tire type INFINITI QX55 2023 User Guide

O2TIN (Tire Identification Number)
for a new tire (example: DOT XX XX
XXX XXXX)
1. DOT: Abbreviation for the “Depart- ment Of Transportation”. The sym-
bol can be placed above, below or
to the left or right of the Tire Iden-
tification Number.
2. Two-digit code: Manufacturer's identification mark. 3. Two-digit code: Tire size.
4. Three-digit code: Tire type code
(Optional).
5. Four numbers represent the week and year the tire was built. For ex-
ample, the numbers 3103 means
the 31st week of 2003. If these
numbers are missing then look on
the other sidewall of the tire.
LDI2786
Example (Type A) (if so equipped)
Do-it-yourself8-33

O2TIN (Tire Identification Number)
for a new tire (example: DOT XXX
XXXXXX XXXX)
1. DOT: Abbreviation for the “Depart- ment Of Transportation”. The sym-
bol can be placed above, below or
to the left of the Tire Identification
Number.
2. Three-digit code: Manufacturer's identification mark. 3. Six-digit code: Descriptive code
used to identify significant charac-
teristics of the tire.
4. Four numbers represent the week and year the tire was built. For ex-
ample, the numbers 3103 means
the 31st week of 2003.
O3Tire ply composition and material
The number of layers or plies of
rubber-coated fabric in the tire. Tire manufacturers also must indicate the
materials in the tire, which include
steel, nylon, polyester and others.
O4Maximum permissible inflation
pressure
This number is the greatest amount of
air pressure that should be put in the
tire. Do not exceed the maximum per-
missible inflation pressure.
O5Maximum load rating
This number indicates the maximum
load in kilograms and pounds that can
be carried by the tire. When replacing
the tires on the vehicle, always use a
tire that has the same load rating as
the factory installed tire.
O6Term of “tubeless” or “tube type”
Indicates whether the tire requires an
inner tube (“tube type”) or not
(“tubeless”).
LDI3639
Example (Type B) (if so equipped)
8-34Do-it-yourself

O7The word “radial”
The word “radial” is shown if the tire
has radial structure.
O8Manufacturer or brand name
Manufacturer or brand name is
shown.
Other Tire-related Terminology
In addition to the many terms that are
defined throughout this section, In-
tended Outboard Sidewall is (1) the
sidewall that contains a whitewall,
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 (i.e.,
Summer, All Season or Snow) and con-
struction. 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 low tire pressure
warning system.
• Always use tires of the same type, size,
brand, construction and tread pattern on
all four wheels. Failure to do so may re-
sult in a circumference difference be-
tween tires on the front and rear axles
which can cause the Vehicle Dynamic
Control (VDC) system to malfunction re-
sulting in personal injury or death, exces-
sive tire wear and may damage the
transmission, transfer case and differen-
tial gears. •
For additional information regarding
tires, refer to “Important Tire Safety In-
formation” (US) or “Tire Safety Informa-
tion” (Canada) in the Warranty Informa-
tion Booklet.
All-Wheel Drive (AWD) models
CAUTION
• ONLY use spare tires specified for the
AWD model.
If excessive tire wear is found, it is recom-
mended that all four tires be replaced 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. It is recommended
that you visit an INFINITI retailer for this
service.
All season tires
INFINITI specifies All Season tires on some
models to provide good performance all year,
including snowy and icy road conditions. All
Season tires are identified by ALL SEASON
and/or M&S on the tire sidewall. Snow tires
have better snow traction than All Season
tires and may be more appropriate in some
areas.
Do-it-yourself8-35

If the low tire pressure warning light illumi-
nates continuously and the “Flat Tire – Visit
dealer" warning appears in the vehicle infor-
mation display:
• Do not exceed 50 mph (80 km/h).
• Increase your following distance to allowfor increased stopping distances.
• Avoid sudden maneuvers, hard cornering and hard braking.
WARNING
• Although you can continue driving with a
punctured run-flat tire, remember that
vehicle handling stability is reduced,
which could lead to an accident and per-
sonal injury. Also, driving a long distance
at high speeds may damage the tire.
• Do not drive at speeds above 50 mph (80
km/h) and do not drive more than ap-
proximately 93 miles (150 km) with a
punctured run-flat tire. The actual dis-
tance the vehicle can be driven on a flat
tire depends on outside temperature, ve-
hicle load, read conditions and other
factors.
• Drive safely at reduced speeds. Avoid
hard cornering or braking, which may
cause you to lose control of the vehicle. •
If you detect any unusual sounds or vi-
brations while driving with a punctured
run-flat tire, pull off the road to a safe
location and stop the vehicle as soon as
possible. The tire may be seriously dam-
aged and need to be replaced.
CAUTION
• Never install tire chains on a punctured
run-flat tire, as this could damage your
vehicle.
• Avoid driving over any projection or pot-
hole, as the clearance between the ve-
hicle and the ground is smaller than
normal.
• Do not enter an automated car wash
with a punctured run-flat tire.
• Have the punctured tire inspected by an
INFINITI retailer or other authorized re-
pair shop. Replace the tire as soon as
possible if the tire is seriously damaged. •
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 dam-
age the transmission, transfer case and
differential gears (AWD models).
• ONLY use spare tires specified for the
AWD model.
• If excessive tire wear is found, it is rec-
ommended that all four tires be replaced
with tires of the same size, brand, con-
struction and tread pattern. The tire
pressure and wheel alignment should
also be checked and corrected as neces-
sary. It is recommended that you visit an
INFINITI retailer for this service.
TIRE CHAINS
CAUTION
Tire chains/cables should not be installed
on P255/45RF20 size tires. Installation of
the tire chains/cables on P255/45RF20
size tires will cause damage to the vehicle.
If you plan to use tire chains/cables, you
should install P235/55RF19 size tires on
your vehicle.
Do-it-yourself8-37

