OPERATOR'S MANUAL

TIRESANDWHEEL
1
TREADCONTACT
WITHROAD
Proper-Ination:the
correctproleforfull
contactwiththeroad.
2
TREADCONTACT
WITHROAD
Under-Ination:
causesabnormaltire
deection,whichbuilds
upexcessiveheat,
runningtheriskof
failure.Italsocauses
irregularwear.
3
TREADCONTACT
WITHROAD
Over-Ination:
reducesthetread
contactareawith
theroadsurface,
concentratingallof
thevehicleweight
onthecenterofthe
tread.Thiscauses
prematurewearofthe
tire.
Overloadedtires
Overloadingyourtruckisasdamaging
toyourtiresasunderination.The
followingchartshowshowneglector
deliberateabusecanaffectthelifeof
yourtires.
EFFECTOFLOADPRESSUREONTIRELIFE
VehicleLoadNormal
20%Over40%Over60%Over80%Over100%Over
TirePressureNormal
20%Low30%Low35%Low45%Low55%Low
ExpectedTotalTire
Mileage
Normal
70%50%40%30%25%
Overinatedtires
Toomuchairpressurereducesthetire
treadcontactareaandresultsinrapid
wearinthecenterofthetread.
5-
137
5