Evening star., 1935-11-03
NEW TIRES HAVE
SAFETY FEATURES
Punctures and BIoWouts
Are 0utIaWed by Manu-
faCturerS.

Whether taking delivery of new
car or contemplating purchase OF
new set of tires for ones present car
the subject of the cars rubber Is
something that is worthy of careful
consideration. Some revolutionary
changes are taking place in tires.
1t is now possible to purchase tires
that will not puncture or blow out.
These are not mere novelties, but
lines put out by the large tire makers
after years of study and develop
ment. Special inner tubes are offered
as a means of providing puncture-
proofing, while new designs in shoes
themselves result in insurance against
blowouts. Even where tires are not
designed for such complete freedom
from failure the motorist will find
safety features, not to mention assur-
ances of high mileage and low cost.
Air-Cooled Tires.
One of the new tires is both air.
cooled and equipped with a secondary
tread which comes to light when
the original one is worn off. In fact,
1t is through the use of the dual
tread that the air space for extra
cooling is provided. While the econ
omy feature is appealing, the out
standing advantage is the increase
in tire safety just at the time when
traction would otherwise be at low
ebb.
There have been some important
,tr u tn,
one of the latest versions the tread
has a corkscrew effect. In another
design there is considerable side-wall
traction, useful in touring through
muddy territory. Next Winter many
motorists will equip their cars with
the new special tires which have
tread the equal of chains. During
the past Winter this tire was extern
sively used in certain sections of the
country.
One Of the latest developments is
the plan of cutting extra lateral
grooves into brand new tires. Ma
chimes to do this work are being
leased by the largest manufacturer of
brake equipment and it will not be
long before any purchaser Of new
car can have the new tires given the
treatment that guarantees marked in
crease in traction. Due to the fact
that the new grooves lessen the pos
sibility of wheels spinning during the
starting process there is reduction
in tire tread wear in starting as well
as in stopping. Increased traction is
said to make braking much more effec-
tive. This plan, which has been in
vogue in Europe for several years,
can be used with any tire, regardless
Of tread.
How to Treat New Tires.
1t is not fully appreciated by car
owners that tires play an important
role in riding comfort. New tires of
exactly the same make, size and
quality as the originals will make a
car ride better. This is due to the
newness of the rubber Because the
new tire is more flexible greater care
should be exercised to see that it is
kept up to recommended pressure.
This should be done, not only to
prevent excessive side wall flexing,
and consequent friction, but also to
prevent too much tire tread from
being in contact with the road.
Tire pressures should be considered
In their relation to the type Of car,
the load carried. the roads travelled
over ana the action Of both the springs
and shock abSorbers. Sometimes 1t
is necessary to deviate from the tire
makers original recommendations as
to pressure. These points are not
for the motorist himself to decide
since they seldom can be determined
without recourse to testing equipment
and the guidance of experience. Nov
ing motor and body mass forward on
number of the new cars has changed
weight distribution so that pressures
cannot be regulated by the older rules.
Well heeled, new car can step
out with added distinction, while an
older car can take new lease on life.
The rubber makers have stretched
prices to a point where this can be
done with surprising ease.