轮胎知识普利斯通.pdf

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1、1-1BasicTireFunction1-2MotorcycleTireDimensionsMotorcycletiresmustperformmainfunctions:TreadwidthSectionheight1・Theymustsupportvehicleload.TubelesstypeOverall2・Theymusttransmittractionandbrakingforcestotheroadsurface.TubetypediameterRimCrownradiusdiameter3・Theymustabsoringshocksfromthero

2、adsurface.SectionheightSectionwidth4・TheymustChanging&maintainingthedirectionoftravel.InnerlinerTubeRimwidthSectionMTtypedropcenterrimwidthRimdiameterValveThesimensionsofamotorcycletireareindicatedhere.Incontrasttoothertypesoftires,thetreadwidthofmotorcycleFourtiresisnormallywiderthanthe

3、sectionwidth.ThesectionBasicTirewidthincludedinthesizemarkingoftires.AtiremarkedFunction"120/90-18"meansthatthesectionwidthofthetireis120mm.Ｗ：Sectionwidth(mm)Ｈ：Sectionheight(mm)HMostmotorcyclerimsusedtodareMTtypedropcenterrims.Wecallthisa"hmp-up"typeofrim.thistypeofrimisusedfortubelessti

4、resbecauseithelpskeepthebeadportionofthetireinplaceevenifthetireispunctured.AbouttenyearsagowedidnothavethistypeofrimbecausemostWofthemotorcycletiresstilltubetype.Otherimportantdimensionsincludetheoveralldiameter,sectionheight,crownradiusrimdiameter.AspectSectionheight＝　　　　　　　×１００RatioSe

5、ctionwidthThe"AspectRatio"isdefinedastheratioofthesectionheightdividedbythesectionwidthmultipliedbyonehundred.1-3AccordingtoSizeDesignations1-4SpeedIndex*Inchdesignations*MetricdesignationsMaximumMaximumMaximumMaximumSpeedSpeedSpeedSpeedSpeedSpeedSpeedSpeedSpeedIndexIndexIndexIndexIndexK

6、m/hKm/hKm/hKm/h4.00H184PR130/80-1866HA15B50L120U200Casingstrength(plyrating)A210C60M130H210SpeedratingRimdiameterLoadratingA315D65N140V240Rimdiameter(inches)SpeedratingA420E70P150Z240overAspectratio(80%)A525F80Q160W270Tirewidth(inches)Tirewidth(mm)A630G90R170(W)270overA735J100S180*Alhabe

7、ticaldesignations*Racingtiredesignations(forBridgestone)A840K110T190MT90-16LOADRANGEB180/630-171-5CorrelationbetweenLaodIndex(LI)andTireLoad-Capacity(TLCC)LoadratingRimdiameter(inches)Rimdiameter(inches)Aspectratio(90%)OveralldiameterTirewidthcodeTLCCTLCCTLCCTLCCTLCCTLCCL