2014 INFINITI Q50 tire size

.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, radial or run-flat), or tread
patterns can adversely affect the ride,
braking, handling, 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 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 conditions 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 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
Maintenance and do-it-yourself8-39

8-40Maintenance and do-it-yourself
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.
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 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
Intelligent 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.
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) (if so equipped)
When a spare tire is mounted (TEMPORARY
USE ONLY), the Tire Pressure Monitoring
System (TPMS) will not function.
Observe the following precautions if the
TEMPORARY USE ONLY spare tire must be
used, otherwise your vehicle could be
damaged or involved in an accident.
WARNING
. The TEMPORARY USE ONLY 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

WHEELS AND TIRES
Road wheel
TypeSize Offset in (mm)
Conventional 17
67.5J 1.77 (45)
196 8.5J 1.97 (50)
Spare (if so equipped) 1864T 0 (0)
Tire
Type
Size Pressure PSI (kPa) [Cold]
Conventional P225/55RF17 95V
35 (240)
P245/40RF19 94V
245/40RF19 94W
Spare (T-type) (if so equipped) T145/70R18 107M 60 (420)
Technical and consumer information9-9

10-6
Three-point type .......................................... 1-15
Seat(s) Driver-side memory ...................................... 3-29
Heated seats ................................................. 1-5
Seats ............................................................. 1-2
Security system Vehicle security system ................................ 2-31
Security system (INFINITI Vehicle Immobilizer
System) Engine start ................................................. 2-32
Shift lever Shift lock release ......................................... 5-18
Shift lock release, Transmission ........................ 5-18
Shifting Automatic transmission ............................... 5-15
Shoulder belt height adjustment ....................... 1-20
SNOW mode ..................................................... 5-22
Spare tire ........................................................... 9-9
Spark plugs ...................................................... 8-18
Speedometer ...................................................... 2-7
SPORT mode ..................................................... 5-22
STANDARD mode ............................................... 5-21
Starting
Before starting the engine ........................... 5-13
Jump starting ............................................... 8-16
Precautions when starting and driving ........... 5-3
Push starting ............................................... 6-11
Starting the engine ...................................... 5-14
Status light, Front passenger air bag ................ 1-49
Steering Direct Adaptive Steering ............................ 5-104 Power steering fluid ..................................... 8-13
Power steering system ............................... 5-104
Tilt/telescopic steering ................................. 3-24
Storage ............................................................. 2-45
Storage box ...................................................... 2-48
Sun visors ........................................................ 3-25
Sunglasses holder ............................................ 2-46
Supplemental air bag warning labels ................ 1-55
Supplemental air bag warning light ......... 1-55, 2-16
Supplemental restraint system .......................... 1-42
Precautions on supplemental
restraint system ........................................... 1-42
Switch
Autolight switch ........................................... 2-37
Fog light switch ........................................... 2-42
Hazard warning flasher switch ....................... 6-2
Headlight switch .......................................... 2-36
Ignition switch ............................................. 5-15
Power door lock switch .................................. 3-5
Rear window and outside mirror
defroster switch ........................................... 2-36
Turn signal switch ........................................ 2-42
Vehicle Dynamic Control (VDC) off switch ..... 2-43
T
Tachometer ......................................................... 2-8
Temperature gauge
Engine coolant temperature gauge ................. 2-8
Theft (INFINITI Vehicle Immobilizer System) Engine start ................................................. 2-32
Thigh extension .................................................. 1-5 Three-way catalyst .............................................. 5-4
Tilt/telescopic steering ...................................... 3-24
Tire
Flat Tire - Visit dealer warning ..................... 2-23
Run-flat tires .................................................. 6-4
Tire replacement indicator ............................ 2-26
Tire rotation ................................................. 8-38
Tire pressure Low tire pressure warning light .................... 2-14
Tire Pressure Low - Add Air warning .................. 2-23
Tires Flat tire .......................................................... 6-3
Low tire pressure warning system ... 5-4, 6-3, 8-29
Run-flat tires ................................................ 8-36
Spare tire .................................................... 8-40
Tire and Loading information label ...... 8-31, 9-13
Tire chains ................................................... 8-37
Tire dressing .................................................. 7-4
Tire pressure................................................ 8-29
Tire Pressure Monitoring
System (TPMS) .............................. 5-4, 6-3, 8-29
Types of tires ............................................... 8-35
Uniform tire quality grading ......................... 9-19
Wheel/tire size .............................................. 9-9
Wheels and tires .......................................... 8-29
Towing Flat towing ................................................... 9-19
Tow truck towing .......................................... 6-13
Towing a trailer ............................................ 9-19
TPMS Tire Pressure Monitoring System ... 5-4, 6-3, 8-29

