Evening capital news. (Boise, Idaho) 1901-1927, 1919-02-16
SUGGESTIONS FORGETT|NGFDLL
M|LEACE FROM TIRES GIVEN BY ANEXPERT

The motorist has from time to time
been approached by solicitation or
through advertisements about the adj
visibility of using certain tire access
sofies to get tire mileage. 1t is, of
course, q most desirable thing to get
the very last foot of wear out OF tire
But the owner often mistakes tire
wearing device for a tire-saving de-
vice.
In the first place, let 1t be said that
the very maximum Of tire mileage is
had from the tire when two simple
rules are followed:
!. Maintain proper pressure always.
2 Keep the tread always like new
that is, uncut or broken.
Both are easy to do, but unfortun-
ately they are not observed by the av-
erage run of automobile owners, hence
there is the need of SO many devices
to help keep prematurely worn tire
going SO the owner will get something
near the mileage he should have got
In the first place.
TREAD AND CARCASS
The tire itself is composed Of two
parts, the tread and the carcass, the
latter the inner part made Of canvas
or cord. The tread is merely the pro-
tecting means for the fabric under
meath, hence If the tread is cut or worn
through it no longer protects. Natural
wear, of course, will cause the carcass
to show through. and once it shows at
any point, the tire is on the road to
quick total destruction.
When tires tread is worn through
at any one point, for small distance.
q section may be vulcanized in to save
the tire, but where the tread wear
shows the carcass for some distance
and a sectional repair is not possible,
q retread job may be done. A retread
job consists simply of applying another
tread over the carcass, but It never
pays to retread unless the carcass is
unchanged.
Damage is not always detected by a
glance at the inside of the tire or by
Keeling. The carcass must not be brok-
en- through at any point; it must not
nave lost its body or strength by con-
tfnued flexing.
retread sometimes saves many dol
lars In tire wear. but again it often
loses for the owner many dollars be-
cause the carcass is not worth the
cost of the retread. Mileage run is no
indication of the condition Of a car
cass. 1t may have run underinflated
and might be worn through at a hid
den point A retread will cover tho
carcass all right, but it will not repair
the break. A stone bruise may not be
visible, but if it exists a new tread
won't save the tire from blowing,
SO, before you take q tire to be re-
treaded, decide first whether the car
cass is worth it. If you deal with q
reliable vulcani:i1g house or n good
garage they will undoubtedly tel YOU
whether the retread job will pay.
Some owners will retread oye- an
old tread This is Justifiabl, il the
old surface is s:nCcth, but where there
are deep deoressions the wear IN the
new tread will BE- uneven.
have d pair OF new tires with siou-
Die treads and already have got $500
miles from them, and there is li.t,e
sign of wear. This experiment was
tried with new cord tires and new nom
skid treads cemented over the new
castings. The resiliency is cut down
somewhat, even though the PRESSURE
Is 10 pounds less than the size calls
for. That, I find, is the only big OBJ
lection to the double treading in the
case of new tires.
Where the tread is worn through