Honda CB500F 2019 Manual page 76

Maintenance Fundamentals
#
Inspecting for Abnormal Wear
Inspect the tires for
signs of abnormal wear
on the contact surface.
#
Inspecting Tread Depth
Inspect the tread wear indicators. If they
become visible, replace the tires immediately.
For safe riding, you should replace the tires
when the minimum tread depth is reached.
or TWI
Wear indicator
location mark
74
WARNING
3
Riding on tires 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 tire inflation and
maintenance.