2018 KIA NIRO PLUG-IN HYBRID inflation pressure

849
Maintenance
Underinflation also results inexcessive wear, poor handling and
reduced fuel economy. Wheel
deformation also is possible. Keep
your tire pressures at the proper
levels. If a tire frequently needs
refilling, have it checked by an
authorized Kia dealer.
Overinflation produces a harsh ride, excessive wear at the center
of the tire tread, and a greater pos-
sibility of damage from road haz-
ards.
Warm tires normally exceed rec- ommended 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 underinflated.
Be sure to reinstall the tire inflation valve caps. 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 pressure
Always observe the following:
Check tire pressure when the tiresare cold. (After vehicle has been
parked for at least three hours or
hasn't been driven more than one
mile (1.6 km) since startup.)
Check the pressure of your spare tire each time you check the pres-
sure of other tires.
Never overload your vehicle. Be careful not to overload a vehicle
luggage rack if your vehicle is
equipped with one.
Checking tire inflation pres-
sure
Check your tires once a month or
more.
Also, check the tire pressure of the
spare tire.
How to check
Use a good quality 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 even when
they're underinflated.
Check the tire's inflation pressure
when the tires are cold. - "Cold"
means your vehicle has been sitting
for at least three hours or driven no
more than 1 mile (1.6 km).
WARNING - Tire Inflation
Overinflation or underinflation
can reduce tire life, adversely
affect vehicle handling, and
lead to sudden tire failure. This
could result in loss of vehicle
control and potential injury.

Maintenance
50
8
Remove the valve cap from the tire
valve stem. Press the tire gauge firm-
ly 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 adjust-
ment is necessary. If the pressure is
low, add air until you reach the rec-
ommended amount.
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. They help prevent
leaks by keeping out dirt and mois-
ture. Inspect your tires frequently for
proper inflation as well as wear and
damage. Always use a tire pres-
sure gauge.
Tires with too much or too little pressure wear unevenly causing
poor handling, loss of vehicle con-
trol, and sudden tire failure leading
to accidents, injuries, and even
death. The recommended cold tire
pressure for your vehicle can be
found in this manual and on the tire
label located on the driver's side
center pillar.
Remember to check the pressure of your spare tire. Kia recommends
that you check the spare every
time you check the pressure of the
other tires on your vehicle.Tire rotation
To equalize tread wear, it is recom-
mended that the tires be rotated
every 7,500 miles (12,000 km) 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 pres-
sure, improper wheel alignment, out-
of-balance wheels, severe braking or
severe cornering. Look for bumps or
bulges in the tread or side of tire.
Replace the tire if you find either 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
lug nut tightness.
Refer to “Tire and wheels” in chapter
9.

855
Maintenance
3. Checking tire life (TIN : TireIdentification Number)
Any tires that are over 6 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 num-
bers on a tire consisting of numbers
and English letters. The manufactur-
ing date is designated by the last four
digits (characters) of the DOT code.
DOT : XXXX XXXX OOOO
The front part of the DOT means a
plant code number, tire size and
tread pattern and the last four num-
bers indicate week and year manu-
factured.
For example:
DOT XXXX XXXX 1617 represents
that the tire was produced in the 16th
week of 2017.
4. Tire ply composition and mate-rial
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 inflationpressure
This number is the greatest amount of
air pressure that should be put in the
tire. Do not exceed the maximum per-
missible 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 440
TRACTION A
TEMPERATURE A
WARNING - Tire age
Replace tires within the recom-
mended time frame. Failure to
replace tires as recommended
can result in sudden tire failure,
which could lead to a loss of
control and an accident.

Maintenance
58
8
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 designat-
ed by its manufacturer as primarily
intended for use on lightweight trucks
or multipurpose passenger vehicles.
Load Index: An assigned number
ranging from 1 to 279 that corre-
sponds to the load carrying capacity
of a tire.
Load ratings: The maximum load
that a tire is rated to carry for a given
inflation pressure. Maximum Inflation Pressure:
The
maximum air pressure to which a
cold tire may be inflated. The maxi-
mum air pressure is molded onto the
sidewall.
Maximum Load Rating: The load
rating for a tire at the maximum per-
missible 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. (68kg). Occupant Distribution:
Designated
seating positions.
Outward Facing Sidewall: The side
of a asymmetrical tire that has a par-
ticular 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.
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 automo-
tive wheel, provides the traction and
contains the gas or fluid that sustains
the load.

859
Maintenance
Production options weight:The
combined weight of installed regular
production options weighing over 5
lb.(2.3 kg) in excess of the standard
items which they replace, not previ-
ously considered in curb weight or
accessory weight, including heavy
duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim.
Recommended Inflation Pressure:
Vehicle manufacturer's recommend-
ed tire inflation pressure and 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 seat-
ed.
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 inch of tread
remains.
UTQGS: Uniform Tire Quality
Grading Standards, a tire information
system that provides consumers with
ratings for a tire's traction, tempera-
ture and treadwear. Ratings are
determined by tire manufacturers
using government testing proce-
dures. The ratings are molded into
the sidewall of the tire.
Vehicle Capacity Weight: The num-
ber of designated seating positions
multiplied by 150 lbs. (68kg) plus the
rated cargo and luggage load. 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 occu-
pant weight and driving by 2.
Vehicle Placard: A label permanent-
ly attached to a vehicle showing the
original equipment tire size and rec-
ommended inflation pressure.

