tires INFINITI QX30 2018 Service Manual

•Tires degrade with age and use. Have
tires, including the spare, over 6 years
old checked by a qualified technician be-
cause some tire damage may not be ob-
vious. Replace the tires as necessary to
prevent tire failure and possible per-
sonal injury.
•Improper service of the spare tire may
result in serious personal injury. If it is
necessary to repair the spare tire, it is
recommended that you visit an INFINITI
retailer for this service.
•For additional information regarding
tires, refer to “Important Tire Safety In-
formation” (US) or “Tire Safety Infor-
mation” (Canada) in the Warranty In-
formation Booklet.
Tires should be periodically inspected for
wear, cracking, bulging or objects caught in
the tread. If excessive wear, cracks, bulging
or deep cuts are found, the tire should be
replaced immediately.
The original tires have a built-in tread wear
indicator. When the wear indicator is visible,
the tire should be replaced.
Improper servicing of a tire may result in se-
rious personal injury. If it is necessary to re-pair a tire, it is recommended you contact an
INFINITI retailer.
TIRE ROTATION
INFINITI recommends rotating the tires ev-
ery 5,000 miles (8,000 km).
For additional information on tire replacing
procedures, refer to "Flat tire".As soon as
possible, tighten the wheel nuts to the speci-
fied torque with a torque wrench.
Wheel nut tightening torque: 96 ft-lb
(130 N·m)
The wheel nuts must be kept tightened 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 ad-
just the tire pressure.
•Do not include the spare tire in the tire
rotation.
•For additional information regarding
tires, refer to "Important Tire Safety
Information" (US) or "Tire Safety Infor-
mation" in the Warranty Information
Booklet.
REPLACING WHEELS AND TIRES
WARNING
Do not install a deformed wheel or tire even
if it has been repaired. Such wheels or tires
could have structural damage and could
fail without warning.
When replacing a tire, use the same size,
speed rating and load carrying capacity as
originally equipped. (See "Wheels and Tires"
for recommended types and sizes of tires and
wheels.)
If the wheels are changed for any reason,
always replace with wheels which have the
same offset dimension. Wheels of a different
offset could cause early tire wear, possibly
degraded vehicle handling characteristics
and/or interference with the brake discs/
drums. Such interference can lead to de-
creased braking efficiency and/or early brake
pad/shoe wear.
Confirm the following for the TPMS:
WARNING
•The use of tires other than those recom-
mended or the mixed use of tires of dif-
ferent brands, construction (bias, bias-
belted or radial), or tread patterns can
8-34Do-it-yourself

adversely affect the ride, braking, han-
dling, VDC system, ground clearance,
body-to-tire clearance, tire chain clear-
ance, speedometer calibration, head-
light aim and bumper height. Some of
these effects may lead to accidents and
could result in serious personal injury.
•For 2WD models, if your vehicle was
originally equipped with 4 tires that
were the same size and you are only re-
placing 2 of the 4 tires, install the new
tires on the rear axle. Placing new tires
on the front axle may cause loss of ve-
hicle control in some driving conditions
and cause an accident and personal in-
jury.
•If the wheels are changed for any rea-
son, always replace with wheels which
have the same offset dimension. Wheels
of a different offset could cause prema-
ture tire wear, degrade vehicle handling
characteristics, affect the VDC system
and/or interference with the brake
discs. Such interference can lead to de-
creased braking efficiency and/or early
brake pad wear. For additional informa-
tion on wheel offset dimensions, refer to
"Wheels and Tires".
•When a replacement tire is mounted or a
wheel is replaced, the TPMS will not
function and the low tire pressure warn-
ing light will flash for approximately 1
minute. The light will remain on after 1
minute. Contact an 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.
•The TPMS sensor may be damaged if it
is not handled correctly. Be careful when
handling the TPMS sensor.
•When replacing the TPMS sensor, the ID
registration may be required. It is rec-
ommended that you visit an INFINITI re-
tailer for ID registration.
•Do not use a valve stem cap that is not
specified by INFINITI. The valve stem
cap may become stuck.
•Be sure that the valve stem caps are cor-
rectly fitted. Otherwise the valve may
be clogged up with dirt and cause a mal-
function or loss of pressure.
•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 tires 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 In-
formation Booklet.
Care of wheels
•Wash the wheels when washing the ve-
hicle to maintain their appearance.
•Clean the inner side of the wheels when
the wheel is changed or the underside of
the vehicle is washed.
•Do not use abrasive cleaners when wash-
ing the wheels.
•Inspect wheel rims regularly for dents or
corrosion. Such damage may cause loss of
pressure or poor seal at the tire bead.
•INFINITI recommends waxing the road
wheels to protect against road salt in ar-
eas where it is used during winter.
Do-it-yourself8-35

