tires GENESIS G70 2021 Service Manual

7-40
Maintenance
Wheel size designation
Wheels are also marked with impor-
tant information that you need if you
ever have to replace one. The follow-
ing explains what the letters and
numbers in the wheel size designa-
tion mean.
Example wheel size designation:
8.0J x 18
8.0 - Rim width in inches.
J - Rim contour designation.
18 - Rim diameter in inches.
Tire speed ratings
The chart below lists many of the dif-
ferent 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 oper-
ating 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 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 shows 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 1420 represents
that the tire was produced in the 14th
week of 2020.
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)
Y186 mph (300 km/h)

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7
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.

7-42
Maintenance
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 spec-
ified government test surfaces of
asphalt and concrete. A tire marked
C may have poor traction perform-
ance.
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.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
The traction grade assigned to
this tire is based on straight-
ahead braking traction tests,
and does not include accelera-
tion, cornering, hydroplaning,
or peak traction characteristics.
WARNING

7-46
Maintenance
All Season Tires
Genesis Branded Vehicle 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
Genesis Branded Vehicle 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, Genesis Branded Vehicle
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.
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.

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7
Maintenance
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 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.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 retailer of Genesis
Branded products.
- Inspect the tire condition and
pressure every 1,800 miles
(3,000 km).
CAUTION
•It is not easy to recognize tire
damage with your own eyes.
But if there is the slightest
hint of tire damage, have the
tire checked or replaced
because the tire damage may
cause air leakage from the
tire.
•If the tire is damaged by driv-
ing on a rough road, off road,
pothole, manhole, or curb
stone, it will not be covered by
the warranty.
CAUTION
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

888
Specifications & Consumer information
8
Specifications, Consumer information and Reporting safety defects
8
Dimensions ..............................................................8-2
Engine ......................................................................8-2
Bulb Wattage ..........................................................8-3
Tires and Wheels ...................................................8-4
Volume and Weight ................................................8-6
Air Conditioning System........................................8-6
Recommended Lubricants and Capacities ..........8-7
Recommended SAE viscosity number ..........................8-9
Vehicle Identification Number (VIN) .................8-10
Vehicle Certification Label .................................8-10
Tire Specification and Pressure Label .............8-11
Engine Number .....................................................8-11
Consumer Information .........................................8-12
Reporting Safety Defects ...................................8-13

8-4
Specifications, Consumer information and Reporting safety defects
TIRES AND WHEELS
Items Tire SizeWheel
Size
Inflation Pressure
kPa (psi)
Wheel Lug
Nut Torque
kgf
•m
(lbf
•ft, N•m)Normal
Load
Maximum
Load OR
over
100 mph *
2
Full size tire
Theta 2.0 T-GDI
18 inchFront225/45R188.0J x 18250 (36)260 (38)
11~13
(79~94,
107~127)
Rear225/45R188.0J x 18270 (39)270 (39)
19 inchFront225/40ZR198.0J x 19250 (36)260 (38)
Rear255/35ZR198.5J x 19250 (36)270 (39)
19 inchFront225/40R198.0J x 19250 (36)260 (38)
Rear255/35R198.5J x 19250 (36)270 (39)
Lambda 3.3 T-GDI
18 inchFront225/45R188.0J x 18250 (36)260 (38)
Rear225/45R188.0J x 18270 (39)270 (39)
19 inch
(2WD)Front225/40ZR198.0J x 19250 (36)260 (38)
Rear255/35ZR198.5J x 19250 (36)270 (39)
19 inch
(AWD)Front225/40ZR198.0J x 19260 (38)260 (38)
Rear255/35ZR198.5J x 19250 (36)270 (39)
19 inch
(2WD)Front225/40R198.0J x 19250 (36)260 (38)
Rear255/35R198.5J x 19250 (36)270 (39)
19 inch
(AWD)Front225/40R198.0J x 19260 (38)260 (38)
Rear255/35R198.5J x 19250 (36)270 (39)
Compact spare tire *1T135/80R184.0T x 18420 (60)420 (60)
*1 : If your vehicle is not equipped with a compact spare tire, your vehicle will be equipped with a Tire Mobility Kit.
*2 : Must drive only where the speed is legal.

Information
• It is permissible to add 3 psi to the standard tire pressure specification if colder temperatures are expected 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 proper level. (Air inflation per alti-
tude : +2.4 psi/1 mile).
• Must not exceed maximum inflation pressure shown on the equipped tire sidewall.
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.
NOTICE
i
8-5
88
Specifications, Consumer information and Reporting safety defects

8-11
88
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 engine number is stamped on
the engine block as shown in the
drawing.
ENGINE NUMBER TIRE SPECIFICATION AND
PRESSURE LABEL
OIK087002L
OIK087003
■2.0 T-GDI
OIK087004
■3.3 T-GDI