Volkswagen Golf GTI 2016 Owner's Manual page 592

Check tire inflation pressure regularly and on
cold tires. Check all the tires, including the
compact spare, if any. In colder climates tire
pressure should be checked more often, but
only when the tires are cold. Always use an
accurate tire pressure gauge.
After adjusting the tire inflation pressures,
make sure to screw the valve caps back on;
replace missing valve caps immediately.
Please read and heed the information on
resetting the Tire Pressure Monitoring System
→ Tire Pressure Monitoring System (TPMS) .
Remember that the vehicle manufacturer, not
the tire manufacturer, determines the correct
tire pressure for the tires on your vehicle.
Never exceed the maximum inflation pressure
listed on the tire sidewall for any reason.