Double A Trailers Gooseneck Series, Руководство пользователя

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Uniform Tire Quality Grading System
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Fundamental characteristics of tires
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Tire safety tips.
Use this information to make tire safety a regular part
of your vehicle maintenance routine. Recognize that
the time you spend is minimal compared with the
inconvenience and safety consequences of a flat tire
or other tire failure.
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Properly maintained tires improve the steering,
stopping, traction, and load-carrying capability of your
vehicle. Underinflated tires and overloaded vehicles are
a major cause of tire failure. Therefore, as mentioned
above, to avoid flat tires and other types of tire failure,
you should maintain proper tire pressure, observe
tire and vehicle load limits, avoid road hazards, and
regularly inspect your tires.
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Tire information placards and vehicle certification labels
contain information on tires and load limits. These
labels indicate the vehicle manufacturer’s information
including:
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Recommended tire size
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Recommended tire inflation pressure
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Vehicle capacity weight (VCW–the maximum
occupant and cargo weight a vehicle is designed
to carry)
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Front and rear gross axle weight ratings (GAWR–
the maximum weight the axle systems are designed
to carry).
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Both placards and certification labels are
permanently attached to the trailer near the left
front.
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Tire inflation pressure is the level of air in the tire that
provides it with load-carrying capacity and affects the
overall performance of the vehicle. The tire inflation
pressure is a number that indicates the amount of
air pressure– measured in pounds per square inch
(psi)–a tire requires to be properly inflated. (You will
also find this number on the vehicle information placard
expressed in kilopascals (kPa), which is the metric
measure used internationally.)
Manufacturers of passenger vehicles and light trucks
determine this number based on the vehicle’s design
load limit, that is, the greatest amount of weight a
vehicle can safely carry and the vehicle’s tire size. The
proper tire pressure for your vehicle is referred to as
the “recommended cold inflation pressure.” (As you will
read below, it is difficult to obtain the recommended tire
pressure if your tires are not cold.)
Because tires are designed to be used on more than one
type of vehicle, tire manufacturers list the “maximum
permissible inflation pressure” on the tire sidewall.
This number is the greatest amount of air pressure
that should ever be put in the tire under normal driving
conditions.
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It is important to check your vehicle’s tire pressure at
least once a month for the following reasons:
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Most tires may naturally lose air over time.
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Tires can lose air suddenly if you drive over a
pothole or other object or if you strike the curb
when parking.
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With radial tires, it is usually not possible to
determine under inflation by visual inspection.
For convenience, purchase a tire pressure gauge to
keep in your vehicle. Gauges can be purchased at
tire dealerships, auto supply stores, and other retail
outlets. The recommended tire inflation pressure that
vehicle manufacturers provide reflects the proper psi
when a tire is cold. The term cold does not relate to the
outside temperature. Rather, a cold tire is one that has
not been driven on for at least three hours. When you
drive, your tires get warmer, causing the air pressure
within them to increase. Therefore, to get an accurate
tire pressure reading, you must measure tire pressure
when the tires are cold or compensate for the extra
pressure in warm tires.
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1.
Locate the recommended tire pressure on the
vehicle’s tire information placard, certification label,
or in the owner’s manual.
2.
Record the tire pressure of all tires.
3.
If the tire pressure is too high in any of the tires,
slowly release air by gently pressing on the tire
valve stem with the edge of your tire gauge until
you get to the correct pressure.
4.
If the tire pressure is too low, note the difference
between the measured tire pressure and the correct
tire pressure. These “missing” pounds of pressure
Tire Safety