Yamaha YZ85M 2021 Owner's Manual page 54

Periodic maintenance and adjustment
Tire inspection
1. Tire sidewall
2. Tire tread depth
The tires must be checked before each
ride.
NOTICE
 Make sure the bead stopper is
tightened. A loose bead stopper
will cause the tire to slip off the
rim if tire pressure is too low.
 Make sure the valve stem is po-
7
sitioned straight. A tilted valve
stem indicates that the tire has
slipped from its original position
on the rim. Rotate the tire so
that the valve stem is positioned
straight.
If the center tread depth reaches the
specified limit, if the tire has a nail or
glass fragments in it, or if the sidewall
is cracked, have a Yamaha dealer re-
place the tire immediately.
Minimum tire tread depth (front and
rear):
4.0 mm (0.16 in)
Tire information
This model is equipped with tube tires.
Tires age, even if they have not been
used or have only been used occasion-
ally. Cracking of the tread and sidewall
2
rubber, sometimes accompanied by
carcass deformation, is an evidence of
ageing. Old and aged tires shall be
checked by tire specialists to ascertain
1
their suitability for further use.
The front and rear tires should be of
the same make and design, other-
wise the handling characteristics of
the vehicle may be different, which
could lead to an accident.
ECA15582
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha.
 Have a Yamaha dealer replace
 The replacement of all wheel-
7-15
WARNING
Front tire:
Size:
70/100-17 40M
Manufacturer/model:
DUNLOP/MX3SF
Rear tire:
Size:
90/100-14 49M
Manufacturer/model:
DUNLOP/MX3S
WARNING
excessively worn tires. Operat-
ing the motorcycle with exces-
sively worn tires decreases
riding stability and can lead to
loss of control.
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience.
EWA10462
EWA14391