Use of tire chains may be prohibited accord-
ing to location. Check the local laws before
installing tire chains. When installing tire
chains, make sure they are the proper size for
the tires on your vehicle and are installed
according to the chain manufacturer's sug-
gestions.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
minimum clearances between the tire and the
closest vehicle suspension or body compo-
nent required to accommodate the use of a
winter traction device (tire chains or cables).
The minimum clearances are determined us-
ing the factory equipped tire size. Other types
may damage your vehicle. Use chain tension-
ers when recommended 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 whip-
ping action damage to the fenders or under-
body. If possible, avoid fully loading your ve-
hicle 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 affected.
Do not use tire chains on dry roads. Driving
with chains in such conditions can cause
damage to the various mechanisms of the
vehicle due to some overstress.
CHANGING WHEELS AND TIRES
Tire rotation
INFINITI recommends rotating the
tires every 7,500 miles (12,000 km).
For additional information on tire re-
placing procedures, see “Flat tire”
(P. 6-3).
As soon as possible, tighten the wheel
nuts to the specified torque with a
torque wrench. Wheel nut tightening torque:
83 ft-lb (113 N·m)
The wheel nuts must be kept tight-
ened to specifications at all times. It is
recommended that wheel nuts be
tightened to specification at each tire
rotation interval.
WARNING
•
After rotating the tires, check and
adjust the tire pressure.
•Do not include the spare tire in the
tire rotation.
•For additional information re-
garding tires, refer to “Important
Tire Safety Information” (US) or
“Tire Safety Information”
(Canada) in the Warranty Infor-
mation Booklet.
WDI0258
8-38Do-it-yourself

Engine coolant*:First replacement interval is
105,000 miles (168,000 km). After first re-
placement, replace every 75,000 miles
(120,000 km) or 60 months. When adding or
replacing coolant, be sure to use only Genuine
NISSAN Long Life Antifreeze/Coolant (blue)
or equivalent with the proper mixture. For
additional information on the proper mixture
for your area, see “Engine cooling system”
(P. 8-4).
NOTE: Mixing any other type of coolant or
the use of non-distilled water may reduce
the recommended service interval of the
coolant.
Engine oil and oil filter: Replace engine oil
and oil filter at the specified intervals. For
recommended oil grade and viscosity, see
“Recommended fluids/lubricants and capaci-
ties” (P. 10-2).
Engine valve clearance*: Inspect only if valve
noise increases. Adjust valve clearance if
necessary.
Evaporative emissions control vapor lines*:
Check vapor lines for leaks or looseness.
Tighten connections or replace parts as
necessary.
Fuel filter: Periodic maintenance is not re-
quired. (in-tank type filter) Fuel lines*:
Check the fuel hoses, piping and
connections for leaks, looseness, or deterio-
ration. Tighten connections or replace parts
as necessary.
Spark plugs: Replace every 105,000 miles
(168,000 km). Replace the spark plug when
the plug gap exceeds 0.045 in (1.25 mm)
even if within specified replacement mileage.
Install new plugs of the same type as origi-
nally equipped.
CHASSIS AND BODY
MAINTENANCE:
Brake lines and cables: Visually inspect for
proper installation. Check for chafing, cracks,
deterioration, and signs of leaking. Replace
any deteriorated or damaged parts
immediately.
Brake pads and rotors: Check for wear, de-
terioration and fluid leaks. Replace any dete-
riorated or damaged parts immediately.
Exhaust system: Visually inspect the exhaust
pipes, muffler and hangers for leaks, cracks,
deterioration, and damage. Tighten connec-
tions or replace parts as necessary.
In-cabin microfilter: Replace at specified in-
tervals. When driving for prolonged periods in
dusty conditions, replace the filter more
frequently. Propeller shaft(s):
Check for damage, loose-
ness, and grease leakage. (AWD)
Steering gear and linkage, axle and suspen-
sion parts, drive shaft boots: Check for dam-
age, looseness, and leakage of oil or grease.
Under severe driving conditions, inspect more
frequently.
Tire rotation: Rotate tires at the specified
interval shown in the maintenance schedule.
When rotating tires, check for damage and
uneven wear. Replace if necessary.
Transmission fluid/oil, differential oil and
transfer case oil: Visually inspect for signs of
leakage at specified intervals.
Replace at specified intervals.
9-6Maintenance and schedules

