2018 Hyundai Ioniq Electric tires

7-35
7
Maintenance
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 condi-
tions 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. Grade C
responds to a level of performance
which all passenger car tires must
meet under the Federal Motor
Vehicle Safety Standard No. 109.
Grades B and A represent higher
levels of performance on the labora-
tory test wheel than the minimum
required by law.
Tire Terminology and
Definitions
Air Pressure
The amount of air inside the tire
pressing outward on the tire. Air
pressure is expressed in pounds per
square inch (psi) or kilopascal (kPa).
Accessory Weight
This means the combined weight of
optional accessories. Some exam-
ples of optional accessories are
automatic transmission, 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.
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.
WARNING

7-39
7
Maintenance
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 condi-
tions. 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 rat-
ing 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; other-
wise, 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 maxi-
mum 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 radi-
al-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 combina-
tions 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 fol-
low 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.

7-40
Maintenance
Longer wearing tires can be more
susceptible to irregular tread wear. It
is very important to follow the tire
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.
Low Aspect Ratio Tires
Low aspect ratio tires, the aspect
ratio is lower than 50, are provided
for sporty looks.
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 and conse-
quently have a greater contact patch
with the road surface. In some
instances they may generate more
road noise compared with standard
tires.
Do not mix bias ply and radial
ply tires under any circum-
stances. This may cause unusu-
al handling characteristics that
may cause loss of vehicle con-
trol resulting in an accident.
WARNING
Because the sidewall of a low
aspect ratio tire is shorter than
a standard tire, the rim of the
wheel and the tire itself is more
easily susceptible to damage.
Use caution when driving and
follow the guidelines below to
help minimize damage to the
wheel and tire:
- When driving on a rough road
or off road, drive cautiously
because tires and wheels may
be damaged. And after driving,
inspect tires and wheels.
- When passing over a pothole, speed bump, manhole, or curb
stone, drive slowly so that the
tires and wheels are not dam-
aged.
- If the tire is subjected to a severe impact, have the tire
and wheel inspected by an
authorized HYUNDAI dealer.
- Inspect the tire condition and pressure every 1,800 miles
(3,000 km).
CAUTION

888
Specifications & Consumer information
8
Specifications, Consumer information and Reporting safety defects
8
Dimensions ..............................................................8-2
Electric Vehicle Specifications .............................8-2
Bulb Wattage ..........................................................8-3
Tires and Wheels ...................................................8-4
Volume and Weight ................................................8-5
Air Conditioning System........................................8-5
Recommended Lubricants and Capacities ..........8-6
Vehicle Identification Number (VIN) ...................8-7
Vehicle Certification Label....................................8-7
Tire Specification and Pressure Label................8-8
Motor Number ........................................................8-8
Refrigerant Label ...................................................8-8
Consumer Information ...........................................8-9
Reporting Safety Defects ...................................8-10

8-4
Specifications, Consumer information and Reporting safety defects
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When replacing tires, use the same size originally supplied with the vehicle.
Using tires of a different size can damage the related parts or not work properly.
CAUTION
If your vehicle is not equipped with a compact spare tire, your vehicle will be equipped with a Tire Mobility Kit.
Items Tire SizeWheel Size
Inflation Pressure kPa (psi)Wheel Lug Nut Torque kgf
•m
(lbf
ft, Nm)Normal LoadMaximum Load
FrontRearFrontRear
Full size tire205/55 R166.5J X 16250 (36)235 (34)250 (36)235 (34)11~13
(79~94, 07~127)
It is permissible to add 3 psi to the standard tire pressure specification if colder temperatures are expect- ed soon.
Tires typically loose 1psi (7kPa) for every 12°F temperature drop. If extreme temperature variations are
expected, recheck your tire pressure as necessary to keep them properly inflated.
An air pressure generally decreases, as you drive up to a high-altitude area above sea level. Thus, if you plan to drive a high-altitude area, check the tire pressures in advance. If necessary, inflate them to a prop-
er level. (Air inflation per altitude : +2.4 psi/1 mile)
NOTICE

