Pneumatic tire having turbulence generating protrusions provided inside a groove

A pneumatic tire comprising turbulence generating protrusions on a tire surface, each of the turbulence generating protrusions having a sharp edge part, wherein the following relationships are satisfied:

• 0.5 mm<H≦5 mm;
• 0.03≦H/√R≦0.64;
• 1.0≦p/H≦50.0;
• 0.1≦H/e≦3.0;
• 1.0≦L/H≦50.0;
• and
• 1.5≦(p−w)/w≦100.0, where
• “R” is a tire radius being a distance from a rim center to an outermost position in a tread radial direction,
• “H” is a protrusion maximum height being a distance from the tire surface to a position at which each turbulence generating protrusion protrudes farthest from the tire surface,
• “p” is a protrusion circumferential-direction interval being an interval between the turbulence generating protrusions adjacent in a tire rotation direction,
• “e” is a protrusion radial-direction interval being an interval between the turbulence generating protrusions adjacent in a rotation orthogonal direction substantially orthogonal to the tire rotation direction,
• “L” is a protrusion radial-direction length being a maximum length of each turbulence generation protrusion in the rotation orthogonal direction, and
• “w” is a protrusion circumferential-direction length being a maximum length of each turbulence generation protrusion in the tire rotation direction,
• wherein the turbulence generating protrusions are provided inside a groove on the tire surface.