Maintenance
367
2. Tire size designation
A tire’s sidewall is marked with a tire size
designation. You will need this informa-
tion when selecting replacement tires for
your vehicle. 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.)
195/70R 15C 95V
195 - Tire width in millimeters.
70 - Aspect ratio. The tire’s section height
as a percentage of its width.
R - Tire construction code (Radial).
15 - Rim diameter in inches.
C - Commercial tire
95 - Load Index, a numerical code asso-
ciated with the maximum load the
tire can carry.
V - Speed Rating Symbol. See the speed
rating chart in this section for addi-
tional 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:
5.5JX15
5.5 - Rim width in inches.
J - Rim contour designation.
15 - Rim diameter in inches.
Tire speed ratings
The chart below lists many of the differ-
ent 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 corre-
sponds to that tire's designed maximum
safe operating speed.
S 180 km/h (112 mph)
T 190 km/h (118 mph)
H 210 km/h (130 mph)
V 240 km/h (149 mph)
Z Above 240 km/h (149 mph)
Maximum Speed
Speed
Rating
Symbol
