2014 NISSAN GT-R wheel size

GTR-26GT-R Overview
For the first 3,000-6,000 miles (5,000-
10,000 km) of the vehicle’s service life,
and for the first 3,000-6,000 miles (5,000-
10,000 km) after a brake replacement, the
brake pad to brake rotor clearance is very
small. When parking, apply the parking
brake and move the shift lever to the
&P
position. Idle the engine for more than 20
seconds without depressing the brake
pedal. This allows the brake pads to move
away from the rotor so the pad does not
contact the rotor.
Additionally, the brakes must be dry before
parking the vehicle after driving on wet roads
or after washing the vehicle. If the roads are
wet, lightly apply the brakes for a short
distance before parking the vehicle to dry
the brakes. After washing the vehicle, dry the
brakes by driving on a dry road for a few
miles and apply the brakes normally based
on traffic and road conditions.
The metallic brake pads and brake disc rotor
may rust together when the brakes are not
applied:
— If the vehicle is not idled for 20 secondswithout the brakes applied, or if the
brakes are applied when the vehicle is
shut off, the rotor and pads can rust
together, even when the brake pads are dry.
— If the brakes are wet when the vehicle is parked and the parking brake is applied
for a long time.
— The hill start assist system can apply the brakes even if the brake pedal is not
depressed. The brake pads and rotors
can rust together if the parking proce-
dure previously described is not fol-
lowed.
Contact a GT-R certified NISSAN dealer if
the brake pads and brake rotor have rusted
together.
NOTICE
To help reduce the possibility of the
rotors and brake pads rusting:
Have the brake pads and/or rotors
quenched when the brake pads are
replaced. For detailed information
about quenching, contact a GT-R certi-
fied NISSAN dealer.
After quenching the brake pads and/or
rotors, apply a brake of 0.5G to stop the
vehicle 6-7 times at least once a week
in a safe location. G-force can be
checked on the multi function display. Refer to the separate Multi Function
Display Owner’s Manual.
. To maintain steady braking performance in
both extremely high and low temperatures,
the gap between the brake pad and caliper
is larger than normal and large-size brake
pads are used. When driving over a bump, a
light rattling sound may be heard from the
brake pad. This does not indicate that there
is a malfunction.
. When the brake disc rotor undergoes
thermal expansion, a ticking noise may be
heard from the engaging portion of the
wheel and the brake disc rotor. This does
not indicate that there is a malfunction. The
noise will reduce when the temperature
decreases.
. In addition to noise resulting from uneven
tire wear discussed in the previous section,
the GT-R tires are more rigid than a typical
passenger car tire and are made from a
specially formulated rubber to maximize the
vehicle’s performance capabilities. These
characteristics cause the GT-R tires to have
more road noise than a typical passenger
car tire. This road noise is normal.

1-34Safety — Seats, seat belts and supplemental restraint system
7. If the booster seat is installed in the frontpassenger seat, push the ignition switch to
the ON position. The front passenger air bag
status light
may or may not illuminate
depending on the size of the child and the
type of booster seat used. (
“Front
passenger air bag and status light” page
1-41)
PRECAUTIONS ON SUPPLEMENTAL
RESTRAINT SYSTEM
This Supplemental Restraint System (SRS)
section contains important information concern-
ing the following systems:
. Driver and passenger supplemental front-
impact air bag (NISSAN Advanced Air Bag
System)
. Front seat-mounted side-impact supple-
mental air bag
. Roof-mounted curtain side-impact supple-
mental air bag
. Seat belt pretensioner
Supplemental front-impact air bag system:
The NISSAN Advanced Air Bag System can
help cushion the impact force to the head and
chest of the driver and front passenger in certain
frontal collisions.
Front seat-mounted side-impact supple-
mental air bag system: This system can help
cushion the impact force to the chest area of the
driver and front passenger in certain side impact
collisions. The side air bags are designed to
inflate on the side where the vehicle is impacted.
Roof-mounted curtain side-impact supple-
mental air bag system: This system can help
cushion the impact force to the head of occupants in the front seating positions in
certain side impact collisions. The curtain air
bags are designed to inflate on the side where
the vehicle is impacted.
These supplemental restraint systems are de-
signed to
supplement the crash protection
provided by the driver and passenger seat belts
and are not a substitute for them. Seat belts
should always be correctly worn and the
occupant seated a suitable distance away from
the steering wheel, instrument panel and door
finishers. (
“Seat belts” page 1-7)
The supplemental air bags operate only
when the ignition switch is in the ON
position.
After pushing the ignition switch to the ON
position, the supplemental air bag warning
light illuminates. The supplemental air bag
warning light will turn off after about 7
seconds if the systems are operational.
SUPPLEMENTAL RESTRAINT
SYSTEM

