size INFINITI QX50 2021 Owner's Guide

Replacing wheels and tires
When replacing a tire, use the same size,
tread design, speed rating and load carrying
capacity as originally equipped. For addi-
tional information, see “Wheels and tires”
(P. 10-9).
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
adversely affect the ride, braking, han-
dling, VDC system, ground clearance,
body-to-tire clearance, tire chain clear-
ance, speedometer calibration, headlight
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 four tires that
were the same size and you are only re-
placing two of the four 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 dimension. Wheels of a
different off-set could cause premature
tire wear, degrade vehicle handling char-
acteristics, 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 off-set dimensions, see
“Wheels and tires” (P. 10-9).
• When replacing a wheel without the
TPMS, such as the spare tire, the TPMS
will not function and the low tire pres-
sure warning light will flash for approxi-
mately 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 that you
visit an INFINITI retailer for this service.
• 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 recom-
mended 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
recommended.
• 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.
8-38Do-it-yourself

WHEELS AND TIRES
Wheel typeOffset in (mm) Size
Aluminum 1.54 (39)19 x 7.5J
1.73 (44) 20 x 8.5J
Tire size P235/55RF19
P255/45RF20
Spare tire Not equipped
DIMENSIONS AND WEIGHTS
Overall lengthin (mm) 184.8 (4,693)
Overall width in (mm) 74.9 (1,903)
Overall height in (mm) 66.1 (1,679)
Front track 19 inch wheel in (mm) 64.4 (1,635)
20 inch wheel in (mm) 64.0 (1,625)
Rear track 19 inch wheel in (mm) 64.2 (1,630)
20 inch wheel in (mm) 63.8 (1,620)
Wheelbase in (mm) 110.2 (2,800)
Gross vehicle weight rating lbs. (kg) Refer to the “F.M.V.S.S./
C.M.V.S.S. certifica-
tion label” on the
center pillar be-
tween the driver's
side front and rear
doors.
Gross axle weight rating
Front lbs. (kg)
Rear lbs. (kg)
Technical and consumer information10-9

TOWING SAFETY
Trailer hitch
Your vehicle may be equipped with an op-
tional trailer tow package. The trailer tow
package includes a receiver-type frame
mounted hitch. This hitch is rated for the
maximum towing capacity of this vehicle
when the proper towing equipment is used.
Choose a proper ball mount and hitch ball
that is rated for the trailer to be towed. Genu-
ine INFINITI ball mounts and hitch balls are
available from an INFINITI retailer.
If your vehicle is not equipped with the op-
tional trailer tow package, check the towing
capacity of your bumper hitch or receiver-
type frame mounted hitch. Choose a proper
hitch for your vehicle and trailer. A Genuine
INFINITI trailer hitch is available from an
INFINITI retailer. Make sure the trailer hitch is
securely attached to the vehicle to help avoid
personal injury or property damage due to
sway caused by crosswinds, rough road sur-
faces or passing trucks.
WARNING
Trailer hitch components have specific
weight ratings. Your vehicle may be ca-
pable of towing a trailer heavier than the
weight rating of the hitch components.
Never exceed the weight rating of the hitch
components. Doing so can cause serious
personal injury or property damage.
Hitch ball
Choose a hitch ball of the proper size and
weight rating for your trailer:
• The required hitch ball size is stamped on most trailer couplers. Most hitch balls also
have the size printed on the top of the ball.
• Choose the proper class hitch ball based on the trailer weight.
• The diameter of the threaded shank of the hitch ball must be matched to the ball
mount hole diameter. The hitch ball shank
should be no more than 1/16” smaller than
the hole in the ball mount.
• The threaded shank of the hitch ball must be long enough to be properly secured to
the ball mount. There should be at least 2
threads showing beyond the lock washer
and nut.
Ball mount
The hitch ball is attached to the ball mount
and the ball mount is inserted into the hitch
receiver. Choose a proper class ball mount
based on the trailer weight. Additionally, the
ball mount should be chosen to keep the
trailer tongue level with the ground.
Weight carrying hitches
A weight carrying or “dead weight” ball
mount is one that is designed to carry the
whole amount of tongue weight and gross
weight directly on the ball mount and on the
receiver.
Weight distribution hitch
This type of hitch is also called a “load-
leveling” or “equalizing” hitch. A set of bars
attach to the ball mount and to the trailer to
distribute the tongue weight (hitch weight) of
your trailer. Many vehicles can't carry the full
tongue weight of a given trailer, and need
some of the tongue weight transferred
through the frame and pushing down on the
front wheels. This gives stability to the tow
vehicle.
10-24Technical and consumer information

A weight-distributing hitch system (Class IV)
is recommended if you plan to tow trailers
with a maximum weight over 5,000 lbs.
(2,268 kg). Check with the trailer and towing
equipment manufacturers to determine if
they recommend the use of a weight-
distributing hitch system.
NOTE:
A weight-distributing hitch system may af-
fect the operation of trailer surge brakes. If
you are considering use of a weight-
distributing hitch system with a surge
brake-equipped trailer, check with the surge
brake, hitch or trailer manufacturer to de-
termine if and how this can be done.
Follow the instructions provided by the
manufacturer for installing and using the
weight-distributing hitch system.
General set-up instructions are as follows:
1. Park unloaded vehicle on a level surface.With the ignition switch on and the doors
closed, allow the vehicle to stand for sev-
eral minutes so that it can level.
2. Measure the height of a reference point on the front and rear bumpers at the cen-
ter of the vehicle. 3. Attach the trailer to the vehicle and adjust
the hitch equalizers so that the front bum-
per height is within0-.5inches (0 – 13
mm) of the reference height measured in
step 2. The rear bumper should be no
higher than the reference height mea-
sured in step 2.
WARNING
Properly adjust the weight distributing
hitch so the rear of the bumper is no higher
than the measured reference height when
the trailer is attached. If the rear bumper is
higher than the measured reference height
when loaded, the vehicle may handle un-
predictably which could cause a loss of ve-
hicle control and cause serious personal in-
jury or property damage.
Sway control device
Sudden maneuvers, wind gusts, and buffet-
ing caused by other vehicles can affect trailer
handling. Sway control devices may be used
to help control these affects. If you choose to
use one, contact a reputable trailer hitch sup-
plier to make sure the sway control device will
work with the vehicle, hitch, trailer and the
trailer's brake system. Follow the instructions
provided by the manufacturer for installing
and using the sway control device.
Class I hitch
Class I trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow
trailers of a maximum weight of 2,000 lbs.
(907 kg).
Class II hitch
Class II trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow
trailers of a maximum weight of 3,500 lbs.
(1,587 kg).
Tire pressures
• When towing a trailer, inflate the vehicle tires to the recommended
cold tire pressure indicated on the
Tire and Loading Information label.
• Trailer tire condition, size, load rating and proper inflation pressure should
be in accordance with the trailer and
tire manufacturer's specifications.
Safety chains
Always use suitable safety chains between
your vehicle and the trailer. The safety chains
should be crossed and should be attached to
the hitch, not to the vehicle bumper or axle.
Technical and consumer information10-25

Tire chains.................8-36Tire pressure................8-27Tire rotation................8-36Types of tires................8-33Uniform tire quality grading......10-29Wheel/tire size...............10-9Wheels and tires..............8-27Tire pressure
Low tire pressure warning light.....2-13Tire Pressure Monitoring System (TPMS). .5-5Top tether strap child restraint.......1-26Towing4-wheel drive models.......... .6-10All-wheel drive models...........6-9Flat towing...........10-28, 10-29Tow truck towing............. .6-8Towing load/specification.......10-23Trailer towing.............. .10-19Towing a trailer...............10-19Traffic Sign Recognition (TSR).......5-32Transceiver
HomeLink® Universal
Transceiver
.....2-70, 2-72, 2-73, 2-74TransmissionContinuously Variable Transmission (CVT)
fluid
.................... .8-10Driving with Continuously Variable
Transmission (CVT)............5-18Travel (See registering a vehicle in another
country)................... .10-10Trip odometer..................2-5Trunk light.................. .2-69Turn signal switch...............2-41
U
Uniform tire quality grading........10-29USB/iPod® Charging Ports.........4-42
V
Vanity mirror................. .3-33Variable voltage control system......8-14Vehicle dimensions and weights......10-9Vehicle Dynamic Control (VDC)
system.................... .5-154Vehicle identification............10-10Vehicle identification number (VIN). . .10-10Vehicle identification number (VIN)
(Chassis number)............. .10-10Vehicle identification number (VIN)
plate..................... .10-10Vehicle immobilizer system.........5-16Vehicle information display.........2-19Vehicle loading information........10-15Vehicle recovery................6-11Vehicle security system............2-29(INFINITI vehicle immobilizer system),
engine start..........2-30, 3-4, 5-16Vents..................... .4-33Visors......................3-32
W
Warning
Air bag warning light........1-61, 2-12
Anti-lock brake warning light. .2-10, 2-13Battery charge warning light.......2-11Brake warning light........... .2-10Distance Control Assist (DCA).....5-106Engine oil pressure warning light. . . .2-11Hazard warning flasher switch......6-2Loose fuel cap warning..........2-22Low fuel warning light. .2-12, 2-15, 2-22Low tire pressure warning light.....2-13Low windshield-washer fluid warning
light.................... .2-22Seat belt warning light.......1-14, 2-12Supplemental air bag warning
light..................1-61, 2-12TPMS.................... .2-4Vehicle security system..........2-29Warning labels (for SRS).........1-60Warning/indicator lights and audible
reminders...............2-9, 2-10Warning lights..............2-9, 2-10Warning lights, indicator lights and audible
reminders.................... .2-9Warning systems switch...........2-45Warning/indicator lights and audible
reminders................ .2-9, 2-10Audible reminders..........2-9, 2-10Indicator lights............2-9, 2-10Warning lights............2-9, 2-10Washer switch
Rear window wiper and washer
switches
.................. .2-34Weights (See dimensions and weights). .10-9Wheel/tire size................10-9Wheels and tires................8-27
11-7