Honda PCX125 2011 Owner's Manual page 140

If you have a tire professionally replaced
at a non-Honda facility, we recommend
that you have the work checked by your
Honda dealer.
Important Safety Reminders
Do not install a tube inside a tubeless
tire on this scooter. Excessive heat
build-up can cause the tube to burst.
Use only tubeless tires on this scooter.
The rims are designed for tubeless tires,
and during hard acceleration or braking,
a tube-type tire could slip on the rim
and cause the tire to rapidly deflate.
Servicing Your Honda
Tires
133