.Although you can continue driving
with a punctured run-flat tire, re-
member that vehicle handling sta-
bility is reduced, which could lead to
an accident and personal injury.
Also, driving a long distance at high
speeds may damage the tires.
. Do not drive at speeds above 50
MPH (80 km/h) and do not drive
more than 50 miles (80 km) with a
punctured run-flat tire. The actual
distance the vehicle can be driven
on a flat tire depends on outside
temperature, vehicle load, road con-
ditions and other factors.
. When a wheel is replaced, the TPMS
will not function and the low tire
pressure warning light will flash for
approximately 1 minute. The light
will remain on after the 1 minute.
Contact a GT-R certified NISSAN
dealer as soon as possible for tire
replacement and/or system reset-
ting.
. Replacing tires with those not ori-
ginally specified by NISSAN could
affect the proper operation of the
TPMS.CAUTION
.The TPMS is not a substitute for the
regular tire pressure check. Be sure
to check the tire pressure regularly.
. Be sure to install the specified size
of tires on the four wheels.
NOTE:
. If the vehicle is being driven at speeds
of less than 16 MPH (25 km/h) , the
TPMS may not operate correctly.
. The tires of this vehicle are filled with
nitrogen gas. When the tire pressure is
low, fill the tires with nitrogen gas.
Contact a GT-R certified NISSAN dealer
for information on filling the tires with
nitrogen gas.
Master warning light
When the ignition switch is in the ON position,
the master warning light illuminates if any of the
warning displays appear on the vehicle informa-
tion display. (
“Warning display” page 2-
33)
Seat belt warning light and
chime
The light and chime remind you to fasten seat
belts. The light illuminates whenever the ignition
switch is pushed to the ON position, and will
remain illuminated until the driver’s seat belt is
fastened. At the same time, the chime will sound
for about 6 seconds unless the driver’s seat belt
is securely fastened.
The seat belt warning light for the front
passenger will illuminate if the seat belt is not
fastened when the front passenger’s seat is
occupied. For approximately 5 seconds after the
ignition switch is in the ON position, the system
does not activate the warning light for the front
passenger. (
“Seat belts” page 1-7)
Supplemental air bag warning
light
After pushing the ignition switch to the ON
position, the supplemental air bag warning light
will illuminate for about 7 seconds and then turn
off. This means the system is operational.
If any of the following conditions occur, the front
air bag, side air bag, curtain air bag and
pretensioner systems need servicing and your
vehicle must be taken to a GT-R certified
NISSAN dealer.
Instruments and controls2-29

2-38Instruments and controls
damage to the AWD system.
FRONT/REAR TIRE SIZE DISCRE-
PANCY WARNING
This will appear if the diameter of the front and
the rear wheels are different. (“All-Wheel
Drive (AWD) warning light” page 2-25)
AWD SYSTEM WARNING
This will appear if the AWD system is not
functioning properly while the engine is running.
(
“All-Wheel Drive (AWD) warning light”
page 2-25)

