Allmand NIGHT-LITE GR Série Manuel D'utilisation page 25

stem with the edge of your tire gauge until you get to the
correct pressure.
• Step 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 are what
you will need to add.
• Step 5: At a service station, add the missing pounds of air
pressure to each tire that is underinflated.
• Step 6: Check all the tires to make sure they have the
same air pressure (except in cases in which the front
and rear tires are supposed to have different amounts of
pressure).
If you have been driving your vehicle and think that a tire
is underinflated, fill it to the recommended cold inflation
pressure indicated on your vehicle's tire information placard
or certification label. While your tire may still be slightly
underinflated due to the extra pounds of pressure in the warm
tire, it is safer to drive with air pressure that is slightly lower
than the vehicle manufacturer's recommended cold inflation
pressure than to drive with a significantly underinflated tire.
Since this is a temporary fix, don't forget to recheck and
adjust the tire's pressure when you can obtain a cold reading.
TIRE SIZE
To maintain tire safety, purchase new tires that are the
same size as the vehicle's original tires or another size
recommended by the manufacturer. Look at the tire
information placard, the owner's manual, or the sidewall of the
tire you are replacing to find this information. If you have any
doubt about the correct size to choose, consult with the tire
dealer.
TIRE TREAD
The tire tread provides the gripping action and traction that
prevent your vehicle from slipping or sliding, especially when
the road is wet or icy. In general, tires are not safe and should
be replaced when the tread is worn down to 1/16 of an inch.
Tires have built-in treadwear indicators that let you know
when it is time to replace your tires. These indicators are
raised sections spaced intermittently in the bottom of the
tread grooves. When they appear "even" with the outside of
the tread, it is time to replace your tires. Another method for
checking tread depth is to place a penny in the tread with
Lincoln's head upside down and facing you. If you can see
the top of Lincoln's head, you are ready for new tires.
TIRE BALANCE AND WHEEL ALIGNMENT
To avoid vibration or shaking of the vehicle when a
tire rotates, the tire must be properly balanced. This
balance is achieved by positioning weights on the wheel to
counterbalance heavy spots on the wheel-and-tire assembly.
A wheel alignment adjusts the angles of the wheels so
that they are positioned correctly relative to the vehicle's
frame. This adjustment maximizes the life of your tires.
These adjustments require special equipment and should be
performed by a qualified technician.
TIRE REPAIR
The proper repair of a punctured tire requires a plug for the
hole and a patch for the area inside the tire that surrounds the
puncture hole. Punctures through the tread can be repaired
if they are not too large, but punctures to the sidewall should
not be repaired. Tires must be removed from the rim to be
properly inspected before being plugged and patched.
TIRE FUNDAMENTALS
Federal law requires tire manufacturers to place standardized
information on the sidewall of all tires. This information
identifies and describes the fundamental characteristics of the
tire and also provides a tire identification number for safety
standard certification and in case of a recall.
Information on Passenger Vehicle Tires
Please refer to Figure 23 and the information following.
23
A- 'P' indicates the tire is for passenger vehicles.
B- This three-digit number gives the width in millimeters of the
tire from sidewall edge to sidewall edge. In general, the larger
the number, the wider the tire.
C- This two-digit number, known as the aspect ratio, gives the
tire's ratio of height to width. Numbers of 70 or lower indicate
a short sidewall for improved steering response and better
overall handling on dry pavement.
D- "R" stands for radial. Radial ply construction of tires has
been the industry standard for the past 20 years.
E- This two-digit number is the wheel or rim diameter in
inches. If you change your wheel size, you will have to
purchase new tires to match the new wheel diameter.
F-
(Number) This two- or three-digit number is the tire's load
index. It is a measurement of how much weight each tire
can support. You may find this information in your owner's
manual. If not, contact a local tire dealer. Note: You may not
find this information on all tires because it is not required by
law.
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