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TIRE SAFETY INFORMATION
Tire Markings
NOTE:
² P (Passenger) - Metric tire sizing is based on U.S.
design standards. P-Metric tires have the letter ªPº
molded into the sidewall preceding the size designa-
tion. Example: P215/65R15 95H. ² 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 9 P 9 is absent from this tire
size designation. Example: 215/65R15 96H.
² LT (Light Truck) - Metric tire sizing is based on U.S.
design standards. The size designation for LT-Metric
tires is the same as for P-Metric tires except for the
letters ªLTº that are molded into the sidewall preced-
ing the size designation. Example: LT235/85R16.
² Temporary spare tires are high-pressure compact
spares designed for temporary emergency use only.
Tires designed to this standard have the letter ªTº
molded into the sidewall preceding the size designa-
tion. Example: T145/80D18 103M.
² 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. STARTING AND OPERATING 291
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Page 294 of 467
Tire Sizing Chart
Tire Sizing Chart
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 Temporary spare tire
31 Overall diameter in inches (in)
215 Section width in millimeters (mm)
65 Aspect Ratio of section height to section width of tire, written in percent (%)
10.5 Section width in inches (in)
R 9 R 9 means radial construction
9 D 9 means diagonal or bias construction
15 Rim diameter in inches (in)292 STARTING AND OPERATING
Page 337 of 467

Gross Axle Weight Rating (GAWR)
The GAWR is the maximum capacity of the front and rear
axles. Distribute the load over the front and rear axles
evenly. Make sure that you do not exceed either front or
rear GAWR.
WARNING!It is important that you do not exceed the maximum
front or rear GAWR. A dangerous driving condition
can result if either rating is exceeded. You could lose
control of the vehicle and have an accident. Trailer Tongue Weight (TW)
Tongue Weight is the downward force exerted on the
hitch ball by the trailer. In most cases it should not be less
than or more than 10% of the trailer load. You must
consider this as part of the load on your vehicle.
Frontal Area
Frontal Area is the maximum height and maximum
width of the front of a trailer and its cargo.
Weight-Carrying Hitch
A weight-carrying hitch supports the trailer tongue
weight, just as if it were luggage located at a hitch ball or
some other connecting point of the truck. These kinds of
hitches are the most popular on the market today and
they're commonly used to tow small- and medium-sized
trailers. STARTING AND OPERATING 335
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