HomeMy WebLinkAboutThe Brussels Post, 1978-04-05, Page 26L._ Tread
Contact —71
With Road
Tread
Contact
With Road
. Tread
Contact I
With Road
STAGES OF INFLATION —
The cross-section upper left
shows underinflation which
causes extreme tire flexing
and builds Up excessive head,
running the risk of failure.
It also causes rapid, wear on
the outer edges of the tread.
Overinflation (upper right)
causes tires to run hard and
subjects them to impact dam-
age and weakening of the
carcass. It also causes exces-
sive wear hi the center of the
tread. Proper inflation (low-
er left) shows the correct
profile for full contact with
the road.
Overinflated
•,.110Ke
TIRE SAVINGS — Although the tire on the 'right looks
almost identical to its neighbor, the tire may wear only half
as long because, at 16 pounds pressure, it is underinflated
by 33 per cent. When radial tires were first introduced on
American automobiles, ear owners were 'told that the bulg-
ing sidewall is a built-in characteristic of the tire. Now that
the bulge has become so familiar; Motorists may be "check-
ing" radial tires by sight instead of with a gauge and run-
ning on underinflated tires that will wear out faster and
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Europeans neglect cars, too
While you're taking va-
cations, and weekend trips
-for relaxation this spring
and summer, your tires are
working full time. To do
their job effectively, they
need proper care.'
The most important part
of tire care is air and the
best part about air 'is it's
free, points out The Fire-
stone Tire & Rubber Com-
pany.
Even though air is free,
a surprising number of mo-
torists neglect their tires
when it comes to inflation.
For example, consider the
experience of a Cleveland,
Ohio, television newsman
who made a recent tire
pressure survey of eight cars
— of the, 32 tires checked,
only one had the correct air
pressure.
Pay attention to air
The point is, more people
should pay more attention
to the air pressure in their
tires on long trips, short
trips or any trip.
Too much air — over-
inflation and too little —
underinflation — mean the
tire is not carrying its load
properly. Both conditions
can cause uneven tire wear.
Underinflation is likely to
shorten the life of the tire.
Underinflated tires also
waste fuel because they put
needless drag on the engine.
How much fuel? Up to one
gallon out of 20 gallons of
gasoline, according to Fire-
stone.
Long trips increase the
possibility of underinflation
because of the added weight
of luggage and people, This
additional weight combined
with sustained high-speed
turnpike and interstate
driving means more air is
needed.
Increase air pressure
Before leaving on this
type of trip, increase the
air pressure four pounds
over the car manufacturer's
recommended cold tire pres-
sure, but not over the maxi-
mum inflation limit shown
on the tire's .sidewall.
Make your inflation
checks before starting out
because tires give higher
inflation readings after they
have been run a few miles.
Never bleed air from hot
tires because this increase in
pressure is normal. Recom-
mended "cold" inflation
levels take this increase into
account.
Wheel balance and align-
ment also should be checked
before a long trip. Both
affect tire wear.
Finally, don't forget to
check the air in the spare.
Surest signs of growing
affluence in Western Europe,
can be detected -from results
of fuel economy and emis-
sions tests recently com-
pleted in six nations,
Only a generation ago,
car ownership in Europe
was still a relative rarity,
and so those who had auto-
mobiles maintained them
carefully. Yet the test pro-
gram conducted by Cham-
pion spark Plug Company
indicates that car owners in
England, Germany, Italy,
France, Spain and. Belgium
are no more faithful to car
care than are Americans.
Approximately 6,000 cars
were tested in Europe, close
to the number champion
looked at in the United
States in its Mobile Proving
Grounds (M.P.G,) tests. In
some test areas more than
nine cars, in every 10 showed
at least one maintenance
defect that affects fuel econ-
omy or emissions. In similar
U,S, tests about 80 per cent
of the cars showed such
defects.
Other European findings
paralleled American experi-
ence as well. In tests con-
ducted in 27 U.S. cities, cars
judged to be in need of tune-
up averaged an 11.36 per
cent improvement in fuel
economy once they were
tuned, Roughly the same
fuel savings are being aver-
aged by European cars.
60—CAR CARE SECTION
Tires on job full
time in spring,
Proper inflation is key
ingredient of tire care