2023 HYUNDAI IONIQ 6 Owners Manual

9
9-21
Tire Care
For proper maintenance, safety, and
maximum electric energy economy,
you must always maintain
recommended tire inflation
pressures and stay within the load
limits and weight distribution
recommended for your vehicle.
OJK010021
All specifications (sizes and
pressures) can be found on a label
attached to the driver’s side center
pillar.
Recommended Cold Tire
Inflation Pressures
All tire pressures (including the spare)
should be checked when the tires are
cold. “Cold tires” means the vehicle
has not been driven for at least three
hours or driven less than one mile (1.6
km).
Warm tires normally exceed
recommended cold tire pressures by
4 to 6 psi (28 to 41 kPa). Do not
release air from warm tires to adjust
the pressure or the tires will be
under-inflated. For recommended
inflation pressure, refer to the “Tires
and Wheels” section in chapter 2.
WARNING • Recommended pressures must be maintained for the best ride,
vehicle handling, and minimum tire
wear.
• Over-inflation or under-inflation can reduce tire life, adversely affect
vehicle handling, and lead to
sudden tire failure that may result
in loss of vehicle control resulting in
a collision.
• Severe under-inflation may lead to severe heat build-up, causing
blowouts, tread separation, and
other tire failures that result in loss
of vehicle control resulting in a
collision. This risk is much higher on
hot days and when driving for a
long time at high speeds.
• Under-inflation may cause excessive wear, poor handling, and
reduced fuel economy. Wheel
deformation is also possible. Keep
your tire pressures at the proper
levels. If a tire frequently needs
refilling, have it inspected by an
authorized HYUNDAI dealer.
• Over-inflation produces a harsh ride, excessive wear at the center of
the tire tread, and a greater
possibility of damage from road
hazards.

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Maintenance
9-22
Check Tire Inflation Pressure
Check your tires, including the spare
tire, once a month or more.
How to check
Use a good quality tire pressure
gauge to check tire pressure. You can
not tell if your tires are properly
inflated simply by looking at them.
Radial tires may look properly inflated
when they are under-inflated.
Remove the valve cap from the tire
valve stem. Press the tire gauge
firmly onto the valve to get a pressure
measurement. If the cold tire inflation
pressure matches the recommended
pressure on the tire and loading
information label, no further
adjustment is necessary. If the
pressure is low, add air until you
reach the recommended pressure.
Make sure to put the valve caps back
on the valve stems. Without the valve
cap, dirt or moisture could get into
the valve core and cause air leakage.
If a valve cap is missing, install a new
one as soon as possible.
If you overfill the tire, release air by
pushing on the metal stem in the
center of the tire valve. Recheck the
tire pressure with the tire gauge. Be
sure to put the valve caps back on the
valve stems. Without the valve cap,
dirt or moisture could get into the
valve core and cause air leakage. If a
valve cap is missing, install a new one
as soon as possible.
Tire Rotation
To equalize tread wear, HYUNDAI
recommends that the tires be rotated
according to the maintenance
schedule or sooner if irregular wear
develops.
During rotation, check the tires for
correct balance.
When rotating tires, check for uneven
wear and damage. Abnormal wear is
usually caused by incorrect tire
pressure, improper wheel alignment,
out-of-balance wheels, severe
braking or severe cornering. Look for
bumps or bulges in the tread or side
of the tire. Replace the tire if you find
any of these conditions. Replace the
tire if fabric or cord is visible. After
rotation, be sure to bring the front
and rear tire pressures to
specification and check wheel lug nut
tightness (proper torque is 79-94
lbf·ft (11-13kgf·m).
B9005001
Disc brake pads should be inspected
for wear whenever tires are rotated.
Information When installing an unsymmetrical tire,
install the side marked “outside” facing
out.

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9
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WARNING • Do not use the compact spare tire for tire rotation.
• Do not mix bias ply and radial ply tires under any circumstances. This
may cause unusual handling
characteristics that may cause loss
of vehicle control resulting in an
collision.

