tire type INFINITI FX 2012 User Guide

8-38Maintenance and do-it-yourself
bears white lettering or bears manu-
facturer, brand and/or model name
molding that is higher or deeper than
the same molding on the other side-
wall of the tire, or (2) the outward
facing sidewall of an asymmetrical
tire that has a particular side that
must always face outward when
mounted on a vehicle.
TYPES OF TIRES
WARNING
.When changing or replacing tires, be
sure all four tires are of the same type
(Example: Summer, All Season or Snow)
and construction. An INFINITI retailer
may be able to help you with information
about tire type, size, speed rating and
availability.
. Replacement tires may have a lower
speed rating than the factory equipped
tires, and may not match the potential
maximum vehicle speed. Never exceed
the maximum speed rating of the tire.
. Replacing tires with those not originally specified by INFINITI could affect the
proper operation of the TPMS.
. For additional information regarding
tires, refer to “Important Tire Safety
Information” (US) or“Tire Safety Infor-
mation” (Canada) in the Warranty Infor-
mation Booklet.
All season tires
INFINITI specifies all season tires on some
models to provide good performance all
year, including snowy and icy road condi-
tions. All Season tires are identified by ALL
SEASON and/or M&S (Mud and Snow) on
the tire sidewall. Snow tires have better
snow traction than All Season tires and
may be more appropriate in some areas.
Summer tires
INFINITI specifies summer tires on some
models to provide superior performance on
dry roads. Summer tire performance is
substantially reduced in snow and ice.
Summer tires do not have the tire traction
rating M&S on the tire sidewall.
If you plan to operate your vehicle in snowy
or icy conditions, INFINITI recommends the
use of SNOW tires or ALL SEASON tires on all four wheels.
Snow tires
If snow tires are needed, it is necessary to
select tires equivalent in size and load
rating to the original equipment tires. If
you do not, it can adversely affect the
safety and handling of your vehicle.
Generally, snow tires will have lower speed
ratings than factory equipped tires and
may not match the potential maximum
vehicle speed. Never exceed the maximum
speed rating of the tire.
If you install snow tires, they must be the
same size, brand, construction and tread
pattern on all four wheels.
For additional traction on icy roads,
studded tires may be used. However, some
U.S. states and Canadian provinces prohi-
bit their use. Check local, state and
provincial laws before installing studded
tires. Skid and traction capabilities of
studded snow tires, on wet or dry surfaces,
may be poorer than that of non-studded
snow tires.

TIRE CHAINS
Use of tire chains may be prohibited
according to location. Check the local laws
before installing tire chains. When instal-
ling tire chains, make sure they are the
proper size for the tires on your vehicle and
are installed according to the chain man-
ufacturer’s suggestions. Use only SAE
Class S chains. Class“S”chains are used
on vehicles with restricted tire to vehicle
clearance. Vehicles that can use Class “S”
chains are designed to meet the SAE
standard minimum clearances between
the tire and the closest vehicle suspension
or body component required to accommo-
date the use of a winter traction device (tire
chains or cables). The minimum clearances
are determined using the factory equipped
tire size. Other types may damage your
vehicle. Use chain tensioners when recom-
mended by the tire chain manufacturer to
ensure a tight fit. Loose end links of the
tire chain must be secured or removed to
prevent the possibility of whipping action
damage to the fenders or underbody. If
possible, avoid fully loading your vehicle
when using tire chains. In addition, drive at
a reduced speed. Otherwise, your vehicle
may be damaged and/or vehicle handling and performance may be adversely af-
fected.
Tire chains must be installed only on the
rear wheels and not on the front wheels.
Never install tire chains on a TEMPORARY
USE ONLY spare tire.
Do not use tire chains on dry roads. Driving
with tire chains in such conditions can
cause damage to the various mechanisms
of the vehicle due to some overstress.
SDI1662
CHANGING WHEELS AND TIRES
Tire rotation
INFINITI recommends rotating the
tires every 7,500 miles (12,000 km).
(See
“Flat tire” (P.6-2) for tire repla-
cing procedures.)
As soon as possible, tighten the
wheel nuts to the specified torque
with a torque wrench.
Wheel nut tightening torque:80 ft-lb (108 N·m)
Maintenance and do-it-yourself8-39