WHEELS AND TIRES
Wheel typeOffset
Metric
MeasureOffset
US
Measure
Size
Aluminum 44 mm 1.73 in 20 x 8.5J
Tire size P255/45RF20
Spare tire Not equipped
DIMENSIONS AND WEIGHTS
Metric
MeasureUS
Measure
Overall length with license plate bracket 4,732 mm 186.3 in
Overall width without mirrors 1,903 mm 74.9 in
with mirrors 2,161 mm 85.1 in
Overall height to SAT antenna top 1,619 mm 63.7 in
Front track 1,625 mm 64.0 in
Rear track 1,620 mm 63.8 in
Wheelbase 2,800 mm 110.2 in
Gross vehicle weight rating Refer to the
“F.M.V.S.S./
C.M.V.S.S.
certification label”
on the center pillar
between the driver's
side front and rear
doors.
Gross axle weight rating
Front
Rear
Technical and consumer information10-9

SECURING THE LOAD
There are luggage hooks located in the cargo
area as shown. The hooks can be used to
secure cargo with ropes or other types of
straps.
When securing items using luggage hooks
located on the side finisher do not apply a
load over more than 6.5 lbs. (29 N) to a single
hook.
The luggage hooks that are located on the
floor should have loads less than 110 lbs.
(490 N) to a single hook.
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 colli-
sion, unsecured cargo could cause per-
sonal 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 ve-
hicle can break, tire damage could occur,
or it can change the way your vehicle
handles. This could result in loss of con-
trol 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 with
ropes or straps to help prevent it
from sliding or shifting. Do not
place cargo higher than the seat-
backs. In a sudden stop or colli-
sion, 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.
LTI2556
Cargo area luggage hooks
10-18Technical and consumer information

Seat beltChild safety................ .1-19Infants and small children.....1-19, 1-20Injured person................1-15Larger children...............1-20Precautions on seat belt usage......1-11Pregnant women..............1-14Seat belt extenders............1-18Seat belt maintenance...........1-18Seat belts.............. .1-11, 7-6Three-point type with retractor.....1-15Seat belt extenders..............1-18Seat belt warning light........1-14, 2-12Seatback pockets.............. .2-58Seats
Adjustment................. .1-2Armrests................... .1-5Front seats..................1-2Heated seats................2-49Rear bench seat...............1-4Seats/floor mats............... .7-5Security indicator light............2-12Security system
(INFINITI vehicle immobilizer system),
engine start
..........2-34, 3-4, 5-16Security systemsVehicle security system..........2-33Self-adjusting brakes............ .8-19Service manual order form.........10-26Servicing air conditioner...........4-41Spark plug replacement...........8-15Spark plugs.................. .8-15
Specifications.................10-8Speedometer...............2-4, 2-5SRS warning label...............1-61Stability control...............5-141Standard maintenance.............9-9Starting
Before starting the engine........5-16Jump starting............ .6-5, 8-14Precautions when starting and
driving................ .5-4, 5-10Push starting.................6-7Starting the engine.............5-16Starting the engine............. .5-16Steering
Power steering system.....5-136, 5-137Steering Assist switch........... .2-51Steering wheel................ .3-32Stop light................... .8-25Storage.................... .2-57Storage tray..............2-58, 2-59Sun visors................... .3-33Sunglasses case................2-60Sunglasses holder...............2-60Sunroof................. .2-67, 7-5Supplemental air bag warning labels. . . .1-61Supplemental air bag warning
light.................. .1-62, 2-12Supplemental front impact air bag
system.................... .1-49Supplemental restraint system
Information and warning labels.....1-61Precautions on supplemental restraint
system................... .1-41
Supplemental restraint system
(Supplemental air bag system)........1-41Switch
Autolight switch............. .2-41Automatic power window switch. . . .2-67Fog light switch..............2-47Hazard warning flasher switch......6-2Headlight aiming control.........2-45Headlight and turn signal switch. . . .2-40Instrument brightness control......2-46Power door lock switch...........3-5Rear window wiper and washer
switches.................. .2-38Turn signal switch.............2-46
T
Tachometer.................. .2-6Temperature gauge
Engine coolant temperature gauge. . . .2-6Theft(INFINITI vehicle immobilizer system),
engine start
..........2-34, 3-4, 5-16Three-way catalyst.............. .5-4Tire
Flat tire................... .6-3Tire and Loading Information label. .10-12Tire chains..................8-37Tire pressure................8-27Tire rotation................8-38Types of tires................8-35
11-6