Wheel Alignment and Tire
Balance
The wheels on your vehicle were
aligned and balanced carefully at the
factory to give you the longest tire life
and best overall performance.
In most cases, you will not need to
have your wheels aligned again.
However, if you notice unusual tire
wear or your vehicle pulling one way
or the other, the alignment may need
to be reset.
If you notice your vehicle vibrating
when driving on a smooth road, your
wheels may need to be rebalanced.
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Tire Replacement
B9005201[A] Tread wear indicator
If the tire is worn evenly, a tread wear
indicator will appear as a solid band
across the tread. This shows there is
less than 1/16 in. (1.6 mm) of tread left
on the tire. Replace the tire when this
happens.
Do not wait for the band to appear
across the entire tread before
replacing the tire.
WARNING To reduce the risk of DEATH or
SERIOUS INJURY:
• Replace tires that are worn, show uneven wear, or are damaged.
Worn tires can cause loss of braking
effectiveness, steering control, and
traction.
• Always replace tires with the same size as each tire that was originally
supplied with this vehicle. Using
tires and wheels other than the
recommended sizes could cause
unusual handling characteristics,
poor vehicle control, or negatively
affect your vehicle’s Anti-Lock
Brake System (ABS) resulting in a
serious accident.
• When replacing tires (or wheels), it is recommended to replace the two
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Maintenance
9-24
front or two rear tires (or wheels) as
a pair. Replacing just one tire can
seriously affect your vehicle’s
handling.
• Tires degrade over time, even when they are not being used. Regardless
of the remaining tread, HYUNDAI
recommends that tires be replaced
after six (6) years of normal service.
• Heat caused by hot climates or frequent high loading conditions
can accelerate the aging process.
Failure to follow this warning may
cause sudden tire failure, which
could lead to a loss of vehicle
control resulting in an accident.

WARNING The original tire should be repaired or
replaced as soon as possible to avoid
failure of the spare and loss of vehicle
control resulting in an accident. The
compact spare tire is for emergency
use only. Do not operate your vehicle
over 50 mph (80 km/h) when using
the compact spare tire.

Wheel Replacement
When replacing the metal wheels for
any reason, make sure the new
wheels are equivalent to the original
factory units in diameter, rim width,
and offset.
Tire Traction
Tire traction can be reduced if you
drive on worn tires, tires that are
improperly inflated or on slippery
road surfaces. Tires should be
replaced when tread wear indicators appear. To reduce the possibility of
losing control, slow down whenever
there is rain, snow or ice on the road.
Tire Maintenance
In addition to proper inflation, correct
wheel alignment helps to decrease
tire wear. If you find a tire is worn
unevenly, have your dealer check the
wheel alignment.
When you have new tires installed,
make sure they are balanced. This will
increase vehicle ride comfort and tire
life. Additionally, a tire should always
be rebalanced if it is removed from
the wheel.
Tire Sidewall Labeling
This information identifies and
describes the fundamental
characteristics of the tire and also
provides the Tire Identification
Number (TIN) for safety standard
certification. The TIN can be used to
identify the tire in case of a recall.
B9005401
1. Manufacturer or brand name
Manufacturer or brand name is
shown.
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2. Tire size designation
A tire’s sidewall is marked with a tire
size designation. You will need this
information when selecting
replacement tires for your car. The
following explains what the letters
and numbers in the tire size
designation mean.
Example tire size designation:
(These numbers are provided as an
example only; your tire size
designator could vary depending on
your vehicle.)
245/40R20 99W
245 - Tire width in millimeters.
40 - Aspect ratio. The tire’s section
height as a percentage of its width.
R - Tire construction code (Radial).
20 - Rim diameter in in.
99 - Load Index, a numerical code
associated with the maximum load
the tire can carry.
W - Speed Rating Symbol. See the
speed rating chart in this section for
additional information.
Wheel size designation
Wheels are also marked with
important information that you need
if you ever have to replace one. The
following explains what the letters
and numbers in the wheel size
designation mean.
Example wheel size designation:
8.5 X 20
8.5 - Rim width in inches.
J - Rim contour designation.
20 - Rim diameter in inches.Tire speed ratings
The chart below lists many of the
different speed ratings currently
being used for passenger vehicle
tires. The speed rating is part of the
tire size designation on the sidewall
of the tire. This symbol corresponds
to that tire’s designed maximum safe
operating speed.
3. Checking tire life (TIN: Tire
Identification Number)
Any tires that are over six years old,
based on the manufacturing date,
(including the spare tire) should be
replaced by new ones. You can find
the manufacturing date on the tire
sidewall (possibly on the inside of the
wheel), displaying the DOT Code. The
DOT Code is a series of numbers on a
tire consisting of numbers and
English letters. The manufacturing
date is designated by the last four
digits (characters) of the DOT code.
DOT: XXXX XXXX OOOO
The front part of the DOT shows a
plant code number, tire size and
tread pattern and the last four
numbers indicate week and year
manufactured.
Speed Rating
SymbolMaximum Speed
S 112 mph (180 km/h) T 118 mph (190 km/h)
H 130 mph (210 km/h) V 149 mph (240 km/h)
W 168 mph (270 km/h) Y 186 mph (300 km/h)
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For example:
DOT XXXX XXXX 1523 represents that
the tire was produced in the 15th
week of 2023.
4. Tire 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.
The letter “R” means radial ply
construction; the letter “D“ means
diagonal or bias ply construction; and
the letter “B” means belted-bias ply
construction.
5. Maximum permissible inflation
pressure
This number is the greatest amount
of air pressure that should be put in
the tire. Do not exceed the maximum
permissible inflation pressure. Refer
to the Tire and Loading Information
label for recommended inflation
pressure.
6. Maximum load rating
This number indicates the maximum
load in kilograms and lbs. 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.
Uniform tire quality grading
Quality grades can be found where
applicable on the tire sidewall
between tread shoulder and
maximum section width.
For example:
TREADWEAR 200
TRACTION AATEMPERATURE A
Tread wear
The tread wear 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 example, a tire graded 150 would
wear one-and-a-half times (1½) as
well on the government course as a
tire graded 100.
The relative performance of tires
depends upon the actual conditions
of their use, however, and may depart
significantly from the norm due to
variations in driving habits, service
practices and differences in road
characteristics and climate.
These grades are molded on the
sidewalls of passenger vehicle tires.
The tires available as standard or
optional equipment on your vehicle
may vary with respect to grade.
Traction - AA, A, B & 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 asphalt 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.

