332 SERVICING AND MAINTENANCE
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LT (Light Truck) — Metric tire sizing is based on
US 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.
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Temporary spare tires are designed for temporary
emergency use only. Temporary high pressure
compact spare tires have the letter “T” or “S” molded
into the sidewall preceding the size designation.
Example: T145/80D18 103M.
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High flotation tire sizing is based on US design
standards and it begins with the tire diameter
molded into the sidewall. Example: 31x10.5 R15 LT.
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 US design standards, or
"....blank...." = Passenger car tire based on European design standards, or
LT = Light truck tire based on US 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 (%)
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Ratio of section height to section width of tire, or
10.5 = Section width in inches (in)
R = Construction code
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"R" means radial construction, or
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"D" means diagonal or bias construction
15, 16, 18 = Rim diameter in inches (in)
Service Description:
95 = Load Index
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A numerical code associated with the maximum load a tire can carry
H = Speed Symbol
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A symbol indicating the range of speeds at which a tire can carry a load corresponding to its load index under certain operating conditions
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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)
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P (Passenger) — Metric tire sizing is based on
US design standards. P-Metric tires have the letter
“P” molded into the sidewall preceding the size
designation. Example: P215/65R15 95H.
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European — Metric tire sizing is based on European
design standards. Tires designed to this standard
have the tire size molded into the sidewall beginning
with the section width. The letter "P" is absent from
this tire size designation. Example: 215/65R15 96H.
NOTE:
