The Bennington evening banner. (Bennington, Vt.) 19??-1961, 1917-12-17
HOW TO INITIATE TIRES
Proper Precaution Necessary to Ac
complsh Results.

mileage he gets from his tires de.
Ponds upon the treatment they are
given.
Mileage is built into tires at the
factory by scientific methods. The
user can get every inch of that in
built mileage out of the equipment
by the proper care and use OF it.
The motorist ordinarily places so
much confidence in tire equipment,
probably because of its rapid develop
ment and wonderful performances,
that it does not receive the inspec-
tion and attention considered neces-
sary for the car, Hence the loss to
the average car owner of thirty
cents on every dollar spent for tires,
and the opportunity for these articles
which are designed to enable every
car owner, who reads them, to save
his share Of the $105,000,000 wasted
on tires each year.
1t has been aptly said that the
pneumatic tire is of the most para
doXical construction in the entire
field of automobile engineering. 1t
luuot NO Wi IOSlilGut yet
punishment worthy of armor plate.
Two tender substances, rubber and
cotton fabric, must be so blended
and built up that they will resist the
air pressure within, the weight OF
the automobile and its load without,
the thrust of the motor. the trans
verse strains on turns and the. blows
of thousands of obstacles. And upon
the successful construction OF the
tire has depended the entire success
of the automobile, "a.
While the selection of the right
type and size, correct application
and proper treatment of tires are all
the simple matter of imitation is prob
ably the most important point in the
care and use of equipment as its
abuse is the principal cause of tire
wastagc.
The judicious use OF air will go a
long way toward giving the tire user
he maximum mileage. Because the
resiliency and longwearing qualities
of tire depend almost as must up
On proper inaation as they do upon
the rubber and fabric
Too much air will cause excessive
vibration, traction slippage and loss
OF power; too little will bring on eX
cess friction between various parts
of the tire and cause them TO break
.ur ~ii4 "a as &
There is a. very. definite relation be
tween the air pressure within the
tires and the DAD on them, The
heavier weight or reduced air pres
sure causes more detection Of the
tires, giving wider tread on the
ground. and increases the action on
the sidewalks. This adds to the com
fort OF the ride as more of the road
Yihration is absorbed by the tires.
But when soft. the tire runs
against q wave in the tread rubber,
which from excessive stretching and
lfeating pulls away and separates
from. the carcass or body. The side
walls develop Ringing action as the
wheels revolve and the result is the
same as when a piece OF wire is bent
back and forth--it becomes hot and
finally breaks.
In an underinfatcd tire the heat
from the increased action Of the side
walls soften the rubber cement of adj
hesiveness between the fabric lay
ers and a certain degree of devil
canization takes place. AS result,
when the tire strikes particularly
hard bump. a loud explosion rends
the air and it is time to put on a
new casing.
A soft or fiat tire on q front wheel
can always be noticed by the Difficult
ty in steering the car in straight
course; the steering wheel naturally
favors the fiat or soft tire. If on a
rear wheel, pounding or humping
will be noticeable,
Demountable and quick detachable
rims make it possible to change tires
very quickly. but even ii not so
equipped, 1t is wise to stop and give
the tires attention Damage 10 the
sidewalks. beads, fabric inside and
the inner tube usually makes it dill
ficult to execute practicable repairs.
a rear tire ridden Debated very far
may result in damage to the differ
entail OF the car a4@
Expansion caused by hot weather
or the sun is negligible and will not
materially affect theatire, as the air
pressure within is not increased TO
any apprecieble degree, New tires
stretch slightly when lrst used and
inner tubes are. slightly permeable TO
nitrogen so that, occasional imitation
is advisable. Deterioratjng effects OF
stale air can be avoided by filing the
tires with a fresh supply at least two
or three times year. s
While there can be no infiexiblc
tables for initiation of tires as style
of construction. power. speed, road |
conditions, driving and weight will
play an important part in the strains
upon tires, under ordinary circuni
stances the tires on the front wheels
should be inflated between is to IS |
pounds per inch of tire section and |
rear tires from Is to, 20, pounds.
Don't make the mistake of guess
ing at the initiation from appearances
or striking the tires with a hammer;
but use pressure guage, at least
once week Another imitation !
warning, don't fill the tires with the
exhaust from the engine as oil and
l. = /