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Temperature - A, B & C
The temperature grades are A (the
highest), B and C representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled
conditions 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. 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
established for a tire that is properly
inflated and not overloaded.
Excessive speed, under-inflation,
over-inflation, or excessive loading,
either separately or in combination,
can cause heat build-up and possible
sudden tire failure. This may cause
loss of vehicle control resulting in an
accident.

Tire Terminology and
Definitions
Air pressure
The amount of air inside the tire
pressing outward on the tire. Air
pressure is expressed in lbs. per
square in. (psi) or kilopascal (kPa).Accessory weight
This means the combined weight of
optional accessories. Some examples
of optional accessories are gear,
power seats, and air conditioning.
Aspect ratio
The relationship of a tire’s height to
its width.
Belt
A rubber coated layer of cords that is
located between the plies and the
tread. Cords may be made from steel
or other reinforcing materials.
Bead
The tire bead contains steel wires
wrapped by steel cords that hold the
tire onto the rim.
Bias ply tire
A pneumatic tire in which the plies
are laid at alternate angles less than
90 degrees to the centerline of the
tread.
Cold tire pressure
The amount of air pressure in a tire,
measured in lbs. per square in. (psi) or
kilopascals (kPa) before a tire has
built up heat from driving.
Curb weight
This means the weight of a motor
vehicle with standard and optional
equipment including the maximum
capacity of fuel, oil and coolant, but
without passengers and cargo.
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Maintenance
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DOT markings
A code molded into the sidewall of a
tire signifying that the tire is in
compliance with the U.S. Department
of Transportation motor vehicle
safety standards. The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also identify
the tire manufacturer, production
plant, brand and date of production.
GVWR
Gross Vehicle Weight Rating
GAWR FRT
Gross Axle Weight Rating for the
Front Axle.
GAWR RR
Gross Axle Weight Rating for the Rear
axle.
Intended outboard sidewall
The side of an asymmetrical tire, that
must always face outward when
mounted on a vehicle.
Kilopascal (kPa)
The metric unit for air pressure.
Light Truck (LT) tire
A tire designated by its manufacturer
as primarily intended for use on
lightweight trucks or multipurpose
passenger vehicles.
Load ratings
The maximum load that a tire is rated
to carry for a given inflation pressure.Load index
An assigned number ranging from 1 to
279 that corresponds to the load
carrying capacity of a tire.
Maximum inflation pressure
The maximum air pressure to which a
cold tire may be inflated. The
maximum air pressure is molded onto
the sidewall.
Maximum load rating
The load rating for a tire at the
maximum permissible inflation
pressure for that tire.
Maximum loaded vehicle weight
The sum of curb weight; accessory
weight; vehicle capacity weight; and
production options weight.
Normal occupant weight
The number of occupants a vehicle is
designed to seat multiplied by 150
lbs. (68 kg).
Occupant distribution
Designated seating positions.
Outward facing sidewall
An asymmetrical tire has a particular
side that faces outward when
mounted on a vehicle. The outward
facing sidewall bears white lettering
or bears manufacturer, brand, and/or
model name molding that is higher or
deeper than the same moldings on
the inner facing sidewall.
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