2012 YAMAHA YZF-R1 tire size

INSTRUMENT AND CONTROL FUNCTIONS
3-22
3
EAU51861
Traction control system The traction control system helps main-
tain traction when accelerating. If sen-
sors detect that the rear wheel is
starting to slip (uncontrolled spinning),
the traction control system assists by
regulating engine power as needed un-
til traction is restored. The traction con-
trol system indicator/warning light
flashes to let the rider know that traction
control has engaged.
WARNING
EWA15431
The traction control system is not a
substitute for riding appropriately
for the conditions. Traction control
cannot prevent loss of traction due
to excessive speed when entering
turns, when accelerating hard at a
sharp lean angle, or while braking,
and cannot prevent front wheel slip-
ping. As with any motorcycle, ap-
proach surfaces that may be
slippery with caution and avoid es-
pecially slippery surfaces.
TIP●
The traction control may engage
when the vehicle travels over a
bump.
●
The rider may notice slight chang-
es in engine and exhaust sounds
when the traction control system is
engaged.
There are six traction control system
modes and an off mode.●
“TCS” mode 1 provides for the
least traction control system as-
sist.
●
“TCS” modes 2 through 6 provide
for more traction control system
assist. Mode 6 provides the most
traction control system assist.
●
“TCS OFF” mode turns the traction
control system off. The system
may also be automatically dis-
abled in some riding conditions
(see “Resetting” on page 3-23).
When the key is turned to “ON”, the
traction control system is enabled and
the last mode selected displays in the
multi-function meter.
All traction control system modes can
be selected when the key is in the “ON”
position. Modes 1 through 6 can also
be selected when the vehicle is moving,
however the throttle grip must be com-
pletely closed. The traction control sys-
tem cannot be turned on or off while the
vehicle is moving.
NOTICE
ECA16800
Use only the specified tires. (See
page 6-18.) Using different sized
tires will prevent the traction control
system from controlling tire rotation
accurately.
OFF Display
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
TCS
OFF
TCSTCSTCSTCSTCSTCS
U1KBE0E0.book Page 22 Monday, July 25, 2011 5:03 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-20
6
Tire information
This motorcycle is equipped with tube-
less tires, tire air valves and cast
wheels.
WARNING
EWA10481
●
The front and rear tires should
be of the same make and de-
sign, otherwise the handling
characteristics of the motorcy-
cle may be different, which
could lead to an accident.
●
Always make sure that the valve
caps are securely installed to
prevent air pressure leakage.
●
Use only the tire valves and
valve cores listed below to
avoid tire deflation during a
high-speed ride.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha Motor Co., Ltd.
WARNING
EWA10600
This motorcycle is fitted with super-
high-speed tires. Note the following
points in order to make the most ef-
ficient use of these tires.●
Use only the specified replace-
ment tires. Other tires may run
the danger of bursting at super
high speeds.
●
Brand-new tires can have a rela-
tively poor grip on certain road
surfaces until they have been
“broken in”. Therefore, it is ad-
visable before doing any high-
speed riding to ride conserva-
tively for approximately 100 km
(60 mi) after installing a new tire.
●
The tires must be warmed up
before a high-speed run.
●
Always adjust the tire air pres-
sure according to the operating
conditions.
1. Tire air valve
2. Tire air valve core
3. Tire air valve cap with seal
Front tire:
Size:120/70 ZR17M/C (58W)
Manufacturer/model: MICHELIN/POWER PURE A
DUNLOP/Qualifier II
Rear tire: Size:190/55 ZR17M/C (75W)
Manufacturer/model: MICHELIN/POWER PURE
DUNLOP/Qualifier II
FRONT and REAR: Tire air valve:TR412
Va l ve c o r e : #9100 (original)
U1KBE0E0.book Page 20 Monday, July 25, 2011 5:03 PM

SPECIFICATIONS
8-2
8
2nd:2.063 (33/16)
3rd: 1.762 (37/21)
4th:
1.522 (35/23)
5th: 1.364 (30/22)
6th: 1.269 (33/26)
Chassis:Frame type:Diamond
Caster angle: 24.00 °
Trail:
102 mm (4.0 in)Front tire:Type:Tubeless
Size:
120/70 ZR17M/C (58W)
Manufacturer/model: MICHELIN/POWER PURE A
Manufacturer/model: DUNLOP/Qualifier IIRear tire:Type:Tubeless
Size: 190/55 ZR17M/C (75W)
Manufacturer/model:
MICHELIN/POWER PURE Manufacturer/model:
DUNLOP/Qualifier II
Loading:Maximum load:
189 kg (417 lb)
(Total weight of rider, passenger, cargo and
accessories)Tire air pressure (measured on cold
tires):Loading condition:0–90 kg (0–198 lb)
Front: 250 kPa (2.50 kgf/cm², 36 psi)
Rear:
290 kPa (2.90 kgf/cm², 42 psi)
Loading condition: 90–189 kg (198–417 lb)
Front: 250 kPa (2.50 kgf/cm², 36 psi)
Rear:
290 kPa (2.90 kgf/cm², 42 psi)
High-speed riding: Front:
250 kPa (2.50 kgf/cm², 36 psi)
Rear: 290 kPa (2.90 kgf/cm², 42 psi)Front wheel:Wheel type:
Cast wheel
Rim size: 17M/C x MT3.50Rear wheel:Wheel type:
Cast wheel Rim size:
17M/C x MT6.00
Front brake:Type:
Dual disc brake
Operation: Right hand operation
Specified brake fluid: DOT 4Rear brake:Type:Single disc brake
Operation: Right foot operation
Specified brake fluid:
DOT 4Front suspension:Type:Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel: 120.0 mm (4.72 in)Rear suspension:Type:
Swingarm (link suspension)
Spring/shock absorber type: Coil spring/gas-oil damper
Wheel travel: 120.0 mm (4.72 in)Electrical system:Ignition system:TCI
U1KBE0E0.book Page 2 Monday, July 25, 2011 5:03 PM