Table of Contents
Advertisement
Tires
Size Designation
EXAMPLE:P215/65R15
Passenger car tire size based
P
on U.S.A. design standards
Section width in millimeters
215
(mm.)
Aspect ratio in percent (%)
65
Ratio of section height to
section width of tire.
Construction code
9
•"R" means radial construc-
R
tion.
• "D" means diagonal or
bias construction.
15
Rim diameter in inches (in)
9-12
Vehicle care and maintenance
NOTE
European/Japanese metric tire
sizing is based on European/Jap-
anese design standards. Tires
designed to these standards have
the tire size molded into the
sidewall beginning with the sec-
tion width. The letter "P" is
absent from this tire size desig-
nation.
Example:
215/65R15
96H.
LT (Light Truck) -metric tire
sizing is based on U.S.A. design
standards. The size designation
for LT-metric tires is the same as
for P-metric tires except for the
letters "LT" that are molded into
the sidewall preceding the size
designation.
Example:
LT235/85R16.
Service Description
EXAMPLE: 95H
Load index
A numerical code associ-
95
ated with the maximum load
a tire can carry.
Speed symbol
A symbol indicating the
range of speeds at which a
tire can carry a load corre-
sponding to its load index
under certain operating con-
ditions.
H
The maximum speed corre-
sponding to the speed sym-
bol should only be achieved
under specified operating
conditions. (i.e. tire pressure,
vehicle loading, road condi-
tions and posted speed lim-
its)
Advertisement
Chapters
Table of Contents
