tire size HYUNDAI I20 2021 User Guide

10-57
10
Compact spare tire replacement
(if equipped)
A compact spare tire has a shorter tread
life than a regular size tire. Replace
it when you can see the tread wear
indicator bars on the tire. The replaced
compact spare tire should be the same
size and design tire as the one provided
with your new vehicle and should be
mounted on the same compact spare
tire wheel. The compact spare tire is not
designed to be mounted on a regular
size wheel, and the compact spare tire
wheel is not designed to mount a regular
size tire.
Wheel replacement
When replacing the metal wheels for any
reason, make sure the new wheels are
equivalent to the original factory units in
diameter, rim width and offset.
WARNING
A wheel that is not the correct size may
adversely affect wheel and bearing life,
braking and stopping abilities, handling
characteristics, ground clearance,
body-to-tire clearance, snow chain
clearance, speedometer and odometer
calibration, headlight aim and bumper
height.
Tire traction
Tire traction can be reduced if you drive
on worn tires, tires that are improperly
inflated or on slippery road surfaces.
Tires should be replaced when tread
wear indicators appear. Slow down
whenever there is rain, snow or ice on
the road, to reduce the possibility of
losing control of the vehicle.

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Maintenance
Tire maintenance
In addition to proper inflation, correct
wheel alignment helps decrease tire
wear. If you find a tire worn unevenly,
have your dealer check the wheel
alignment.
When you have new tires installed,
make sure they are balanced. This will
increase vehicle ride comfort and tire
life. Additionally, a tire should always
be rebalanced if it is removed from the
wheel.
Tire sidewall labeling
I030B04JMI030B04JM
22
11
77
5,65,6
33
44
11
This information identifies and describes
the fundamental characteristics of
the tire and also provides the tire
identification number (TIN) for safety
standard certification. The TIN can be
used to identify the tire in case of a
recall.
1. Manufacturer or brand name
Manufacturer or Brand name is shown.
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.)
185/65R15 88 H
185 - Tire width in millimeters.
65 - Aspect ratio. The tire’s section
height as a percentage of its width.
R - Tire construction code (Radial).
15 - Rim diameter in inches.
88 - Load Index, a numerical code
associated with the maximum load
the tire can carry.
H - Speed Rating Symbol. See the
speed rating chart in this section for
additional information.

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10
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:
5.0JX14
5.0 - Rim width in inches.
J - Rim contour designation.
14 - Rim diameter in inches
Tire speed ratings
The chart below lists many of the
different speed ratings currently being
used for passenger car 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.
Speed Rating
SymbolMaximum Speed
S180 km/h (112 mph)
T190 km/h (118 mph)
H 210 km/h (130 mph)
V 240 km/h (149 mph)
W 270 km/h (168 mph)
Y 300 km/h (186 mph)

3. Checking tire life (TIN : Tire
Identification 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 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 means a plant
code number, tire size and tread pattern
and the last four numbers indicate week
and year manufactured.
For example:
DOT XXXX XXXX 2220 represents that
the tire was produced in the 22th week
of 2020.
WARNING
Tire age
Tires degrade over time, even when
they are not being used.
Regardless of the remaining tread, it is
recommended that tires generally be
replaced after six (6) years of normal
service. Heat caused by hot climates
or frequent high loading conditions can
accelerate the aging process. Failure to
follow this warning could cause sudden
tire failure, which could lead to a loss
of control and an accident involving
serious injury or death.