2007 Mazda CX 9 Owners Manual

CX-9_8V83-EA-06I_Edition3Page461
Monday,February2620077:21PM
Blackplate(461,1)
CustomerInformationandReportingSafetyDefects
UniformTireQualityGradingSystem(UTQGS)
UniformTireQualityGradingSystem(UTQGS)
ThisinformationrelatestothetiregradingsystemdevelopedbytheU.S.National
HighwayTrafficSafetyAdministrationforgradingtiresbytreadwear,traction,and
temperatureperformance.
qTreadWear
Thetreadweargradeisacomparativeratingbasedonthewearrateofthetirewhentested
undercontrolledconditionsonaspecifiedgovernmenttestcourse.
Forexample,atiregraded150wouldwearone-and-a-halftimesaswellonthegovernment
courseasatiregraded100.
Therelativeperformanceoftiresdependsupontheactualconditionsoftheiruse,however,
andmaydepartsignificantlyfromthenormbecauseofvariationsindrivinghabits,service
practicesanddifferencesinroadcharacteristicsandclimate.
qTraction-AA,A,B,C
Thetractiongrades,fromhighesttolowest,areAA,A,B,andC.Thesegradesrepresent
thetire'sabilitytostoponwetpavementasmeasuredundercontrolledconditionson
specifiedgovernmenttestsurfacesofasphaltandconcrete.AtiremarkedCmayhavepoor
tractionperformance.
WARNING
Thetractiongradeassignedtothistireisbasedonbraking(straightahead)traction
testsanddoesnotincludeaccelerationcornering(turning),hydroplaning,orpeak
tractioncharacteristics.
qTemperature-A,B,C
ThetemperaturegradesA(thehighest),B,andC,representthetire'sresistancetothe
generationofheatanditsabilitytodissipateheatwhentestedundercontrolledconditions
onaspecifiedindoorlaboratorytestwheel.
Sustainedhightemperaturecancausethematerialofthetiretodegenerateandreducetire
life,andexcessivetemperaturescanleadtosuddentirefailure.
GradeCcorrespondstoalevelofperformancewhichallpassengervehicletiresmustmeet
undertheFederalMotorVehicleSafetyStandardNo.109.GradesBandArepresent
higherlevelsofperformanceonthelaboratorytestwheelthantheminimumrequiredby
law.
9-21
FormNo.8V83-EA-06I
Product Specification
CategoriesMazda CX-9 Manuals, Mazda Manuals
Model Year2007
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