8-8
Specifications, Consumer information and Reporting safety defects
The tires supplied on your new vehi-
cle are chosen to provide the best
performance for normal driving.
The tire label located on the driver’s
side center pillar gives the tire pres-
sures recommended for your car. The motor number is stamped on the
motor block as shown in the drawing.
The motor number can be seen from
under the vehicle.
The refrigerant label provides infor-
mation such as refrigerant type and
amount.
The label is located on the underside
of the hood.
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I-11
One person per belt ....................................................2-34
Periodic inspection .....................................................2-35
Pre-tensioner seat belt ................................................2-29
Rear center seatbelt ....................................................2-32
Seat belt restraint system............................................2-25
Seat belt safety precautions ........................................2-23
Seat belt use and children...........................................2-3\
3
Seat belt use during pregnancy ..................................2-32
Seat belt warning light ...............................................2-24
Transporting an injured person ..................................2-34
When to replace seat belts..........................................2-35
Seat warmers Front ........................................................................\
...2-20
Rear ........................................................................\
....2-22
Seats ........................................................................\
..........2-4 Battery cooling duct ...................................................2-22
Front seat adjustment ...................................................2-6
Front seat warmers .....................................................2-20
Head restraints ............................................................2-16
Rear seat adjustment ..................................................2-12
Rear seat warmers ......................................................2-22
Safety precautions ........................................................2-5
Shift lever auto door lock ...............................................3-12
Shift-lock system ............................................................5-12
Side air bags....................................................................2-50\
Side view mirrors............................................................3-34 Blind spot mirror ........................................................3-34 Smart key ........................................................................\
..3-3
Battery replacement......................................................3-7
Liftgate unlocking ........................................................3-5
Locking........................................................................\
.3-3
Mechanical key ............................................................3-6
Panic button ..................................................................3-5
Unlocking .....................................................................3-4\
Smooth cornering............................................................5-90
Snow tires .......................................................................5\
-92
SOC (State of Charge) gauge .........................................3-54
Special driving conditions Driving at night ..........................................................5-90
Driving in flooded areas .............................................5-91
Driving in the rain ......................................................5-90
Hazardous driving conditions ....................................5-89
Highway driving.........................................................5-91
Rocking the vehicle ....................................................5-89
Smooth cornering .......................................................5-90
Speed sensing door lock .................................................3-12
Speedometer....................................................................3-52\
SPORT mode ..................................................................5-37
Steering wheel Heated steering wheel ................................................3-17
Horn ........................................................................\
....3-17
Power steering ............................................................3-16
Power Steering (EPS) .................................................3-16
Tilt steering/Telescope steering ..................................3-16
I
Index

I-12
Steering wheel audio control ............................................4-3
Storage compartment ....................................................3-123Center console storage .............................................3-123
Glove box .................................................................3-124
Sunglass holder ........................................................3-124
Multi box ..................................................................3-125
Sunglass holder .............................................................3-124
Sunroof........................................................................\
....3-42 Automatic reverse ......................................................3-43
Resetting the sunroof..................................................3-45
Sliding the sunroof .....................................................3-43
Sunroof opening and closing......................................3-43
Sunshade.....................................................................3-4\
4
Tilting the sunroof ......................................................3-44
Sunvisor ........................................................................\
3-126
Theft-alarm system .........................................................3-13
Tilt steering/Telescope steering ......................................3-16
Tire chains .......................................................................5\
-92
Tire Mobility Kit (TMK) ................................................6-14
Tire Pressure Monitoring System (TPMS) .......................6-8
Tire rotation ....................................................................7-29\
Tire specification and pressure label ................................8-8 Tires and wheels .............................................................7-26
All season tires ...........................................................7-39
Checking tire inflation pressure .................................7-28
Low aspect ratio tires .................................................7-40
Radial-ply tires ...........................................................7-39
Recommended cold tire inflation pressures ...............7-27
Snow tires ...................................................................7-39
Summer tires ..............................................................7-39
Tire care ......................................................................7-\
26
Tire maintenance ........................................................7-31
Tire replacement .........................................................7-30
Tire rotation ................................................................7-29
Tire sidewall labeling .................................................7-31
Tire terminology and definitions ................................7-35
Tire traction ................................................................7-31
Wheel alignment and tire balance ..............................7-30
Wheel replacement .....................................................7-31
Towing ........................................................................\
....6-21
Trip computer..................................................................3-90 Average fuel economy................................................3-91
Average vehicle speed ................................................3-91
Digital speedometer....................................................3-92
Driving Info display ...................................................3-93
Energy flow ................................................................3-93
Instant fuel economy ..................................................3-91
Timer ........................................................................\
..3-91
Tripmeter ....................................................................3-91\
Turn signals.....................................................................3-9\
6
Index
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