MaintenanceandSpecifications
INFORMATIONABOUTUNIFORMTIREQUALITYGRADING
Newvehiclesarefittedwithtiresthat
havearatingonthemcalledTire
QualityGrades.TheQualitygrades
canbefoundwhereapplicableonthe
tiresidewallbetweentreadshoulder
andmaximumsectionwidth.For
example:
•
Treadwear200TractionAATemperatureA
TheseTireQualityGradesaredeterminedbystandardsthattheUnited
StatesDepartmentofTransportationhasset.
TireQualityGradesapplytonewpneumatictiresforuseonpassenger
cars.Theydonotapplytodeeptread,winter-typesnowtires,
space-saverortemporaryusesparetires,tireswithnominalrim
diametersof10to12inchesorlimitedproductiontiresasdefinedin
Title49CodeofFederalRegulationsPart575.104(c)(2).
U.S.DepartmentofTransportation-Tirequalitygrades:TheU.S.
DepartmentofTransportationrequiresFordtogiveyouthefollowing
informationabouttiregradesexactlyasthegovernmenthaswrittenit.
Treadwear
Thetreadweargradeisacomparativeratingbasedonthewearrateof
thetirewhentestedundercontrolledconditionsonaspecified
governmenttestcourse.Forexample,atiregraded150wouldwearone
andone-half(11/2)timesaswellonthegovernmentcourseasatire
graded100.Therelativeperformanceoftiresdependsupontheactual
conditionsoftheiruse,however,andmaydepartsignificantlyfromthe
normduetovariationsindrivinghabits,servicepractices,and
differencesinroadcharacteristicsandclimates.
TractionAAABC
Thetractiongrades,fromhighesttolowestareAA,A,B,andC.Thegrades
representthetire’sabilitytostoponwetpavementasmeasuredunder
controlledconditionsonspecifiedgovernmenttestsurfacesofasphaltand
concrete.AtiremarkedCmayhavepoortractionperformance.
Thetractiongradeassignedtothistireisbasedon
straight-aheadbrakingtractiontests,anddoesnotinclude
acceleration,cornering,hydroplaningorpeaktractioncharacteristics.
189
| Categories | Ford Escort Manuals, Ford Manuals |
|---|---|
| Model Year | 2002 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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