8-40Maintenance and do-it-yourself
The wheel nuts must be kept tigh-
tened to the specification at all
times. It is recommended that wheel
nuts be tightened to the specifica-
tion at each tire rotation interval.
WARNING
.After rotating the tires, check and
adjust the tire pressure.
. Retighten the wheel nuts when
the vehicle has been driven for
600 miles (1,000 km) (also in
cases of a flat tire, etc.).
. Do not include the T-type spare
tire or any other small size spare
tire in the tire rotation.
. For additional information regard-
ing tires, refer to “Important Tire
Safety Information ”(US) or “Tire
Safety Information ”(Canada) in
the Warranty Information Booklet.
SDI1663
1.Wear indicator
2.Wear indicator location mark
Tire wear and damage
WARNING
. Tires should be periodically in-
spected for wear, cracking, bul-
ging or objects caught in the
tread. If excessive wear, cracks,
bulging or deep cuts are found,
the tire(s) should be replaced. .
The original tires have built-in
tread wear indicators. When wear
indicators are visible, the tire(s)
should be replaced.
. Tires degrade with age and use.
Have tires, including the spare,
over 6 years old checked by a
qualified technician, because
some tire damage may not be
obvious. Replace the tires as
necessary to prevent tire failure
and possible personal injury.
. Improper service of the spare tire
may result in serious personal
injury. If it is necessary to repair
the spare tire, contact an INFINITI
retailer.
. For additional information regard-
ing tires, refer to “Important Tire
Safety Information ”(US) or “Tire
Safety Information ”(Canada) in
the Warranty Information Booklet.

Replacing wheels and tires
When replacing a tire, use the same size,
tread design, speed rating and load carry-
ing capacity as originally equipped. (See
“Specifications”(P.9-8) for recommended
types and sizes of tires and wheels.)
WARNING
. The use of tires other than those
recommended or the mixed use of tires
of different brands, construction (bias,
bias-belted or radial), or tread patterns
can adversely affect the ride, braking,
handling, ground clearance, body-to-tire
clearance, tire chain clearance, speed-
ometer calibration, headlight aim and
bumper height. Some of these effects
may lead to accidents and could result in
serious personal injury.
. If the wheels are changed for any
reason, always replace with wheels
which have the same off-set dimension.
Wheels of a different off-set could cause
premature tire wear, degrade vehicle
handling characteristics and/or interfer-
ence with the brake discs/drums. Such
interference can lead to decreased brak- ing efficiency and/or early brake pad/
shoe wear. See
“Wheels and tires” (P.9-
9) of this manual for wheel off-set
dimensions.
. When a spare tire is mounted or 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 1 minute.
Contact your INFINITI retailer as soon as
possible for tire replacement and/or
system resetting.
. Replacing tires with those not originally
specified by INFINITI could affect the
proper operation of the TPMS.
. Do not install a damaged or deformed
wheel or tire even if it has been repaired.
Such wheels or tires could have struc-
tural damage and could fail without
warning.
. The use of retread tire is not recom-
mended.
. For additional information regarding
tires, refer to “Important Tire Safety
Information” (US) or“Tire Safety Infor-
mation” (Canada) in the Warranty Infor-
mation Booklet.
All-Wheel Drive (AWD) models
CAUTION
. Always use tires of the same type, size,
brand, construction (bias, bias-belted or
radial), and tread pattern on all four
wheels. Failure to do so may result in a
circumference difference between tires
on the front and rear axles which will
cause excessive tire wear and may
damage the transmission, transfer case
and differential gears.
. ONLY use spare tires specified for the
AWD model.
If excessive tire wear is found, it is
recommended that all four tires be re-
placed with tires of the same size, brand,
construction and tread pattern. The tire
pressure and wheel alignment should also
be checked and corrected as necessary.
Contact an INFINITI retailer.
Wheel balance
Unbalanced wheels may affect vehicle
handling and tire life. Even with regular
use, wheels can get out of balance. There-
fore, they should be balanced as required.
Maintenance and do-it-yourself8-41

