Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1920-12-05
REAR TIRES OF TRUCK
MUST Be CONSIDERED
Front Ones Support Engine, and
Selection Involves Adequate Cusli-
iOninp for Motor.

Each end Of motor truck pre-
SCENTS It's own problems in the matter
OF tires. but ii is the rear end which
must receive chief attention.
me front tires support the engine.
ana the selection Of the type OF tires
10 be used Involves mainly the qucs-
tioh OF providing adequate cushiOn.ng
Tor the engine. The wear OIL III. front
tires is 80 much less than on rear
wheels.
But the choice of rear tires is n
matter for the attention Of experts.
ana nearly every truck presents
special problem. The rear wheels are
the driving wheels. and in addition
carry the greater part Of the load.
combination Of durability and
cushioning is required. and IL de-
The type OF tire whether the truck
may be- operated satisfactorily and
at a minimum expense.
There are few general principles
which may he laid down with con
sidcrabl= dchni;cHcss regarding the
rear tires. First. on most trucks OF
less than two IONS capacity the pncu-
matte tire is the proper one TO use.
On most trucks ~ more than two AMI
one-half tons capacity solids should
be used The two-tOn and two and
one-haif-ton vehicles constitute a
clnss for special study. FOR there are
som. cases In which IL would pay
the owner 10 sruip with pneuinaticS
and other circumstances under which
II would be the part OF economy to
use solids. To equip with pnenmatics
requires Il greater Investment man
to equip with solids and AN owner
should De sure before he spends the
extra money that NJ needs the special
Kind or service that pnsuinatics can
render.
II 1t tx not essential shat his trucks
make fast time or II IA" cargOoS 20 -
carried are not frasIl" hc VIII get as
x6od service from solids az from
d u A . IL
speed and extra CuSh!On!nS are vital,
hc can save more than enough
through the use 81 p.teumat.cs 10
make up for their extra cost
But the selection OF "a proper type
OF solid tire presents i problem in
Itself. and there is Il distinct trend
communication OF tires that offer the
greatest carrying capacity Small
trucks are not often overloaded. for
they are selfiimitHd as 10 load by
their small size. But beginning with
the twO-ton aud on upward the temp
tntion TO overload il always present.
With owners anxious to carry every
pound possible on a truck the most
satisfactory tire viii be found 10 be
that one which has the greatest car
rylnS capacity.
In the development OF solid tires IT
has been asCcrtaincd that the greater
the volume OF rubber. the greater tn"
carrying ability. The mass Of rubber
IN one large single re IL larger tnan
of equal nominal Size. but tho effort
to produce n satisfactory large siuglc
brought 10 light certain difficulties
which had not been encountered uu-
I'll IL was found necessary Ia use TIA"
exceptionally large mass OF rubber
required in ih"s. hiE single tires. Tn"
chief difficulties were. FIRST. the in
ability TO secure proper ulleaY" due
To failure TO get II cure throughout
the entire mass Of rubber. and, see
ohd, inability % dissip ntc the Internal
heat. generated h. the traction wave.
The production %: tn" biz Mono
twin solid tire by tho United States
Tire Company eliminated these aif-
ncult!cs. a'fordinr a p"rfcc; cur" Of
the rubber. thus assuring good mile
aK". and providing for the dissipation
o! internal heat by the dispersion OF
tho tracing wave. Before the mono
twin. large s!ngl" had plenty
or carrying capacity but too short a
life, while the dual would gIYc good
mileage II not overloaded. hu, had "A
limited carrying capacity The spc-
cIal features OF the mono-tw!n com
styles. assuring adequate mileage
and maximum carrying capacity.
The value Of the solid tire. al,
other things being equal. should b."
n;casursdT Ia terms OF lnad-carry ing
capacity. especially la tho case OF
heavily loaded trucks. N;t"r cousid-
ering quality, Gushioning nb!l!ty and
the other elements that are vital in
4 tire. the most Important thing TO
consider is its cost per pound "f
carrying capacity Because OF its
much greater mass of rubber, The
ratio OF cost for every pound Of
carrying ability in Il mono-twin. Is
only .ulS cents. whereas i IS .o23 for
duals OF ordinary type, and .v2T foi
dua.S OF the high profile type.