WHEEL BALANCE
Unbalanced wheels may affect vehicle han-
dling and tire life. Even with regular use,
wheels can get out of balance. Therefore,
they should be balanced as required.
Wheel balance service should be performed
with the wheels off the vehicle. Spin balanc-
ing 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 Warranty Information Booklet.
8-36Do-it-yourself

primary latch is released. When driving in ar-
eas using road salt or other corrosive materi-
als, check lubrication frequently.
Lights*:
Clean the headlights on a regular basis. Make
sure that the headlights, stop lights, tail lights,
turn signal lights, and other lights are all op-
erating properly and installed securely. Also
check the aim of the headlights.
Road wheel nuts (lug nuts)*:
When checking the tires, make sure no wheel
nuts are missing, and check for any loose
wheel nuts. Tighten if necessary.
Tire rotation*:
Tires should be rotated every 5,000 miles
(8,000 km). Tires marked with directional
indicators can only be rotated between front
and rear. Make sure that the directional indi-
cators point in the direction of wheel rotation
after the tire rotation is completed.
Tires*:
Check the pressure with a gauge often and
always prior to long distance trips. Adjust the
pressure in all tires to the pressure specified.
Check carefully for damage, cuts or excessive
wear.Tire Pressure Monitoring System (TPMS)
transmitter components:
Replace the TPMS transmitter grommet seal,
valve core and cap when the tires are re-
placed due to wear or age.
Wheel alignment and balance:
If the vehicle should pull to either side while
driving on a straight and level road, or if you
detect uneven or abnormal tire wear, there
may be a need for wheel alignment.
If the steering wheel or seat vibrates at nor-
mal highway speeds, wheel balancing may be
needed.
For additional information regarding tires, re-
fer to “Important Tire Safety Information”
(US) or “Tire Safety Information” (Canada) in
the INFINITI Warranty Information Booklet.
Windshield:
Clean the windshield on a regular basis.
Check the windshield at least every six
months for cracks or other damage. Have a
damaged windshield repaired by a qualified
repair facility.
Wiper blades*:
Check for cracks or wear if not functioning
correctly. Replace as necessary.Inside the vehicle
The maintenance items listed here should be
checked on a regular basis, such as when
performing scheduled maintenance, cleaning
the vehicle, etc.
Accelerator pedal:
Check the pedal for smooth operation and
make sure that the pedal does not catch or
require uneven effort. Keep the floor mat
away from the pedal.
Automatic transmission P (Park) mecha-
nism:
On a fairly steep hill, check that your vehicle is
held securely when P (Park) has been acti-
vated, without applying any brakes.
Brake pedal*:
Check the pedal for smooth operation. If the
brake pedal suddenly goes down further than
normal, the pedal feels spongy or the vehicle
seems to take longer to stop, have your ve-
hicle checked immediately. It is recommended
you visit an INFINITI retailer for this service.
Keep the floor mat away from the pedal.
Brakes:
Check that the brakes do not pull the vehicle
to one side when applied.
Maintenance and Schedules9-3

