Hyundai IONIQ 5 Owner's Manual page 648

Example tire size designation:
(These numbers are provided as an
example only; your tire size designator
could vary depending on your vehicle.)
235/55R19 105W
235 - Tire width in millimeters.
55 - Aspect ratio. The tire's section
height as a percentage of its width.
R - Tire construction code (Radial).
19 - Rim diameter in inches.
105 - Load Index, a numerical code
associated with the maximum load
the tire can carry.
W - Speed Rating Symbol. See the
speed rating chart in this section for
additional information.
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:
7.5J X 19
7.5 - Rim width in inches.
J - Rim contour designation.
19 - Rim diameter in inches.
Tire speed ratings
The chart below lists many of the
different 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 operating
speed.
Speed Rating
Maximum Speed
Symbol
S 180 km/h (112 mph)
T 190 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 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 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 shows a plant
code number, tire size and tread pattern
and the last four numbers indicate week
and year manufactured.
For example:
DOT XXXX XXXX 5022 represents that
the tire was produced in the 50th week
of 2022.
09
9-27