Honda CRF150F 2002 Manual Del Propietário página 136

Tread Wear
Replace tyres before tread depth at the center
of the tyre reaches the following limit:
Minimum tread depth
Front
Rear
3.0 mm (0.12 in)
3.0 mm (0.12 in)
(1)
(1) Tyre tread depth
25