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490 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
"....b
lank...." = Passe
nger 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 = Over
all diameter in inches (in)
215, 2
35, 145 = Secti
on width in millimeters (mm)
65, 85, 80 = Aspect ratio in percent (%)
• Ratio
of section height to section width of tire, or
10.5 = S
ection width in inches (in)
R = Construction code
•
"R" me
ans radial construction, or
• "D" me
ans diagonal or bias construction
15, 16
, 18 = Rim diameter in inches (in)
Service
Description:
95
= Load Index
• A nume
rical code associated with the maximum load a tire can carry
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