RAM 1500 CLASSIC 2020 Owner's Manual page 301

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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 desig-
nation. 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 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.
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 the sidewall. Example: 31x10.5 R15 LT.
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)
65, 85, 80 = Aspect ratio in percent (%)
Ratio of section height to section width of tire, or
10.5 = Section width in inches (in)
EXAMPLE:
SERVICING AND MAINTENANCE
299
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