Tire Sizing Chart
EXAMPLE:
Example Size Designation: P215/65R15XL 95H, 215/65R15 96H, LT235/85R16C, T145/
80D18 103M, 31x10.5 R15 LT
P
= Passenger car tire size based on U.S. design standards, or
"....blank...."
= Passenger car tire based on European design standards, or
LT
= Light truck tire based on U.S. design standards, or
T or S
= Temporary spare tire or
31
= Overall diameter in inches (in)
215, 235, 145
= Section width in millimeters (mm)
65, 85, 80
= Aspect ratio in percent (%)
– Ratio of section height to section width of tire, or
10.5
= Section width in inches (in)
R
= Construction code
– "R" means radial construction, or
– "D" means diagonal or bias construction
15, 16, 18
= Rim diameter in inches (in)
Service Description:
95
= Load Index
– A numerical code associated with the maximum load a tire can carry
H
= 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 conditions
– The maximum speed corresponding to the speed symbol should only be
achieved under specified operating conditions (i.e., tire pressure, vehicle loading,
road conditions, and posted speed limits)
Load Identification:
Absence of the following load identification symbols on the sidewall of the tire indicates a Standard
Load (SL) tire:
•
XL
= Extra load (or reinforced) tire, or
•
LL
= Light load tire or
•
C, D, E, F, G
= Load range associated with the maximum load a tire can carry at a specified pressure
Maximum Load
– Maximum load indicates the maximum load this tire is designed to carry
Maximum Pressure
– Maximum pressure indicates the maximum permissible cold tire inflation
pressure for this tire
M A I N T A I N I N G Y O U R V E H I C L E
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