Jeep 2011 Wrangler User Manual
Page 429
compact spare tires have the letter “T” or “S” molded
into the sidewall preceding the size designation. Ex-
ample: T145/80D18 103M.
• High flotation tire sizing is based on U.S. design
standards, and it begins with the tire diameter molded
into the sidewall. Example: 31x10.5 R15 LT.
Tire Sizing Chart
EXAMPLE:
Size Designation:
P
= Passenger Car tire size based on U.S. design standards
؆....blank....؆ = Passenger Car tire based on European design standards
LT
= Light Truck tire based on U.S. design standards
T or S
= Temporary compact spare tire
31
= Overall diameter in inches (in)
215
= Section width in millimeters (mm)
65
= Aspect ratio in percent (%)
— Ratio of section height to section width of tire
10.5
= Section width in inches (in)
R
= Construction code
—
ЉRЉ means radial construction
—
ЉDЉ means diagonal or bias construction
15
= Rim diameter in inches (in)
5
STARTING AND OPERATING
427