tire type INFINITI Q70 2018 User Guide

8-38Do-it-yourself
SDI1663
Tire wear and damage
1.Wear indicator
2.Wear indicator location mark.
The locations are shown by
“
”, “TWI”, etc. depending on
tire types.
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 perso-
nal injury. If it is necessary to
repair the spare tire, it is re-
commended you visit an
INFINITI retailer for this ser-
vice.
. For additional information re-
garding tires, refer to “Impor-
tant Tire Safety Information”
(US) or “Tire Safety Informa-
tion” (Canada) in the Warranty
Information Booklet.
Replacing wheels and tires
When replacing a tire, use the same size,
tread design, speed rating and load carrying
capacity as originally equipped. (See “Speci-
fications” (P.10-11) 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, construc-
tion (bias, bias-belted or radial), or
tread patterns can adversely affect
the ride, braking, handling, ground
clearance, body-to-tire clearance,
tire chain clearance, speedometer
calibration, headlight aim and bum-
per height. Some of these effects may
lead to accidents and could result in
serious personal injury.
. For Two-Wheel Drive (2WD) models,
if your vehicle was originally
equipped with 4 tires that were the
same size and you are only replacing
2 of the 4 tires, install the new tires
on the rear axle. Placing new tires on
the front axle may cause loss of
vehicle control in some driving condi-
tions and cause an accident and
personal injury.

.If the wheels are changed for any
reason, always replace with wheels
which have the same off-set dimen-
sion. Wheels of a different off-set
could cause premature tire wear,
degrade vehicle handling character-
istics and/or interference with the
brake discs/drums. Such interference
can lead to decreased braking effi-
ciency and/or early brake pad/shoe
wear. See “Wheels and tires” (P.10-
12) for wheel off-set dimensions.
. Since the spare tire is not equipped
with the TPMS, 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. Have
your tires replaced and/or TPMS
system reset as soon as possible. It
is recommended you visit an INFINITI
retailer for these services.
. Replacing tires with those not origin-
ally 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 recommended you visit an INFINITI
retailer 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
correctly fitted. Otherwise the valve
may be clogged up with dirt and
cause a malfunction or loss of pres-
sure.
. Do not install a damaged or deformed
wheel or tire even if it has been
repaired. Such wheels or tires could
have structural 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
Information” (Canada) in the War-
ranty Information Booklet.Intelligent 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 differ-
ence between tires on the front and
rear axles which will cause excessive
tire wear and may damage the trans-
mission, transfer case and differential
gears.
. ONLY use spare tires specified for
the Intelligent 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
you visit an INFINITI retailer for this service.
Wheel balance
Unbalanced wheels may affect vehicle hand-
ling and tire life. Even with regular use,
wheels can get out of balance. Therefore,
Do-it-yourself8-39

8-40Do-it-yourself
they should be balanced as required.
Wheel balance service should be performed
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 Booklet.
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)
Since the spare tire is not equipped with the
TPMS, when a spare tire is mounted (TEM-
PORARY 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 possi-
ble tire or differential damage.
. Drive carefully while the TEMPOR-
ARY 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 pressure for stan-
dard tires, as indicated on the Tire
and Loading Information label. For
Tire and Loading Information label
location, see “Tire and loading infor-
mation label” (P.10-16).
. 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.
CAUTION
.Do not use tire chains on a TEM-
PORARY 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 re-
duced. 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.

10-12Technical and consumer information
WHEELS AND TIRES
Road wheel
TypeSize Offset in (mm)
Conventional 18 × 8J
1.69 (43)
20 × 9J 1.69 (43)
Spare 17 × 4T
18 × 4T 1.18 (30)
0 (0)
Tire
Type
Size Pressure PSI (kPa) [Cold]
Conventional P245/50R18
33 (230)
245/40R20
Spare (T-type) T165/80D17
T155/80D18 60 (420)

