Honda Monkey 2021 Owner's Manual page 60

Maintenance Fundamentals
Inspecting Tread Depth
#
Inspect the tread wear indicators. If they become
visible, replace the tyres immediately.
or TWI
Wear indicator
location mark
56
WARNING
3
Riding on tyres that are excessively worn
or improperly inflated can cause a crash
in which you can be seriously hurt or
killed.
Follow all instructions in this owner's
manual regarding tyre inflation and
maintenance.