The Washington times., 1915-12-25
RIM CUTTING WILL
FOLLOW TIRE ABUSE
Protection Not Obtained by Any
Particular Type-Depends
on Design and Quality.
BY J. J. HAAS.

be obtained by any particular type Of
tire. but depends rather upon the de-
sign, quality and usage. No good tire
OF any standard type will be cut by any
standard rim, IL properly used. On the
other hand, any type of tire will be
injured IL subjected to abuse. Under
imitation dented and irregular rims,
excessive loads, tire filters and stiff re-
liners are the common causes for cut
ting and breaking above beads.
The fianges of rim may be battered
down and become rough from running
tire Dictated for considerable dis
tance; the next tire applied Is sure to
be cut above the beads.
Tires carrying heavier loads than
those for which they are designed may
develop breaking at the beads where
engaged by clinches of the rim.
IL rims become rusted from water
working around the beads when tires
are run soft or through neglected cuts
In the tires, or from neglect to put
proper fittings on the valve stem. the
rust should be removed with emery pa
per and the rims painted with a coating
of aluminium, graphite and oil. or
other good preservative solution. When
applying a tire, be careful that the flop
does not slip underneath the bead and
crowd it in clinch of the rim.
Rims of Wrong Size.
Under the impression that they are
oversize. it is not uncommon for tires
to be applied to rims of wrong size
for example. using 36x41s tire on
36x4 rim. The diameter of this rim
is approximately % inches and the
diameter of the beads of the tire at
proximately ~ inches 90. ID. Clinchcr
type), or approximately 26 inches
Irregular clinCher TYPED, therefore II
becomes necessary to stretch ana
strain the beads considerably. Anoth-
t,,,l, dc n
constructed to fit a 4-inch rim and
Clinches. Good results cannot be Sc
cured when the beads are strained
and crowded in this manner. The
correct oversize tire for S6x4 rim is
31X41a.
In some instances. 3Sx5h Y tires have
been fitted to 36x4h rims. The diam
eter of a 36x42 inch rim seat and the
diameter of .Ssx5h beads are the
same, approximately 81 inches. but
the rim cross section in the cllnches
is not suitable to accommodate the
beads of SIG inch cases-rim cutting,
pinched tubes and unsatisfactory
service will result.
When removing tires from rims, do
not overlook pushing the valve stem
of the tubes up far enough in the
tires so that II Will not be necessary
10 pound the fastening device of TIE
rims in order to release the beads JG
the cases. Rims are sometimes dent.
ed from pounding them in this way.
When chafing. cutting or breaking
extends all around the beads on both
Sides repairs are expensive and no.
to be recommended. If the injury
only extends for short distance over
one or both beads. a skillful repair
man can make a good job at Il rea
sonable cost
Tires Ridden Debated.
Running tire. debated. for any great
distance is harmful and ineXcusable.
When travelling at a very high rate OF
speed, it may then, of course. require
some little time to bring the car to
stop. A soft or fiat tire on a front
wheel can always be noticed by the
difficulty in steering the car in
straight course; the steering wheel nat
urally favors the side of the fiat or soft
tire. II on a rear wheel. pounding and
humping will be noticeable.
Demountable and quick detachab BILE
rims make it possible to change tires
very quickly. but even If not SO
equipped, 1t is wise to stop and give
the tires attention when needed. Dam
age to the side walls, beads, fabric i'm
side, also the inner tube usually makes
1t difficult to execute practical repairs.
rear tire ridden debated veIy far
may result in damage to the dlnereu-
tial of the car.
Driving In Car Tracks.
Rough streets tempt one TO drive in
car tracks. ii is more comfortable
for the passengers and may be econo-
my to protect the car, at times, from
bumps and unusual vibration by run
ninS III car tracks, rather than over
rough. cobolestone pavements, and the
tires won't be injured noticeabIy by
doing this occasionally: 1t Is the CON
tinued practice that shortens the mile
age.
Quite often the pavement along in
s'de cages OF rails is very rough and
may result in cuts TO the rubber and
bruises to the fabric. Driving over
street car track switches at the point
ed frogs may cut the tires seriously
Rails on hills are to be AVOIDED as
much as possible, as the.i usually have
sharp, thin splnters on the edges
which are liable to cut or puncture
the tires.
BE careful when driving on wet rails;
quick twisting of the front wheels may
result in accident from the rear OF
lhe car skidding sideWise when leaving
the rails
Edges OF the rails wear away the
tread rubber and cause a sharp bend
ing action of the fabric. which Will
usually develop breaks inside. 1t is
Just matter of time until the rubber
cover loosens underneath and the fab
ilc Weakens from moisture and decay
Later, an unusual bump or shock may
result IN blowout while running on
IA perfectly smooth street or road. 1t
as careless, indeed, to spoil a tire in
this manner when possible to secure
so Thuch more mileage from 1t, il used
correctly or II reversed on the Wheel
mat is the worn side turned toward
me car. competent workman can
make satisfactory repairs If only the
NOT been neglected too long.
Next weeks article by Mr. Haas
will deal with wheel Irregularities. fap-
re ruptures' and effects OF various
n