1997 FORD F250 tire type

175
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[GF20600(F )01/96]
All utility-type and Four-Wheel Drive vehicles
have special design and equipment features to
make them capable of performing in a wide
variety of off-road applications. Specific design
characteristics give them higher centers of
gravity than ordinary passenger cars.
*
[GF20650(F )01/96]
RWARNING
Utility and four-wheel drive vehicles are
NOT designed for cornering at speeds as
high as passenger cars any more than
low-slung sports cars are designed to
perform satisfactorily under off-road
conditions. Avoid sharp turns or abrupt
maneuvers in these vehicles.
%
*
[GF20700(F )01/96]
Driving With a Heavy Load
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[GF20710(F )01/96]
There are limits to the amount of weight your
vehicle can carry or tow. The total weight of
your vehicle, plus the weight of the passengers
and cargo, should never be more than the Gross
Vehicle Weight Rating (GVWR). Also, the weight
that your vehicle carries over the front axle and
rear axle should never be more than the Gross
Axle Weight Rating (GAWR) for the respective
axle.
*
[GF20715(F )01/96]
The weight limits of your vehicle's tires affect
the GVWR or GAWR limitations. Usage of
replacement tires with higher weight limits than
originals does not increase GVWR or GAWR.
Usage of lower capacity replacement tires may
lower GVWR and GAWR limitations.
*
[GF20720(F )01/96]
RWARNING
Do not exceed the GVWR or the GAWR
specified on the Safety Compliance
Certification Label.
File:09ltgff.ex
Update:Thu May 30 15:25:49 1996
ProCarManuals.com

177
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[GF20750(F )01/96]
one third page art:0020774-A
Cargo tie-down bars - Flareside pickup box
*
[GF20770(F )05/96]
Trailer Towing
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[GF20772(FM)03/96]
All vehicles may tow a Class I trailer provided
the Gross Combined Weight (GCW) is less than
or equal to the GVWR shown on the Safety
Compliance Certification Label. For heavier
trailer applications, refer to the towing
information found later in this chapter.
*
[GF20775(FM)01/96]
Towing a trailer puts additional loads on your
vehicle's engine, transmission, axle, brakes, tires
and suspension. For your safety and for the
good of your vehicle, use the right equipment
for the type of trailer you tow.
[GF20780(F )01/96]
If your trailer is equipped with electric brakes,
auxiliary battery, or back-up lamps, the optional
7 wire trailer towing electrical hook-up will be
required on the vehicle.
File:09ltgff.ex
Update:Thu May 30 15:25:49 1996
ProCarManuals.com

183
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[GF21090(FM)01/96]
Passenger car type tires when installed on light
trucks and multipurpose passenger vehicles are
rated at 10% lower load carrying capacity due to
the differences in vehicle usages.
*
[GF21100(F )01/96]
The vehicle must not be loaded to both the front
and rear GAWR because the GVWR will be
exceeded. The GAWR of the front and rear axles
exceeds the GVWR when added together to
allow flexibility in fore and aft loading of cargo.
*
[GF21110(FM)03/96]
With the tires inflated to the specified pressure,
the total weight of your vehicle must not exceed
the GVWR and GAWR specified on the Safety
Compliance Certification Label. This includes full
fuel tank(s), vehicle equipment, and occupants as
well as the cargo load.
*
[GF21120(FM)01/96]
GCWR (Gross Combined Weight Rating)
*
[GF21130(FM)01/96]
GCWR is the maximum combined weight of the
towing vehicle (including passengers and cargo)
and the loaded trailer. The GCWR is specified
by the manufacturer to indicate the combined
maximum loaded weight that the vehicle is
designed to tow.
*
[GF21140(FM)01/96]
Maximum Trailer Weight Rating
*
[GF21150(FM)01/96]
The maximum trailer weight rating is the
maximum weight of a trailer the vehicle is
permitted to tow. It is specified by the
manufacturer and is determined by subtracting
the vehicle curb weight for each
engine/transmission combination, any required
option weight for trailer towing and the weight
of the driver from the GCWR for the towing
vehicle.
File:09ltgff.ex
Update:Thu May 30 15:25:49 1996
ProCarManuals.com