8-42Maintenance and do-it-yourself
Wheel balance service should be per-
formed with the wheels off the vehicle.
Spin balancing the wheels on the vehicle
could lead to mechanical damage.
For additional information regarding tires,
refer to“Important Tire Safety Information”
(US) or “Tire Safety Information” (Canada)
in the INFINITI Warranty Information Book-
let.
Care of wheels
See “Cleaning exterior” (P.7-2) for details
about care of the wheels.
Spare tire (TEMPORARY USE ONLY
(T-type) spare tire)
When a spare tire is mounted (TEMPORARY
USE ONLY or conventional), the TPMS will
not function.
Observe the following precautions if the T-
type spare tire must be used, otherwise
your vehicle could be damaged or involved
in an accident.
WARNING
. The T-type spare tire should be used for
emergency use. It should be replaced
with the standard tire at the first opportunity to avoid possible tire or
differential damage.
. Drive carefully while the TEMPORARY
USE ONLY spare tire is installed. Avoid
sharp turns and abrupt braking while
driving.
. Periodically check spare tire inflation
pressure. Always keep the pressure of
the TEMPORARY USE ONLY spare tire at
60 psi (420 kPa, 4.2 bar). Always keep
the pressure of the full size spare tire (if
so equipped) at the recommended pres-
sure for standard tires, as indicated on
the Tire and Loading Information label.
For Tire and Loading Information label
location, see “Tire and Loading Informa-
tion label” in the index of this manual.
. With the TEMPORARY USE ONLY spare
tire installed do not drive your vehicle at
speeds faster than 50 MPH (80 km/h).
. When driving on roads covered with
snow or ice, the TEMPORARY USE ONLY
spare tire should be used on the front
wheels and original tire used on the rear
wheels (drive wheels). Use tire chains
only on the two rear original tires.
. Tire tread of the TEMPORARY USE ONLY
spare tire will wear at a faster rate than the standard tire. Replace the spare tire
as soon as the tread wear indicators
appear.
. Do not use the spare tire on other
vehicles.
. Do not use more than one spare tire at
the same time.
. Do not tow a trailer when the TEMPOR-
ARY USE ONLY spare tire is installed.
CAUTION
.Do not use tire chains on a TEMPORARY
USE ONLY spare tire. Tire chains will not
fit properly and may cause damage to
the vehicle.
. Because the TEMPORARY USE ONLY
spare tire is smaller than the original
tire, ground clearance is reduced. To
avoid damage to the vehicle, do not
drive over obstacles. Also do not drive
the vehicle through an automatic car
wash since it may get caught.

STI0397B
VK50VE engine
STI0425
VQ35HR engine
WHEELS AND TIRES
Road wheel
TypeSizeOffset in (mm)
Conventional 18
68J
1.97 (50)
20
68J
21 69-1/2J
Spare 18
64-1/2T 1.18 (30)/0.98 (25)*
*: Aluminum
Technical and consumer information9-9

9-10Technical and consumer information
Tire
TypeSizePressure PSI (kPa) [Cold]
Conventional P265/60R18
33 (230)
P265/50R20
P265/45R21
Spare (T-type) T175/90D18
60 (420)
DIMENSIONS
Overall length (With front license plate) in (mm) 191.3 (4,860)
Overall width in (mm)75.9 (1,925)
Overall height in (mm)
65.0 (1,650)*1
66.1 (1,680)*2
Front tread in (mm)64.4 (1,635)
Rear tread in (mm)
64.6 (1,640)
Wheelbase in (mm)113.6 (2,885)
*1: Model without roof rack
*2: Model with roof rack

