Tires sizes for VESPA GTV 300 Sei Giorni 2018

120/70-12
FRONT
~26 PSI
130/70-12
REAR
~37 PSI

What are the tires sizes for VESPA GTV 300 Sei Giorni 2018?

The front tire is is 120/70-12, and the rear tire size is 130/70-12

What are the tires pressure for VESPA GTV 300 Sei Giorni 2018?

The front tire pressure is about 26 PSI (~1.79 BAR), and the rear tire pressure is about 37 PSI (~2.55 BAR)

For accurate numbers you should always consult with your bike user manual's, your local dealer or the manufacturer