TPMS, Tire pressure monitoring systemTPMS with Tire Inflation Indicator................... 5-7
Trailer towing .................................................... 9-19
Transceiver
HomeLink
®Universal Transceiver ................. 2-56
Transmission
Automatic transmission fluid (ATF) ............... 8-12
Driving with automatic transmission ............ 5-15
Transmission shift lever lock release ............ 5-18
Transmitter (See remote keyless entry system) ... 3-14
Traveling or registering your vehicle in
another country ................................................ 9-11
Trip computer ................................................... 2-28
Trip odometer ................................................... 2-28
Trunk Interior trunk lid release .............................. 3-21
Light ............................................................ 2-56
Pass-through ................................................. 1-7
Trunk hooks ................................................. 2-48
Trunk lid ...................................................... 3-19
Trunk lid release switch ............................... 3-19
Trunk open request switch ........................... 3-19
Trunk release power cancel switch ............... 3-20
Turn signal switch ............................................. 2-42
U
Underbody cleaning ............................................ 7-3
Uniform tire quality grading .............................. 9-19
V
Vanity mirror ..................................................... 3-29
Vanity mirror lights ........................................... 2-55
Variable voltage control system ........................ 8-17
Vehicle
Dimensions .................................................. 9-10
Recovery (freeing a stuck vehicle) ................ 6-16
Vehicle Dynamic Control (VDC) off switch ..... 2-43
Vehicle Dynamic Control (VDC) system ....... 5-108
Vehicle Dynamic Control (VDC)
warning light ............................................... 2-17
Vehicle identification number (VIN) ................... 9-11
Vehicle information display ............................... 2-20
Vehicle loading information .............................. 9-16
Vehicle security system ..................................... 2-31
Ventilators .......................................................... 4-2
W
Warning
Blind Spot Warning (BSW) system ................ 5-38
Flat Tire - Visit dealer warning ..................... 2-23
Hazard warning flasher switch ....................... 6-2
Indicators for operation (vehicle
information display) ..................................... 2-22
Lane Departure Warning (LDW) system ......... 5-31
Predictive forward collision
warning system ........................................... 5-94
Tire Pressure Monitoring
System (TPMS) .............................. 5-4, 6-3, 8-29
Vehicle information display .......................... 2-20 Warning/indicator lights and
audible reminders ........................................ 2-12
Warning labels Air bag warning labels ................................. 1-55
Warning light Air bag warning light ......................... 1-55, 2-16
Anti-lock Braking System (ABS)
warning light ............................................... 2-12
Brake warning light ...................................... 2-13
Forward emergency braking system
warning light ............................................... 2-13
Low fuel warning light ................................. 2-14
Low tire pressure warning light .................... 2-14
Power steering warning light ........................ 2-16
Seat belt warning light and chime ............... 2-16
Warranty
Emission control system warranty ................ 9-20
Washer switch Windshield wiper and washer switch ........... 2-33
Washing ............................................................. 7-2
Waxing ............................................................... 7-2
Wheel/tire size ................................................... 9-9
Wheels and tires ............................................... 8-29 Care of wheels ............................................... 7-3
Cleaning aluminum alloy wheels .................... 7-3
Cleaning bright wheels .................................. 7-4
Window washer fluid ........................................ 8-14
Window(s)
Cleaning ........................................................ 7-3
Power windows ............................................ 2-49
Windshield wiper and washer switch ................ 2-33
10-7