Pneumatic tire for a motorcycle

A pneumatic tire for a motorcycle comprising:

• a carcass extending between a pair of bead cores,
• a tread reinforcing cord layer arranged on an outer side of the carcass in a tire radial direction, and
• a tread rubber arranged on the outer side of the tread reinforcing cord layer in the tire radial direction, the tread rubber forming a ground contacting surface including a crown ground contacting surface for contacting with the ground during straight running, and a pair of shoulder ground contacting surfaces for contacting with the ground during cornering, wherein
• the tread rubber comprises a base rubber layer and a pair of shoulder rubber layers,
• the base rubber layer comprises a cover portion covering at least the tread reinforcing cord layer over an entire width thereof and a convex portion protruding radially outwardly from the cover portion so as to form the crown ground contacting surface,
• the shoulder rubber layers are arranged on the radially outer side of the cover portion so as to form the shoulder ground contacting surfaces,
• the base rubber layer is made of a first rubber composition having larger hardness than the shoulder rubber layers, and
• the shoulder rubber layers are made of a second rubber composition containing larger amount of oil component than the base rubber layer.