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Tire Markings
Tire Markings
1 — US DOT Safety Standards Code (TIN)
2 — Size Designation
3 — Service Description
4 — Maximum Load
5 — Maximum Pressure
6 — Treadwear, Traction and
Temperature Grades
Tire Sizing Chart
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)
234
NOTE:
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.
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.
LT (Light Truck) — Metric tire sizing is based
on US design standards. The size designa-
tion for LT-Metric tires is the same as for
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EXAMPLE:
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 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.
High flotation tire sizing is based on US
design standards and it begins with the tire
diameter
molded
into
Example: 31x10.5 R15 LT.
the
sidewall.
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