9-18Technical and consumer information
SIC3849
SECURING THE LOAD
There are tie down hooks located in the
cargo area as shown. The tie down hooks
can be used to secure cargo with ropes or
other types of straps.
Do not apply a total load of more than 22
lb. (98 N) to a single hook when securing
cargo.
WARNING
.Properly secure all cargo with ropes or
straps to help prevent it from sliding or
shifting. Do not place cargo higher than the seatbacks. In a sudden stop or
collision, unsecured cargo could cause
personal injury.
. The child restraint top tether strap may
be damaged by contact with items in the
cargo area. Secure any items in the
cargo area. Your child could be seriously
injured or killed in a collision if the top
tether strap is damaged.
. Do not load your vehicle any heavier
than the GVWR or the maximum front
and rear GAWRs. If you do, parts of your
vehicle can break, tire damage could
occur, or it can change the way your
vehicle handles. This could result in loss
of control and cause personal injury.
LOADING TIPS
.The GVW must not exceed GVWR
or GAWR as specified on the F.M.V.
S.S./C.M.V.S.S. certification label.
.Do not load the front and rear axle
to the GAWR. Doing so will exceed
the GVWR.
WARNING
.Properly secure all cargo to help
prevent it from sliding or shifting.
Do not place cargo higher than the
seatbacks. In a sudden stop or
collision, unsecured cargo could
cause personal injury.
.Do not load your vehicle any
heavier than the GVWR or the
maximum front and rear GAWRs.
If you do, parts of your vehicle can
break, tire damage could occur, or
it can change the way your vehicle
handles. This could result in loss
of control and cause personal
injury.
.Overloading could not only short-
en the life of your vehicle and the
tires, but also could lead to
hazardous vehicle handling and
long braking distance. This may
cause a premature tire malfunc-
tion, which could result in a

to the hitch, not to the vehicle bumper or
axle. The safety chains can be attached to
the bumper if the hitch ball is mounted to
the bumper. Be sure to leave enough slack
in the chains to permit turning corners.
Trailer lights
CAUTION
When splicing into the vehicle electrical
system, a commercially available power-
type module/converter must be used to
provide power for all trailer lighting. This
unit uses the vehicle battery as a direct
power source for all trailer lights while
using the vehicle tail light, stoplight and
turn signal circuits as a signal source. The
module/converter must draw no more than
15 milliamps from the stop and tail lamp
circuits. Using a module/converter that
exceeds these power requirements may
damage the vehicle’s electrical system.
See a reputable trailer retailer to obtain
the proper equipment and to have it
installed.
Trailer lights should comply with federal
and/or local regulations. For assistance in hooking up trailer lights, contact an
INFINITI retailer or reputable trailer retailer.
Trailer brakes
If your trailer is equipped with a braking
system, make sure it conforms to federal
and/or local regulations and that it is
properly installed.
WARNING
Never connect a trailer brake system directly
to the vehicle brake system.
Pre-towing tips
.
Be certain your vehicle maintains a level
position when a loaded or unloaded
trailer is hitched. Do not drive the
vehicle if it has an abnormal nose-up
or nose-down condition; check for
improper tongue load, overload, worn
suspension or other possible causes of
either condition.
. Always secure items in the trailer to
prevent load shift while driving.
. Keep the cargo load as low as possible
in the trailer to keep the trailer center of
gravity low. .
Load the trailer so approximately 60%
of the trailer load is in the front half and
40% is in the back half. Also make sure
the load is balanced side to side.
. Check your hitch, trailer tire pressure,
vehicle tire pressure, trailer light opera-
tion, and trailer wheel lug nuts every
time you attach a trailer to the vehicle.
. Be certain your rearview mirrors con-
form to all federal, state or local
regulations. If not, install any mirrors
required for towing before driving the
vehicle.
. Determine the overall height of the
vehicle and trailer so the required
clearance is known.Trailer towing tips
In order to gain skill and an understanding
of the vehicle’ s behavior, you should
practice turning, stopping and backing up
in an area which is free from traffic.
Steering stability, and braking perfor-
mance will be somewhat different than
under normal driving conditions.
. Always secure items in the trailer to
prevent load shift while driving.
. Lock the trailer hitch coupler with a pin
or lock to prevent the coupler from
Technical and consumer information9-25

