suit in weakening of the tire cords, which can make
the tire susceptible to further dcmqe or failure even
when under normal load and inflation conditions.
4-42. Improper and proper inflation will produce the
underinflatian md overloading.
tire section and ground cattact character sties shown
T i r e inflation should be checked
4 - 4 8 - DUAL MATCHING.
daily while cold. Do not exceed the cold inflation
pres-sures shown in Table 2-6. Tire inflation should
4-49. Proper matching of duals by size will result
a l s o be checked during road stops to locate air
i n longer tire life.
losses. Also, remove my foreign obiects iammed
the larger dimneter tire to carry a overload. This
between duals. Do not attempt to a~ust the infla-
will cause the typical overloaded tire difficulties.
tion pressure while the tires are warm.
The smaller diameter tire will also wear more rap-
A N Y LEAKS IMMEDIATELY. All tires should be
idly due to scuffing.
equipped with valve caps.
Either overinflation or underinflation will
cause premature tire failure. Overinflation weakens
the cord body of the tire by reducing its ability to
obsorb road shocks. O v e r i n f l a t i o n will also in&ce
added stresses on rims and wheels, which can cause
Inflate to correct pressure when tires are cool.
Never "bleed" tires to relieve excessive
pressure buildup when tires are warm.
4-45. Excessive bui Idup of air pressure can be due
to load, underinflation, speed, or a combination of
4 - 4 7 . Underinflatian causes rqtid wear and pre-
FIGURE 4-10. RESULT OF OVER INFLATED
mature failure. Underinflatian or overloading of tires
an my vehicle driven at sustained speeds will re-
FIGURE 4-9. PROPER TIRE INFlATION.