HYUNDAI IONIQ 6 2023 Owners Manual
Manufacturer: HYUNDAI, Model Year: 2023, Model line: IONIQ 6, Model: HYUNDAI IONIQ 6 2023Pages: 582, PDF Size: 10.77 MB
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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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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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Passenger (P-Metric) tire
A tire used on passenger cars and
some light duty trucks and
multipurpose vehicles.
Ply
A layer of rubber-coated parallel
cords.
Pneumatic tire
A mechanical device made of rubber,
chemicals, fabric and steel or other
materials, that, when mounted on an
automotive wheel provides the
traction and contains the gas or fluid
that sustains the load.
Pneumatic options weight
The combined weight of installed
regular production options weighing
over 5 lbs. (2.3 kg) in excess of the
standard items which they replace,
not previously considered in curb
weight or accessory weight,
including heavy duty breaks, ride
levelers, roof rack, heavy duty
battery, and special trim.
Recommended inflation pressure
Vehicle manufacturer’s
recommended tire inflation pressure
as shown on the tire placard.
Radial ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at 90 degrees to the centerline of
the tread.
Rim
A metal support for a tire and upon
which the tire beads are seated.Sidewall
The portion of a tire between the
tread and the bead.
Speed rating
An alphanumeric code assigned to a
tire indicating the maximum speed at
which a tire can operate.
Traction
The friction between the tire and the
road surface. The amount of grip
provided.
Tread
The portion of a tire that comes into
contact with the road.
Treadwear indicators
Narrow bands, sometimes called
“wear bars”, that show across the
tread of a tire when only 1/16 in. of
tread remains.
UTQGS
Uniform Tire Quality Grading
Standards is a tire information system
that provides consumers with ratings
for a tire’s traction, temperature and
treadwear. Ratings are determined
by tire manufacturers using
government testing procedures. The
ratings are molded into the sidewall
of the tire.
Vehicle capacity weight
The number of designated seating
positions multiplied by 150 lbs. (68
kg) plus the rated cargo and luggage
load.
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Vehicle maximum load on the tire
Load on an individual tire due to curb
and accessory weight plus maximum
occupant and cargo weight.
Vehicle normal load on the tire
Load on an individual tire that is
determined by distributing to each
axle its share of the curb weight,
accessory weight, and normal
occupant weight and dividing by 2.
Vehicle placard
A label permanently attached to a
vehicle showing the original
equipment tire size and
recommended inflation pressure.
All Season Tires
HYUNDAI specifies all season tires on
some models to provide good
performance for use all year round,
including snowy and icy road
conditions. All season tires are
identified by ALL SEASON and/or
M+S (Mud and Snow) on the tire
sidewall. Snow tires have better snow
traction than all season tires and may
be more appropriate in some areas.
Summer Tires
HYUNDAI specifies summer tires on
some models to provide superior
performance on dry roads. Summer
tire performance is substantially
reduced in snow and ice. Summer
tires do not have the tire traction
rating M+S (Mud and Snow) on the
tire side wall. If you plan to operate
your vehicle in snowy or icy
conditions, HYUNDAI recommends
the use of snow tires or all season
tires on all four wheels.
Snow Tires
If you equip your car with snow tires,
they should be the same size and
have the same load capacity as the
original tires. Snow tires should be
installed on all four wheels;
otherwise, poor handling may result.
Snow tires should carry 4 psi (28 kPa)
more air pressure than the pressure
recommended for the standard tires
on the tire label on the driver’s side of
the center pillar, or up to the
maximum pressure shown on the tire
sidewall, whichever is less. Do not
drive faster than 75 mph (120 km/h)
when your vehicle is equipped with
snow tires.
Radial-Ply Tires
Radial-ply tires provide improved
tread life, road hazard resistance and
smoother high speed ride. The
radial-ply tires used on this vehicle
are of belted construction, and are
selected to complement the ride and
handling characteristics of your
vehicle. Radial-ply tires have the
same load carrying capacity, as
bias-ply or bias belted tires of the
same size, and use the same
recommended inflation pressure.
Mixing of radial-ply tires with bias-ply
or bias belted tires is not
recommended. Any combinations of
radial-ply and bias-ply or bias belted
tires when used on the same vehicle
will seriously deteriorate vehicle
handling. The best rule to follow is:
Identical pairs of radial-ply tires
should always be used as a set for the
front tires and a set for the rear tires.
Longer wearing tires can be more
susceptible to irregular tread wear. It
is very important to follow the tire
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rotation interval in this chapter to
achieve the tread life potential of
these tires. Cuts and punctures in
radial-ply tires are repairable only in
the tread area, because of sidewall
flexing. Consult your tire dealer for
radial-ply tire repairs.
WARNING 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
accident.
if equipped
Low Aspect Ratio Tires
The aspect ratio is lower than 50 on
low aspect ratio tires.
Because low aspect ratio tires are
optimized for handling and braking,
their sidewall is a little stiffer than a
standard tire. Also, low aspect ratio
tires tend to be wider so that they
consequently have increased contact
with the road surface. In some
instances, low aspect ratio tires may
generate more road noise compared
with standard tires.
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