Tire vulcanization mold and manufacturing method for tire

A method of manufacturing a tire, comprising:

• vulcanizing a green tire by using a tire vulcanization mold, comprising:
• a tread molding surface comprising a groove molding portion and a land portion molding portion,
• a surface roughness Ra in the groove molding portion being smaller than a surface roughness Ra in the land portion molding portion, the groove molding portion comprising a surface treated by a surface treatment configured to decrease the surface roughness Ra of the groove molding portion relative to the surface roughness Ra in the land portion molding portion,
• in the groove molding portion, the surface roughness Ra being smallest at 0.12 μm or less in a range comprising at least a main groove molding portion, and
• the surface roughness Ra in the land portion molding portion being 3.2 μm or more;
• wherein
• when cleaning the tread molding surface, the tread molding surface is irradiated with a laser beam to remove a contaminant adhering to the tread molding surface, the laser beam is a Yb-YAG (Ytterbium-doped Yttrium Aluminum Garnet) laser beam having a wavelength of 1030 nm or an Nd-YAG (Neodymium-doped Yttrium Aluminum Garnet) laser beam having a wavelength of 1064 nm,
• a light source output of the laser beam is 1 W or more and 5 kW or less,
• a pulse width of the laser beam is 1 ns or more and 500 ns or less,
• a pulse energy of the laser beam is 1 mJ or more and 0.1 J or less,
• a pulse frequency of the laser beam is 1 kHz or more and 100 kHz or less,
• a fluence of the laser beam is 0.5 J/m2 and 4.0 J/m2 or less, and
• a beam diameter of the laser beam is 0.1 mm or more and 3 mm or less.