tire size YAMAHA YZ85 2018 Owners Manual

Safety information
2-4
2tempt to lift the motorcycle, or
the motorcycle may become
unstable in cross winds.
• Certain accessories can dis- place the operator from his or
her normal riding position. This
improper position limits the
freedom of movement of the
operator and may limit control
ability, therefore, such accesso-
ries are not recommended.
 Use caution when adding electri-
cal accessories. If electrical ac-
cessories exceed the capacity of
the motorcycle’s electrical sys-
tem, an electric failure could re-
sult, which could cause a
dangerous loss of lights or engine
power.
Aftermarket Tires an d Rims
The tires and rims that came with your
motorcycle were designed to match
the performance capabilities and to
provide the best combination of han-
dling, braking, and comfort. Other
tires, rims, sizes, and combinations
may not be appropriate. Refer to page
7-14 for tire specifications and more in-
formation on replacing your tires.
Transportin g the Motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle.  Remove all loose items from the
motorcycle.
 Check that the fuel cock (if
equipped) is in the “OFF” position
and that there are no fuel leaks. 
Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to pre-
vent movement.
 Shift the transmission in gear (for
models with a manual transmis-
sion).
 Secure the motorcycle with tie-
downs or suitable straps that are
attached to solid parts of the mo-
torcycle, such as the frame or up-
per front fork triple clamp (and not,
for example, to rubber-mounted
handlebars or turn signals, or
parts that could break). Choose
the location for the straps carefully
so the straps will not rub against
painted surfaces during transport.
 The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the mo-
torcycle will not bounce exces-
sively during transport.
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Periodic maintenance an d a djustment
7-15
7 Tire inspection
The tires must be checked before each
ride.
NOTICE
ECA15581

Be sure the bead stoppers are
ti g htene d. Loose bead stoppers
will cause the tire to slip off the
rim if tire pressure is too low.
 Be sure the valve stem is posi-
tione d strai ght. A tilte d valve
stem in dicates that the tire has
slippe d from its ori ginal position
on the rim. Rotate the tire so
that the valve stem is positione d
strai ght.
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.
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
rubber, sometimes accompanied by
carcass deformation, is an evidence of
ageing. Old and aged tires shall be
checked by tire specialists to ascertain
their suitability for further use.
WARNING
EWA10462
The front an
d rear tires shoul d b e of
the same make an d d esi gn, other-
wise the han dlin g characteristics of
the vehicle may be different, which
coul d lea d to an acci dent.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha.
WARNING
EWA14391
 Have a Yamaha dealer replace
excessively worn tires. Operat-
in g the motorcycle with exces-
sively worn tires decreases
ri din g sta bility an d can lea d to
loss of control.
1. Tire sidewall
2. Tire tread depth
Minimum tire trea d d epth (front an d
rear):
4.0 mm (0.16 in)
1
2
Front tire:Size:
70/100-17 40M (YZ85, YZ85J)
70/100-19 42M (YZ85LW,
YZ85LWJ)
Manufacturer/model: DUNLOP/MX51F
Rear tire:
Size:90/100-14 49M (YZ85, YZ85J)
90/100-16 52M (YZ85LW,
YZ85LWJ)
Manufacturer/model: DUNLOP/MX51
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Specifications
9-2
9
Caster angle:26.0 ° (YZ85LW, YZ85LWJ)
26.3 ° (YZ85, YZ85J)
Trail: 88 mm (3.5 in) (YZ85, YZ85J)
99 mm (3.9 in) (YZ85LW, YZ85LWJ)
Front tire:
Type:With tube
Size:
70/100-17 40M (YZ85, YZ85J)
70/100-19 42M (YZ85LW, YZ85LWJ)
Manufacturer/model:
DUNLOP/MX51F
Rear tire:
Type: With tube
Size: 90/100-14 49M (YZ85, YZ85J)
90/100-16 52M (YZ85LW, YZ85LWJ)
Manufacturer/model: DUNLOP/MX51
Tire air pressure (measure d on col d
tires):
Front:
100 kPa (1.00 kgf/cm², 15 psi)
Rear:
100 kPa (1.00 kgf/cm², 15 psi)
Front wheel:
Wheel type:Spoke wheel
Rim size:
17 x 1.40 (YZ85, YZ85J)
19 x 1.40 (YZ85LW, YZ85LWJ)
Rear wheel:
Wheel type:Spoke wheel
Rim size: 14 x 1.60 (YZ85, YZ85J)
16 x 1.85 (YZ85LW, YZ85LWJ)
Front brake:
Type:
Hydraulic single disc brake
Specified brake fluid: DOT 4
Rear brake:
Type:
Hydraulic single disc brake
Specified brake fluid: DOT 4
Front suspension:
Type:Telescopic fork
Spring:
Coil spring
Shock absorber: Hydraulic damper
Wheel travel: 275 mm (10.8 in)
Rear suspension:
Type:Swingarm (link suspension)
Spring: Coil spring
Shock absorber: Gas-hydraulic damper
Wheel travel:
282 mm (11.1 in) (YZ85, YZ85J)
287 mm (11.3 in) (YZ85LW, YZ85LWJ)
Electrical system:
Ignition system:CDI
Charging system: CDI magneto
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