Engine oil and oil filter:
Replace engine oil and oil filter at the speci-
fied intervals. For recommended oil grade
and viscosity refer to "Recommended fluids/
lubricants and capacities".
Fuel filter:
Replace the fuel filter and drain the water at
the specified intervals.
Fuel lines*:
Check the fuel hoses, piping and connections
for leaks, looseness, or deterioration. Tighten
connections or replace parts as necessary.
Spark plugs:
Replace at specified intervals. Install new
plugs of the type as originally 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 dam-
aged parts immediately.
Brake pads, rotors, drums, & linings:
Check for wear, deterioration and fluid leaks.
Replace any deteriorated or damaged parts
immediately.
Exhaust system:
Visually inspect the exhaust pipes, muffler
and hangers for leaks, cracks, deterioration,
and damage. Tighten connections or replace
parts as necessary.
In-cabin microfilter:
Replace at specified intervals. When driving
for prolonged periods in dusty conditions, re-
place the filter more frequently.
Propeller shaft(s):
Check for damage, looseness, and grease
leakage. (4WD/AWD).Steering gear and linkage, axle and suspen-
sion parts, drive shaft boots:
Check for damage, looseness, and leakage of
oil or grease.
Tire rotation:
Tires should be rotated every 5,000 miles
(8,000 km) according to the instructions un-
der "Tire rotation*" earlier in this section.
When rotating tires, check for damage and
uneven wear. Replace if necessary.
Transmission fluid/oil, differential oil, trans-
fer case oil:
Visually inspect for signs of leakage at speci-
fied intervals.
9-6Maintenance and Schedules

Information about service
Resetting the maintenance service interval
display:
CAUTION
If the maintenance service interval display
has been inadvertently reset, this setting
can be corrected at an INFINITI retailer.
Have service work carried out as described
in the Maintenance Schedule. This may
otherwise lead to increased wear and dam-
age to the major assemblies or the vehicle.
An INFINITI retailer will reset the mainte-
nance service interval display after the service
work has been carried out. You can also ob-
tain further information on maintenance
work, for example.Special service requirements:
The prescribed service interval is based on
normal operation of the vehicle. Service work
will need to be performed more often if the
vehicle is operated under arduous conditions
or increased loads, for example:
•Regular city driving with frequent interme-
diate stops
•If the vehicle is primarily used to travel
short distance
•For frequent operation in mountainous
terrain or on poor road surfaces
•If the engine is often left idling for long
periods
In these or similar operating conditions, have,
for example, the air filter, engine oil and oil
filter changed more frequently. The tires must
be checked more frequently if the vehicle is
operated under increased loads. Further in-
formation can be obtained at an INFINITI
retailer.
9-8Maintenance and Schedules

10 Technical information
Recommended fluids/lubricants and capacities . .10-2
Fuel recommendation................10-3
Engine oil and oil filter recommendations. . . .10-5
Air conditioner system refrigerant and oil
recommendations...................10-6
Engine specifications...................10-7
Wheels and Tires.....................10-8
Dimensions.........................10-8
When traveling or registering in another
country...........................10-9
Vehicle identification...................10-9
Vehicle identification number (VIN) plate. . . .10-9
Vehicle identification number (chassis
number)........................10-10
Engine serial number................10-10
F.M.V.S.S./C.M.V.S.S. Certification label . . .10-10
Emission control information label.......10-11
Tire and loading information label........10-11
Air conditioner specification label........10-11Installing front license plate..............10-12
Vehicle loading information..............10-13
TERMS........................10-13
Vehicle load capacity................10-14
Loading tips......................10-15
Measurement of weights.............10-15
Trailer towing......................10-15
Uniform tire quality grading..............10-16
Treadwear......................10-16
Traction AA, A, B and C..............10-16
Temperature A, B and C..............10-16
Emission control system warranty..........10-17
Reporting safety defects................10-17
Readiness for inspection/maintenance (I/M)
test.............................10-18
Event data recorders (EDR) (if so equipped) . . .10-19
Owner's manual/service manual order
information........................10-19

