Pneumatic Tire

Abstract

A pneumatic tire is provided including a plurality of protrusions and a plurality of recesses of at least one tire side portion. A region including the recesses is provided in the outermost side in a tire radial direction. The protrusions are formed as convexities having a longitudinal shape in a predetermined direction. A region including the protrusions is provided inward in the tire radial direction of the region including the recesses.

What is claimed is: 
     
         1 . A pneumatic tire comprising a plurality of recesses and a plurality of protrusions of at least one tire side portion; wherein
 a region including the recesses is provided in an outermost side in a tire radial direction, the protrusions are formed as convexities having a longitudinal shape in a predetermined direction, and a region including the protrusions is formed inward in the tire radial direction of the region including the recesses.   
     
     
         2 . The pneumatic tire according to  claim 1 , wherein in a state when assembled on a regular rim and inflated to an inner pressure of 5% of a regular inner pressure, the region including the recesses is a range of at least 10% of a tire cross-sectional height outward from a ground contact edge of a tread portion in a tire width direction and inward from the ground contact edge in the tire radial direction; and the region including the protrusions is a range of at least 10% of the tire cross-sectional height outward from a rim check line in the tire radial direction. 
     
     
         3 . The pneumatic tire according to  claim 1 , wherein a longitudinal direction dimension of the protrusions is not less than 5 mm. 
     
     
         4 . The pneumatic tire according to  claim 1 , wherein a protruding height of the protrusions is not less than 0.5 mm and not more than 10.0 mm. 
     
     
         5 . The pneumatic tire according to  claim 1 , wherein a longitudinal direction of the protrusions is disposed along the tire radial direction. 
     
     
         6 . The pneumatic tire according to  claim 1 , wherein a cross-sectional shape of the protrusions comprises a peak and progressively expands toward a bottom surface side. 
     
     
         7 . The pneumatic tire according to  claim 1 , wherein a cross-sectional shape of the protrusions comprises at least one arc. 
     
     
         8 . The pneumatic tire according to  claim 1 , wherein a depth of the recesses is not less than 0.5 mm and not more than 5.0 mm. 
     
     
         9 . The pneumatic tire according to  claim 1 , wherein the recesses are disposed so that a volume progressively varies in the tire radial direction. 
     
     
         10 . The pneumatic tire according to  claim 1 , wherein the protrusions are formed such that a cross-sectional area varies so as to progressively decrease toward the outer side in the tire radial direction. 
     
     
         11 . The pneumatic tire according to  claim 1 , wherein when a range of at least 10% of a tire cross-sectional height outward from a ground contact edge of a tread portion in the tire width direction and inward in the tire radial direction from the ground contact edge is defined as DH, and another range of at least 10% of a tire cross-sectional height outward from a rim check line in the tire radial direction is defined as FH, and wherein maximum values of the regions FH and DH are respectively not more than 70% of the tire cross-sectional height. 
     
     
         12 . The pneumatic tire according to  claim 1 , wherein when a range of at least 10% of a tire cross-sectional height outward from a ground contact edge of a tread portion in the tire width direction and inward in the tire radial direction from the ground contact edge is defined as DH, and another range of at least 10% of a tire cross-sectional height outward from a rim check line in the tire radial direction is defined as FH, and wherein maximum values of the regions FH and DH are respectively not more than 50% of the tire cross-sectional height. 
     
     
         13 . The pneumatic tire according to  claim 1 , wherein in a state when assembled on a regular rim and inflated to an inner pressure of 5% of a regular inner pressure, the region including the recesses is a range of at least 10% of a tire cross-sectional height outward from a ground contact edge of a tread portion in a tire width direction and inward from the ground contact edge in the tire radial direction. 
     
     
         14 . The pneumatic tire according to  claim 1 , wherein in a state when assembled on a regular rim and inflated to an inner pressure of 5% of a regular inner pressure, and the region including the protrusions is a range of at least 10% of the tire cross-sectional height outward from a rim check line in the tire radial direction. 
     
     
         15 . The pneumatic tire according to  claim 1 , wherein a longitudinal direction of the protrusion is disposed along the tire radial direction, with a longitudinal direction dimension of the protrusions being not less than 5 mm and having a protruding height of not less than 0.5 mm and not more than 10.0 mm. 
     
     
         16 . The pneumatic tire according to  claim 1 , wherein the recesses are disposed so that a volume progressively varies in the tire radial direction and the protrusions are formed such that a cross-sectional area varies so as to progressively decrease toward the outer side in the tire radial direction.