861
Maintenance
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 select-
ed to complement the ride and han-
dling 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 radial-ply tires should
always be used as a set of four.Longer wearing tires can be more
susceptible to irregular tread wear. It
is very important to follow the tire
rotation interval shown in this section
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 tire
(if equipped)
Low aspect ratio tires, whose aspect
ratio is lower than 50, are provided
for sporty looks.
Because the low aspect ratio tires
are optimized for handling and brak-
ing, it may be more uncomfortable to
ride in and there is more noise com-
pare with normal tires.

Specifications, Consumer information, Reporting safety defects
49
TIRES AND WHEELS
*1: Load Index
*2: Speed Symbol
*3: Normal load : Up to 3 persons
*4: Only for Hybrid Electric Vehicle (HEV)
CAUTION
When replacing tires, use the same size originally supplied with the vehicle. Using tires of a different size can damage the related parts or make them work irregularly.
✽
✽ NOTICE
• It is permissible to add 3psi to the standard tire pressure specification if colder temperatures are expected soon.
Tires typically loose 1psi for every 12°F temperature drop. If extreme temperature variations are expected, re-
check your tire pressure as necessary to keep them properly inflated.
• We recommend that when replacing tires, use the same originally supplied with the vehicles. If not, that aff\
ects driving performance.
• When driving in high altitude grades, it is natural for the atmospheric pressure to decrease. Therefore, please check the tire pressure and add more air when necessary.
Additionally required tire air pressure per km above sea level: 1.5psi/km
ItemTire sizeWheel size
Load
CapacitySpeed
capacityInflation pressure [bar(psi, kPa)]Wheel lug
nut torque [Kgf·m
(lbf·ft, N·m)]
Normal loadMaximum load
LI *1KgSS *2Km/hFront RearFront Rear
Full size tire205/60 R16 6.5J X 1692630H2102.5 (36, 250)2.5 (36, 250)11~13
(79~94,
107~127)225/45 R18 *47.5J X 1891615V2402.5 (36, 250)2.5 (36, 250)
Compact
Spare tireT125/80 D16 *44T X 1697730M1304.2 (60, 420)4.2 (60, 420)

I3
Index
Back-up lamp bulb replacement . . . . . . . . . . . . . . . . . 8-100
Battery (Plug-in hybrid) . . . . . . . . . . . . . . . . . . . . . . . . 8-45For best battery service . . . . . . . . . . . . . . . . . . . . . . 8-45
Recharging the battery . . . . . . . . . . . . . . . . . . . . . . . 8-46
Reset items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-47
Battery replacement (for smart key) . . . . . . . . . . . . . . . 4-15
Battery saver function . . . . . . . . . . . . . . . . . . . . . . . . . 4-116
Before driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Before Jump starting. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Blind Spot Detection System(BSD) . . . . . . . . . . . . . . . 6-66 BSD (Blind Spot Detection) /LCA (Lane Change Assist) . . . . . . . . . . . . . . . . . . 6-67
RCTA (Rear cross traffic alert . . . . . . . . . . . . . . . . . 6-70
Limitations condition . . . . . . . . . . . . . . . . . . . . . . . . 6-72
Bonnet see the hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-33\
Checking the brake fluid level . . . . . . . . . . . . . . . . . 8-33
Brake system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23 Power brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25
Anti-lock brake system (ABS) . . . . . . . . . . . . . . . . . 6-27
Electronic stability control (ESC) . . . . . . . . . . . . . . 6-29
Vehicle stability management (VSM) . . . . . . . . . . . 6-32
Hill-start assist control (HAC) . . . . . . . . . . . . . . . . . 6-34
Bulb replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-91
Bulb replacement precaution . . . . . . . . . . . . . . . . . . . . 8-91 Bulb wattage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Button start/stop, see engine start/stop button . . . . . . . . 6-9
California Perchlorate notice . . . . . . . . . . . . . . . . . . . 8-116
Camera (Rear view) . . . . . . . . . . . . . . . . . . . . . . . . . . 4-115
Capacities (Lubricants) . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
Care
Care of seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
SRS Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-66
Exterior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-105
Interior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-110
Tire care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-48\
Care of seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
Center console storage . . . . . . . . . . . . . . . . . . . . . . . . 4-149
Central door lock switch. . . . . . . . . . . . . . . . . . . . . . . . 4-22
Certification label . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-101
Chains - Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-95
Checking fluid levels . . . . . . . . . . . . . . . . . . . . . . . . . . 8-25
Checking tire inflation pressure . . . . . . . . . . . . . . . . . . 8-49
Child restraint system . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 "Securing a child restraint withthe LATCH anchors system" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37\
"Securing a child restraint seatwith" "Tether Anchor" "system" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38
"Securing a child restraint with alap/shoulder belt" . 3-39
Child-protector rear door lock . . . . . . . . . . . . . . . . . . . 4-23
B
C