289 %
*
[MC26850(FM)01/96]
Replacing the Tires
*
[MC26900(FM)01/96]
Replace any tires that show wear bands. When
your tire shows a wear band, it has only 1/16
inch (2 mm) of tread left.
*
[MC26950(FM)01/96]
quarter page art:0060006-A
Wear band
*
[MC27000(FM)02/96]
Because your vehicle's tires may wear unevenly,
you may need to replace them before a wear
band appears across the entire tread.
*
[MC27100(FM)01/96]
RWARNING
When replacing full size tires, never mix
radial, bias-belted, or bias-type tires. Use
only the tire sizes that are listed on the
tire pressure decal. Make sure that all tires
are the same size, speed rating, and
load-carrying capacity. Use only the tire
combinations recommended on the decal.
If you do not follow these precautions,
your vehicle may not drive properly and
safely.
*
[MC27350(FM)01/96]
Tires that are larger or smaller than your
vehicle's original tires may also affect the
accuracy of your speedometer.
File:11ltmcf.ex
Update:Tue May 28 08:52:04 1996
ProCarManuals.com

290 %
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[MC27360(FM)01/96]
Information About Tire Quality Grades
*
[MC27370(FM)01/96]
New vehicles are fitted with tires that have their
Tire Quality Grade (described below) molded
into the tire's sidewall. These Tire Quality
Grades are determined by standards that the
United States Department of Transportation has
set.
*
[MC27380(FM)01/96]
Tire Quality Grades apply to new pneumatic
tires for use on passenger cars. They do not
apply to deep tread, winter-type snow tires,
space-saver or temporary use spare tires, tires
with nominal rim diameters of 10 to 12 inches or
limited production tires as defined in Title 49
Code of Federal Regulations Part 575.104(c)(2).
[MC27390(FM)03/96]
U.S. Department of Transportation Ð Tire
quality grades:The U.S. Department of
transportation requires Ford to give you the
following information about tire grades exactly
as the government has written it.
%*
[MC27410(FM)01/96]
Treadwear
*
[MC27420(FM)01/96]
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
government test course. For example, a tire
graded 150 would wear one and one-half (1 1/2)
times as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart significantly from the
norm due to variations in driving habits, service
practices and differences in road characteristics
and climate.
File:11ltmcf.ex
Update:Tue May 28 08:52:04 1996
ProCarManuals.com

292
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[MC27480(FM)03/96]
RWARNING
Driving too fast for conditions creates the
possibility of loss of vehicle control.
Driving at very high speeds for extended
periods of time may result in damage to
vehicle components.
%*
[MC28000(F )01/96]
Snow Tires and Chains
*
[MC28050(F )03/96]
The tires on your vehicle have all-weather treads
that provide traction in rain or snow. However,
during the winter months in some climates, you
may need to use snow tires and occasionally
chains for your tires.
*
[MC28100(F )01/96]
RWARNING
Snow tires must be the same size and
grade as the tires you currently have on
your vehicle.
*
[MC28150(F )01/96]
Use chains on the tires only in an emergency or
if the law requires them where you live. If you
choose to use chains on your vehicle's tires, be
aware of the following:
*
[MC28200(F )01/96]
q
Make sure the chains are the right size for
your tires. Use only SAE Class ªSº chains.
Other types may damage your vehicle.
*
[MC28250(F )01/96]
q
Put the chains on tightly with the ends held
down securely. Verify that no chain touches
any wiring, brake lines, or fuel lines. Follow
the chain manufacturer's instructions.
*
[MC28300(F )01/96]
q
Drive slowly. If you can hear the chains rub
or bang against your vehicle, stop the vehicle
and tighten the chains. If you continue to
hear the chains rub or bang against your
vehicle, remove the chains to prevent damage
to your vehicle.
File:11ltmcf.ex
Update:Tue May 28 08:52:04 1996
ProCarManuals.com