STARTINGANDOPERATING
289
check tire pressure. Do not make a visual judgement
whendeterminingproperinflation.Radialtiresmaylook
properlyinflatedevenwhentheyareunderinflated.
Checktirepressuresmoreoftenifsubjecttoawiderange
of outdoor temperatures, as tire pressures vary with
temperaturechanges.
Tirepressureschangebyapproximately1psi(7kPa)per
12°F(7°C)ofairtemperaturechange.Keepthisinmind
whencheckingtirepressureinsideagarageespeciallyin
thewinter.
CAUTION!
After inspecting or adjusting the tire pressure al-
waysreinstallthevalvestemcap–ifequipped.This
will prevent moisture and dirt from entering the
valvestem,whichcoulddamagethevalvestem.
Example: If garage temperature = 68° F (20° C) and the
outside temperature = 32° F (0° C) then the cold tire
inflationpressureshouldbeincreasedby3psi(21kPa),
whichequals1psi(7kPa)forevery12°F(7°C)forthis
outsidetemperaturecondition.
5
Inflation pressures specified on the placard are always
“coldtireinflationpressure”.Coldtireinflationpressure
is defined as the tire pressure after the vehicle has not
beendrivenforatleast3hours,ordrivenlessthan1mile
Tirepressuremayincreasefrom2to6psi(13to40kPa)
duringoperation.DONOTreducethisnormalpressure
builduporyourtirepressurewillbetoolow.
(1
km) after a 3 hour period. The cold tire inflation
pressure must not exceed the maximum inflation pres-
suremoldedintothetiresidewall.
| Categories | Jeep Grand Cherokee Manuals, Jeep Manuals |
|---|---|
| Model Year | 2007 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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