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330 SERVICING AND MAINTENANCE
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)
21
5, 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)
Se
rvice Description:
95 = Load Index
A numerical code associated with the maximum load a tire can carry
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