GT and Sport models:
Item Offset in (mm) Size
Road wheel 1.50 (38) 6.5J x 17
1.81 (46) 7.0J x 18
1.71 (43.5) 8.0J x 19
Tire size 215/60 R17 96V
235/50 R18 97V*
235/50 R18 97H* **
235/45 R19 95V*
* : Use of snow chains NOT permitted.
**: US only.
All Road models:
Item Offset in (mm) Size
Road wheel 1.61 (41) 6.5J x 17
(steel)
1.61 (41) 7.0J x 18
(alloy)
Tire size 215/60 R17 96V
235/50 R18 97V*
235/50 R18 97H* **
* : Use of snow chains NOT permitted.
**: US only.
Dimension Model in (mm)
Overall length 174.2 (4425)
Overall width (incl. mirrors) 82.0 (2083)
Overall height GT without roof rails 58.9 (1495)
GT with roof rails 59.5 (1510)
Sport without roof rails 58.1 (1475)
Sport with roof rails 58.7 (1490)
Allroad without roof rails 58.7 (1515)
Allroad with roof rails 61.2 (1530)
Front track GT 17” wheels 61.9 (1572)
GT 18” wheels 61.3 (1556)
GT 19” wheels 61.5 (1561)
Sport 17” wheels 62 (1574)
Sport 19” wheels 61.5 (1563)
Allroad 17” wheels 61.7 (1566)
Allroad 18” wheels 61.5 (1561)
Rear track GT 17” wheels 61.9 (1573)
GT 18” wheels 61.2 (1555)
GT 19” wheels 61.7 (1566)
Sport 17” wheels 62.2 (1580)
Sport 19” wheels 61.7 (1567)
Allroad 17” wheels 62.0 (1574)
Allroad 18” wheels 61.7 (1566)
Wheelbase 106.3 (2700)
WHEELS AND TIRES DIMENSIONS
10-8Technical information

Before driving a loaded vehicle, confirm that
you do not exceed the Gross Vehicle Weight
Rating (GVWR) or the Gross Axle Weight
Rating (GAWR) for your vehicle. (See "Mea-
surement of weights" later in this section.)
Also check tires for proper inflation pres-
sures. See the Tire and Loading Information
label.
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 oc-
cur, or it can change the way your ve-
hicle handles. This could result in loss of
control and cause personal injury.
•Overloading could not only shorten the
life of your vehicle and the tires, but also
could cause unsafe vehicle handling and
longer braking distances. This may
cause a premature tire failure which
could result in a serious accident and
personal injury. Failures caused by over-
loading are not covered by the vehicle's
warranty.
MEASUREMENT OF WEIGHTS
Secure loose items to prevent weight shifts
that could affect the balance of your vehicle.
When the vehicle is loaded, drive to a scale
and weigh the front and the rear wheels
separately to determine axle loads. Individual
axle loads should not exceed either of the
gross axle weight ratings (GAWR). The total
of the axle loads should not exceed the gross
vehicle weight rating (GVWR). These ratings
are given on the vehicle certification label. If
weight ratings are exceeded, move or remove
items to bring all weights below the ratings.Your vehicle was designed to be used to carry
passengers and luggage
CAUTION
Do not tow a trailer with your vehicle.
TRAILER TOWING
Technical information10-15

DOT (Department Of Transportation) Qual-
ity Grades: All passenger car tires must con-
form to federal safety requirements in addi-
tion to these grades.
Quality grades can be found where appli-
cable on the tire sidewall between tread
shoulder and maximum section width. For
example:
Treadwear 200 Traction AA Temperature A
TREADWEAR
The treadwear grade is a comparative rating
based on the wear rate of the tire when
tested under controlled conditions on a
specified government test course. For ex-
ample, a tire graded 150 would wear one and
one-half (1 1/2) times as well on the govern-
ment course as a tire graded 100. The rela-
tive performance of tires depends upon ac-
tual conditions of their use, however, and
may depart significantly from the norm due
to variations in driving habits, service prac-
tices and differences in road characteristics
and climate.
TRACTION AA, A, B AND C
The traction grades, from highest to lowest,
are AA, A, B and C. Those grades represent
the tire’s ability to stop on wet pavement as
measured under controlled conditions on
specified government test surfaces of as-
phalt and concrete. A tire marked C may have
poor traction performance.
WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.
TEMPERATURE A, B AND C
The temperature grades A (the highest), B,
and C, representing the tire’s resistance to
the generation of heat and its ability to dissi-
pate heat when tested under controlled con-
ditions on a specified indoor laboratory test
wheel. Sustained high temperature can cause
the material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudden tire failure. The grade C
corresponds to a level of performance which
all passenger car tires must meet under the
Federal Motor Vehicle Safety Standard No.
109. Grades B and A represent higher levels
of performance on the laboratory test wheel
than the minimum required by law.
WARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, under-
inflation, or excessive loading, either sepa-
rately or in combination, can cause heat
build-up and possible tire failure.
UNIFORM TIRE QUALITY GRADING
10-16Technical information