Honda CRF250L 2019 Owner's Manual page 52

Maintenance Fundamentals
#
Inspecting Tread Depth
Inspect the tread wear indicators. If they
become visible, replace the tyres immediately.
For safe riding, you should replace the tyres
when the minimum tread depth is reached.
Wear indicator
location mark
#
Inspecting Rims and Valve Stems
Inspect the rims for damage and loose spokes.
Also inspect the valve stems for their positions.
A tilted valve stem indicates the tube is slipping
inside the tyre or the tyre is slipping on the rim.
See your dealer.
48
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.