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Tires
Tire Markings
1- Size Designation
9
2- Service Description
3- Maximum Load
4- Maximum Pressure
5- U.S. DOT Safety Standards
Code (TIN)
6- Treadwear, Traction and Tem-
perature Grades
Size Designation
EXAMPLE: P215/65R15
Passenger car tire size based
P
on U.S.A. design standards
9-14
Vehicle care and maintenance
Section width in millimeters
215
(mm)
Aspect ratio in percent (%)
65
Ratio of section height to
section width of tire.
Construction code
"R" means radial construc-
•
R
tion.
"D" means diagonal or bias
•
construction.
15
Rim diameter in inches (in)
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.
NOTE
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.
Temporary spare tires are high
pressure
compact
designed for temporary emer-
gency use only. Tires designed
to this standard have the letter
"T" molded into the sidewall
preceding the size designation.
Example: T145/80D18 103M.
Service Description
EXAMPLE: 95H
Load index
A numerical code associ-
95
ated with the maximum load
a tire can carry.
spares
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