If any malfunction occurs in the AWD system
while the engine is running, the warning light will
come on.
The warning light may blink rapidly (about twice
per second) while trying to free a stuck vehicle
due to high AWD clutch temperature. The
driving mode may change to two-wheel drive.
If the warning light blinks rapidly during opera-
tion, stop the vehicle with the engine idling in a
safe place immediately. Then if the light goes off
after a while, you can continue driving.
A large difference between the diameters of
front and rear wheels will make the warning light
blink slowly (about once per two seconds) . Pull
off the road in a safe area, and idle the engine.
Check that all tire sizes are the same, tire
pressure is correct and tires are not worn and
winter tires are not installed on the front or rear
wheels only.
If the warning light is blinking after the above
operation, have your vehicle checked by a GT-R
certified NISSAN dealer as soon as possible.
If non-genuine GT-R tires are used, the warning
light may illuminate. (
“GT-R special speci-
fication parts” page GTR-4)
WARNING
. Do not attempt to raise two wheels
off the ground and shift the trans-
mission to any drive or reverse
position with the engine running.
Doing so may result in drivetrain
damage or unexpected vehicle
movement which could result in
serious vehicle damage or personal
injury.
. Do not attempt to test an AWD
equipped vehicle on a 2-wheel dy-
namometer (such as the dynam-
ometers used by some states for
emissions testing) or similar equip-
ment even if the other two wheels
are raised off the ground. Make sure
that you inform the test facility
personnel that your vehicle is
equipped with AWD before it is
placed on a dynamometer. Using
the wrong test equipment may re-
sult in drivetrain damage or unex-
pected vehicle movement which
could result in serious vehicle da-
mage or personal injury.
NOTICE
.If the warning light comes on while
driving there may be a malfunction
in the AWD system. Reduce the
vehicle speed and have your vehicle
checked by a GT-R certified NISSAN
dealer as soon as possible.
. If the warning light remains on after
the above operation, have your
vehicle checked by a GT-R certified
NISSAN dealer as soon as possible.
. The powertrain may be damaged if
you continue driving with the warn-
ing light blinking.
. Do not spin the rear wheels while
driving. Spinning the rear wheels
may increase the temperatures of
the AWD clutch system and damage
the system. Adjust the accelerator
pedal position to stop wheel spin.
Starting and driving5-41

mately 4 seconds again. The driving mode will
switch to the normal AWD mode.
Reduction of the tight corner braking phenom-
enon will be cancelled when:
.the R mode is selected with the transmission
setup switch
. the SAVE mode is selected with the
transmission setup switch and the OFF
mode is selected with the VDC setup switch
. the ignition switch is pushed to the "OFF"
position
. the R mode start function is used
WARNING
Do not reduce the tight corner braking
phenomenon when driving on a road
surface that is slippery or covered in
snow, because the driving mode will
switch to 2WD. This may cause tire
slipping and may cause a loss of control
and result in a collision, personal injury
or death.
TIRES
This vehicle is equipped with special tires. When
changing the tires, install the designated special
tires. Replacing tires as a set of four with new
ones is recommended. However, if a tire is
punctured or damaged, it may be possible to
replace only the damaged tire. Determining
whether one tire or a complete set of tires
should be replaced is based on a number of
factors including tire wear and condition. Con-
tact your GT-R certified NISSAN dealer. They
can recommend if an individual tire or a
complete set should be replaced.
NOTICE
If tires other than the designated tires,
tires with large differences in wear or
tires of different sizes are installed, the
AWD performance will be degraded and
the drive mechanism may be damaged.
AWD SYSTEM CHARACTERISTICS
The AWD system automatically distributes the
optimal torque to the front and rear wheels. This
provides both the superior turning performance
of a rear wheel drive vehicle and the traction of a
AWD vehicle. Electronic control continuously distributes tor-
que to the front and rear wheels in the range
from 0:100 (rear-wheel drive mode) to 50:50
(all-wheel drive mode) to match the driving
conditions and road conditions. This allows the
engine output (torque) to be effectively trans-
mitted to the road surface.
Starting and driving5-43