10-6
Preview Function warning light .......................... 2-17
Push starting .................................................... 6-10
“PUSH” warning ............................................... 2-24
Push-button ignition switch ..................... 5-10, 5-11
R
Radio ................................................................ 4-49 Car phone or CB radio ................................. 4-93
FM-AM-SAT radio with Compact Disc
(CD) player ................................................... 4-63
Rain-sensing auto wiper system ........................ 2-34
Rapid air pressure loss ....................................... 5-7
Readiness for inspection/maintenance
(I/M) test .......................................................... 9-31 Rear Active Steer system .................................. 5-85
Rear Active Steer warning light ......................... 2-17
Rear center seat belt ......................................... 1-17Rear door lock, Child safety rear door lock ......... 3-6
Rear seats .......................................................... 1-5
Rear window and outside mirror
defroster switch ................................................ 2-36
Rear window wiper blades ................................ 8-24
Rearview monitor .............................................. 4-24
Recorders, Event data ....................................... 9-31
Registering your vehicle in another country ...... 9-11
Remote keyless entry system ............................ 3-14
Reporting safety defects ................................... 9-30
Roadside assistance program ............................. 6-2
Rollover .............................................................. 5-6 Roof
Moonroof ..................................................... 2-61 Roof rack ..................................................... 2-57
S
Safety
Child seat belts ........................................... 1-18
Towing safety ............................................... 9-23
Satellite radio operation ................................... 4-64
Seat adjustment Front power seat adjustment .......................... 1-3
Front seats ..................................................... 1-3
Seat belt(s) Child safety ................................................. 1-18
Infants ......................................................... 1-19
Injured persons ........................................... 1-13Larger children ............................................. 1-19
Precautions on seat belt usage .................... 1-11
Pre-crash seat belts with comfort function ... 1-13Pregnant women .......................................... 1-13
Rear center seat belt .................................... 1-17Seat belt cleaning .......................................... 7-6
Seat belt extenders ...................................... 1-17
Seat belt maintenance ................................. 1-17Seat belt warning light and chime ............... 2-17
Seat belts .................................................... 1-11
Seat belts with pretensioners ...................... 1-49
Shoulder belt height adjustment .................. 1-16
Small children ............................................. 1-19
Three-point type .......................................... 1-14
Seat synchronization function ........................... 3-33
Seat(s)
Climate controlled seats .............................. 2-45 Driver-side memory ...................................... 3-32
Heated seats ............................................... 2-43
Seats ............................................................. 1-2
Security system (INFINITI Vehicle Immobilizer
System), Engine start ........................................ 2-32 Security system, Vehicle security system .......... 2-30
Selector lever
Shift lock release ......................................... 5-19
Servicing climate control ................................... 4-48
SETTING button ................................................. 4-15
Shift lock release Transmission ............................................... 5-19
SHIFT “P”warning ............................................ 2-24
Shifting, Automatic transmission ....................... 5-15
Shoulder belt height adjustment, For
front seats ........................................................ 1-16
Snow mode switch ............................................ 2-46
Spare tire ........................................................... 9-9
Spark plugs ...................................................... 8-20
Speedometer ...................................................... 2-6
Starting Before starting the engine ........................... 5-13
Jump starting ................................................. 6-8
Precautions when starting and driving ........... 5-3
Push starting ............................................... 6-10
Starting the engine ...................................... 5-14
STATUS button .................................................... 4-9
Status light, Front passenger air bag ................ 1-44
Steering Power steering fluid ..................................... 8-15
Power steering system ................................. 5-77