Thread wound golf ball

A thread wound golf ball comprising a solid center, a thread rubber layer formed on the solid center, and a cover covering the thread rubber layer, of which the cover has many dimples on the surface thereof, wherein

• the solid center has a diameter of 35 to 38 mm and a deformation amount of 0.78 to 1.36 mm when applying from an initial load of 9.8 N to a final load of 294 N,
• the thread rubber layer has a thickness of 1.0 to 2.5 mm,
• the cover has a Shore D hardness of 40 to 55, and
• a dimple volume rate RV (%) and the cover hardness (CD) in Shore D hardness satisfy a correlation represented by the following formula (1):
• 36≦(CD×RV)≦42 (1)
• wherein the dimple volume rate RV is represented by the following formula:
• RV(%)=VT/VG×100
• wherein VT (mm3) is a dimple total volume, which is the sum of a volume of a space defined by a concave of the dimple and a tangent plane passed through an opening of the dimple, and VG is a volume of the golf ball assuming that it is a true sphere having no dimples on the surface thereof.