Hyundai ix35 2015 Owner's Manual page 500

Maintenance
2. Tyre size designation
A tyre's sidewall is marked with a tyre
size designation. You will need this
information when selecting replace-
ment tyres for your car. The following
explains what the letters and num-
bers in the tyre size designation
mean.
Example tyre size designation:
(These numbers are provided as an
example only; your tyre size designa-
tor could vary depending on your
vehicle.)
P225/55R18 102H
P - Applicable vehicle type (tyres
marked with the prefix "P'' are
intended for use on passenger
vehicles or light trucks; however,
not all tyres have this marking).
225 - Tyre width in millimeters.
55 - Aspect ratio. The tyre's section
height as a percentage of its
width.
R - Tyre construction code (Radial).
18 - Rim diameter in inches.
7 40
102 - Load Index, a numerical code
associated with the maximum
load the tyre can carry.
H - Speed Rating Symbol. See the
speed rating chart in this section
for additional information.
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:
7.0JX18
7.0 - Rim width in inches.
J - Rim contour designation.
18 - Rim diameter in inches.
Tyre speed ratings
The chart below lists many of the dif-
ferent speed ratings currently being
used for passenger cars. The speed
rating is part of the tyre size desig-
nation on the sidewall of the tyre.
This symbol corresponds to that
tyre's designed maximum safe oper-
ating speed.
Speed
Rating Maximum Speed
Symbol
S 112 mph (180 km/h)
T 118 mph (190 km/h)
H 130 mph (210 km/h)
V 149 mph (240 km/h)
Z Above 149 mph (240 km/h)