Honda SH300 Owner's Manual page 56

Important safety reminders
• Do not install a tube inside a tubeless tyre
on this scooter. Excessive heat build-up
can cause the tube to burst.
• Use only tubeless tyres on this scooter.
The rims are designed for tubeless tyres
and during hard acceleration or braking a
tube-type tyre could slip on the rim and
cause the tyre to rapidly deflate.
44