5-48Starting and driving
ANTI-LOCK BRAKING SYSTEM
(ABS)
WARNING
.The Anti-lock Braking System (ABS)
is a sophisticated device, but it
cannot prevent accidents resulting
from careless or dangerous driving
techniques. It can help maintain
vehicle control during braking on
slippery surfaces. Remember that
stopping distances on slippery sur-
faces will be longer than on normal
surfaces even with ABS. Stopping
distances may also be longer on
rough, gravel or snow covered
roads, or if you are using tire chains.
Always maintain a safe distance
from the vehicle in front of you.
Ultimately, the driver is responsible
for safety.
. Tire type and condition may also
affect braking effectiveness. When
replacing tires, install the specified
size of tires on all four wheels.
The Anti-lock Braking System (ABS) controls the brakes so the wheels do not lock during hard
braking or when braking on slippery surfaces.
The system detects the rotation speed at each
wheel and varies the brake fluid pressure to
prevent each wheel from locking and sliding. By
preventing each wheel from locking, the system
helps the driver maintain steering control and
helps to minimize swerving and spinning on
slippery surfaces.
Using the system
Depress the brake pedal and hold it down.
Depress the brake pedal with firm steady
pressure, but do not pump the brakes. The
ABS will operate to prevent the wheels from
locking up. Steer the vehicle to avoid obstacles.
WARNING
Do not pump the brake pedal. Doing so
may result in increased stopping dis-
tances.
Self-test feature
The ABS includes electronic sensors, electric
pumps, hydraulic solenoids and a computer. The
computer has a built-in diagnostic feature that
tests the system each time you start the engine
and move the vehicle at a low speed in forwardor reverse. When the self-test occurs, you may
hear a “clunk” noise and/or feel a pulsation in the
brake pedal. This does not indicate that there is
a malfunction. If the computer senses a mal-
function, it switches the ABS off and illuminates
the ABS warning light on the instrument panel.
The brake system then operates normally, but
without anti-lock assistance.
If the ABS warning light illuminates during the
self-test or while driving, have the vehicle
checked by a GT-R certified NISSAN dealer.
Normal operation
The ABS operates at speeds above 3 to 6 MPH
(5 to 10 km/h). The speed varies according to
road conditions.
When the ABS senses that one or more wheels
are close to locking up, the actuator rapidly
applies and releases hydraulic pressure. This
action is similar to pumping the brakes very
quickly. You may feel a pulsation in the brake
pedal and hear a noise from under the hood or
feel a vibration from the actuator when it is
operating. This is normal and indicates that the
ABS is operating properly. However, the pulsa-
tion may indicate that road conditions are
hazardous and extra care is required while
driving.
BRAKE ASSIST

5-52Starting and driving
TIRE EQUIPMENT
The GT-R summer tires are made from a
specially formulated rubber to maximize the
vehicle’s performance capabilities. Performance
of summer tires is substantially reduced when
temperatures are less than 328F(08C) so you
must drive carefully. NISSAN recommends the
use of winter or all-season tires on all four
wheels if you plan to operate your vehicle in
snowy or icy conditions when temperatures are
less than 328F(0 8C) .
WARNING
Never use summer tires when the
temperature is below −48F(−208C) to
prevent permanent tread deformation
which may cause tire damage or tire
failure. This may cause a loss of vehicle
control which can result in serious
personal injury or death.
Tire chains may be used. (
“Tire chains”
page 8-40)
If you install tires, they must also be the specified
size, brand, construction and tread pattern on all
four wheels.
SPECIAL WINTER EQUIPMENT
It is recommended that the following items be
carried in the vehicle during winter:
. A scraper and stiff-bristled brush to remove
ice and snow from the windows and wiper
blades.
. A sturdy, flat board to be placed under the
jack to give it firm support.
. A shovel to dig the vehicle out of snowdrifts.
. Extra window washer fluid to refill the
reservoir tank.
DRIVING ON SNOW OR ICE
WARNING
.Wet ice (328F, 0 8C and freezing rain) ,
very cold snow or ice can be slick
and very hard to drive on. The
vehicle will have much less traction
or “grip” under these conditions. Try
to avoid driving on wet ice until the
road is salted or sanded.
. Whatever the condition, drive with
caution. Accelerate and slow down
with care. If accelerating or down-
shifting too fast, the drive wheels
will lose even more traction. .
Allow more stopping distance under
these conditions. Braking should be
started sooner than on dry pave-
ment.
. Allow greater following distances
on slippery roads.
. Watch for slippery spots (glare ice) .
These may appear on an otherwise
clear road in shaded areas. If a
patch of ice is seen ahead, brake
before reaching it. Try not to brake
while on the ice, and avoid any
sudden steering maneuvers.
. Do not use the cruise control on
slippery roads.
. Snow can trap dangerous exhaust
gases under your vehicle. Keep
snow clear of the exhaust pipe and
from around your vehicle.
NOTE:
When driving on snow, select the SAVE
mode with the setup switch. By selecting
the SAVE mode, the engine output is
controlled appropriately for snow or slip-
pery road surfaces. This enables the vehi-
cle to start or accelerate smoothly.