2018 Hyundai Ioniq Hybrid inflation pressure

7-50
Maintenance
4. Tire ply composition and
material
The number of layers or plies of rub-
ber-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 con-
struction; the letter "D“ means diago-
nal or bias ply construction; and the
letter "B" means belted-bias ply con-
struction.
5. Maximum permissible infla-
tion 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 pounds 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.
7. Uniform tire quality grading
Quality grades can be found where
applicable on the tire sidewall
between tread shoulder and maxi-
mum section width.
For example:
TREADWEAR 200
TRACTION AA
TEMPERATURE A
Tread wear
The tread wear grade is a compara-
tive rating based on the wear rate of
the tire when tested under controlled
conditions on a specified govern-
ment test course. For example, a tire
graded 150 would wear one-and-a-
half times (1½) as well on the gov-
ernment 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.

8-4
Specifications & Consumer information
TIRES AND WHEELS
Item Tire sizeWheel
sizeInflation pressure, bar (kPa, psi)
Wheel lug nut
torque
kgf·m (lbf·ft, N•m) Normal load *1Maximum load
Front Rear Front Rear
Full size tire195/65 R15 *
26.0J X 15
2.5 (250, 36) 2.5 (250, 36) 2.5 (250, 36) 2.5 (250, 36)
11~13
(79~94, 107~127) 205/55 R16 *
36.5J X 16
225/45 R17 *
27.0J X 17
Compact spare tire
(if equipped)T125/80 D154.0T X 154.2 (420, 60)4.2 (420, 60)4.2 (420, 60)4.2 (420, 60)
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
*1 : Normal load : Up to 3 persons
*2 : Hybrid vehicle
*3 : Plug-in hybrid vehicle
• It is permissible to add 20 kPa (3 psi) to the standard tire pressure specification if colder temperatures are
expected soon. Tires typically lose 7 kPa (1 psi) for every 7°C (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 proper level
(Air inflation per altitude: +10 kPa/1 km (+2.4 psi/1 mile).
NOTICE

I-3
Battery (12 volt, Plug-in hybrid vehicle) .....................7-38
Battery recharging......................................................7-40
Battery cooling duct .....................................................2-24
Battery saver function .................................................3-111
Before driving .................................................................5-4
Blind spot detection (BSD) system ..............................5-40
Bluetooth
®Wireless Technology hands-free ..................4-4
Bottle holder ...............................................................3-147
Brake fluid ....................................................................7-29
Brake system.................................................................5-27
Anti-lock brake system (ABS) ..................................5-31
Disc brakes wear indicator ........................................5-28
Electronic stability control (ESC) .............................5-33
Emergency stop signal (ESS) ....................................5-38
Good braking practices ..............................................5-39
Hill-start assist control (HAC)...................................5-38
Parking brake .............................................................5-28
Power brakes..............................................................5-27
Vehicle stability management (VSM) .......................5-36
Bulb replacement
Daytime running lamp ...............................................7-76
Front position lamp....................................................7-68
Front turn signal lamp ...............................................7-68
Headlamp ...................................................................7-68
Headlamp aiming .......................................................7-72
High mounted stop lamp ...........................................7-82Interior light bulb .......................................................7-82
License plate light bulb .............................................7-82
Rear combination lamp bulb .....................................7-77
Rear fog lamp ............................................................7-82
Side repeater lamp ....................................................7-76
Bulb wattage ...................................................................8-3
Button start/stop, see engine start/stop button................5-9
Camera (Rear view)....................................................3-120
Capacities (Lubricants) ...................................................3-6
Care
Exterior care...............................................................7-84
Interior care................................................................7-89
Tire care .....................................................................7-42
Cellular phone charger................................................3-150
Center console storage................................................3-145
Central door lock switch...............................................3-14
Certification label ...........................................................8-8
Chains
Tire chains................................................................5-100
Checking tire inflation pressure ...................................7-44
Child restraint system (CRS)........................................2-38
Booster seats ..............................................................2-40
Children always in the rear ........................................2-38
Forward-facing child restraint system .......................2-40
Installing a child restraint system (CRS)...................2-41
I
Index
B
C

I-10
Rear center seatbelt.......................................................2-31
Rear fog lamp .............................................................3-110
Rear parking assist system .........................................3-121
Rear seat adjustment .....................................................2-13
Armrest ......................................................................2-16
Folding the rear seat ..................................................2-13
Rear seat headrests .......................................................2-20
Adjusting the height up and down.............................2-20
Rear seat warmers.........................................................2-24
Rear view camera .......................................................3-120
Recommended cold tire inflation pressures .................7-43
Recommended lubricants and capacities........................8-6
Recommended SAE viscosity number ........................8-7
Remote key .....................................................................3-4
Battery replacement .....................................................3-6
Mechanical key ............................................................3-5
Removable towing hook ...............................................6-44
Replacement light bulb .................................................7-66
Returning used vehicles ................................................F-9
Rocking the vehicle ......................................................5-96
Rotation (Tire) ..............................................................7-45Safety messages..............................................................F-5
Scheduled maintenance services ....................................7-8
Seat belt warning light..................................................2-26
Seat belts .......................................................................2-25
Additional seat belt safety precautions ......................2-34
Care of seat belts .......................................................2-36
Do not lie down .........................................................2-36
Height adjustment ......................................................2-30
Keep belts clean and dry............................................2-36
Lap/shoulder belt .......................................................2-29
One person per belt ....................................................2-36
Periodic inspection.....................................................2-36
Pre-tensioner seat belt ................................................2-31
Rear center seatbelt ....................................................2-31
Seat belt restraint system ...........................................2-29
Seat belt safety precautions .......................................2-25
Seat belt use and children ..........................................2-34
Seat belt use and injured people ................................2-36
Seat belt use during pregnancy ..................................2-34
Seat belt warning light ...............................................2-26
When to replace seat belts .........................................2-37
Seat warmers
Front ..........................................................................2-21
Rear ............................................................................2-24
Index
RS

I-12
Tachometer ...................................................................3-48
Tailgate .........................................................................3-38
Theft-alarm system .......................................................3-17
Tilt steering / Telescopic steering .................................3-21
Tire chains ..................................................................5-100
Tire load and speed capacity ..........................................8-5
Tire Mobility Kit (TMK) ..............................................6-28
Tire pressure monitoring system (TPMS) ....................6-14
Tire rotation ..................................................................7-45
Tire specification and pressure label ..............................8-9
Tires and wheels ...........................................................7-42
Checking tire inflation pressure.................................7-44
Compact spare tire replacement ................................7-47
Low aspect ratio tires.................................................7-52
Recommended cold tire inflation pressures ..............7-43
Tire care .....................................................................7-42
Tire maintenance........................................................7-48
Tire replacement ........................................................7-46
Tire rotation ...............................................................7-45
Tire sidewall labeling.................................................7-48
Tire traction................................................................7-47
Wheel alignment and tire balance .............................7-46
Wheel replacement .............................................7-47, 8-4
Towing ..........................................................................6-43
Trailer towing .............................................................5-104Trip computer
Hybrid vehicle ...........................................................3-96
Plug-in hybrid vehicle .............................................3-101
Turn signals ................................................................3-109
User settings mode .................................................3-86, 92
Vanity mirror lamp......................................................3-116
Vehicle break-in process.................................................F-9
Vehicle certification label ...............................................8-8
Vehicle identification number (VIN)..............................8-8
Vehicle modification.......................................................F-9
Vehicle stability management (VSM) ..........................5-36
Vehicle weight ............................................................5-113
Overloading..............................................................5-113
Index
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U
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