π×Wt and
WL(kg)=0.000011×V+100.
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