2006 Mazda RX 8 Owners Manual

RX-8_8U58-EA-05J_Edition1Page340
Thursday,August2520055:0PM
Blackplate(340,1)
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.
9-16
FormNo.8U58-EA-05J
Product Specification
CategoriesMazda Manuals, Mazda RX-8 Manuals
Model Year2006
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