11-6
RecordersEvent data .................................................... 10-25
Registering in another country ..................... 10-14
Remote keyless entry system .......................... 3-14
Reporting safety defects ................................ 10-24
Rise-up and build-up ........................................ 5-124
Roadside assistance program ............................. 6-2
Rollover ..................................................................... 5-7
Roof Moonroof ......................................................... 2-54
S
SafetyChild seat belts ............................................... 1-17
Reporting safety defects .......................... 10-24
Seat adjustment Front power seat adjustment ....................... 1-3
Front seats ......................................................... 1-3
Seat belt(s) Child safety ..................................................... 1-17
Infants ............................................................... 1-17
Injured persons ............................................... 1-12
Larger children ............................................... 1-18
Precautions on seat belt usage ................. 1-10
Pre-crash seat belts with
comfort function ............................................ 1-12
Pregnant women ........................................... 1-12
Seat belt cleaning ............................................. 7-6
Seat belt extenders ....................................... 1-16
Seat belt maintenance ................................. 1-16
Seat belt warning light and chime ............ 2-15 Seat belts ......................................................... 1-10
Seat belts with pretensioners .................... 1-50
Shoulder belt height adjustment ............... 1-15
Small children .................................................. 1-18
Three-point type ............................................ 1-13
Seat(s) Climate controlled seats .............................. 2-43
Driver-side memory ...................................... 3-28
Heated seats ................................................... 2-41
Seats .................................................................... 1-2
Security system Vehicle security system ................................ 2-29
Security system (INFINITI Vehicle
Immobilizer System) Engine start ..................................................... 2-31
Servicing air conditioner (See automatic
climate control) .................................................... 4-32
Servicing climate control ................................... 4-37
Shift lever
Shift lock release ........................................... 5-18
Shift lock release, Transmission ...................... 5-18
Shifting
Automatic transmission ............................... 5-15
Shoulder belt height adjustment ...................... 1-15
SNOW mode ......................................................... 5-20
Spare tire ............................................................. 10-12
Spark plugs ............................................................ 8-19
Speedometer ............................................................ 2-7
SPORT mode ........................................................ 5-20
Standard maintenance .......................................... 9-7
STANDARD mode ............................................... 5-20 Starting
Before starting the engine .......................... 5-13
Jump starting .................................................. 8-17
Precautions when starting and driving ..... 5-4
Push starting ................................................... 6-11
Starting the engine ....................................... 5-14
Status light, Front passenger air bag ............ 1-46
Steering Heated steering wheel ................................ 2-40
Power steering fluid ..................................... 8-14
Power steering system ............................. 5-120
Steering lock release malfunction
indicator (if so equipped) ............................. 2-22
Tilt/telescopic steering ................................ 3-24
Steering lock (if so equipped) ............................ 5-11
Storage ................................................................... 2-47
Storage box ........................................................... 2-50
Sun visors ............................................................... 3-25
Sunglasses holder ................................................ 2-48
Sunshade (rear) .................................................... 2-55
Supplemental air bag warning labels .............. 1-51
Supplemental air bag warning light .... 1-52, 2-16
Supplemental restraint system ........................ 1-38 Precautions on supplemental
restraint system ............................................. 1-38
Switch Autolight switch ............................................. 2-35
Fog light switch ............................................. 2-39
Hazard warning flasher switch .................... 6-2
Headlight switch ............................................ 2-34
Ignition switch ................................................ 5-15

Power door lock switch ................................. 3-5
Rear window and outside mirror
defroster switch ............................................. 2-34
Turn signal switch ......................................... 2-39
Vehicle Dynamic Control (VDC)
off switch ........................................................ 2-44
Warning systems switch ............................ 2-44
T
Tachometer ............................................................. 2-8
Temperature gaugeEngine coolant temperature gauge ............ 2-8
Theft (INFINITI Vehicle Immobilizer System) Engine start ..................................................... 2-31
Three-way catalyst ................................................ 5-5
Tilt/telescopic steering ...................................... 3-24
“TIMER” indicator ............................................... 2-23
Tire
Tire replacement indicator .......................... 2-25
Tire rotation .................................................... 8-37
Tire pressure
Low tire pressure warning light ................ 2-14
Tires Flat tire ............................................................... 6-3
Low tire pressure
warning system ........................... 5-5, 6-3, 8-30
Spare tire ........................................................ 8-40
Tire and Loading
information label ............................. 8-32, 10-16
Tire chains ........................................................ 8-36
Tire dressing ...................................................... 7-4 Tire pressure .................................................. 8-30
Tire Pressure Monitoring
System (TPMS) ........................... 5-5, 6-3, 8-30
Types of tires .................................................. 8-36
Uniform tire quality grading .................... 10-22
Wheel/tire size ............................................ 10-12
Wheels and tires ........................................... 8-30
Towing Flat towing ................................................... 10-22
Tow truck towing .......................................... 6-13
Towing a trailer ........................................... 10-22
TPMS
Tire Pressure
Monitoring System .................... 5-5, 6-3, 8-30
Trailer towing .................................................... 10-22
Transceiver
HomeLink
®Universal Transceiver ........... 2-60
Transmission
Automatic Transmission Fluid (ATF) ....... 8-13
Driving with automatic transmission ....... 5-15
Transmission shift lever lock release ....... 5-18
Transmitter (See remote keyless
entry system) ........................................................ 3-14
Traveling or registering in
another country ................................................ 10-14
Trip computer ....................................................... 2-27
Trip odometer ....................................................... 2-27
Trunk
Interior trunk lid release .............................. 3-21
Light .................................................................. 2-59
Pass-through ..................................................... 1-5 Trunk hooks .................................................... 2-51
Trunk lid ........................................................... 3-18
Trunk lid release switch ............................... 3-18
Trunk open request switch ......................... 3-19
Trunk release power cancel switch ......... 3-20
Turn signal switch ............................................... 2-39
U
Underbody cleaning ............................................... 7-3
Uniform tire quality grading .......................... 10-22
V
Vanity mirror ......................................................... 3-28
Vanity mirror lights ............................................. 2-59
Variable voltage control system ..................... 8-18
Vehicle
Dimensions ................................................... 10-13
Recovery (freeing a stuck vehicle) ............ 6-15
Vehicle Dynamic Control (VDC)
off switch ........................................................ 2-44
Vehicle dynamic control
(VDC) system ................................................ 5-123
Vehicle dynamic control (VDC)
warning light ................................................... 2-16
Vehicle identification number (VIN) ............ 10-14
Vehicle information display .............................. 2-20
Vehicle loading information ........................... 10-18
Vehicle security system ...................................... 2-29
Ventilators ............................................................. 4-32
11-7