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1、IS15627:2005[SupersedinglS10914(Partl):1991IS10914(Part4):1992IS10914(Part5):19951Sl1157:1984lS12151:19871IndianStardAUTOMOTIVEVEHICLES—PNEUMATICTYRESITWOTHREEWHEELEDMOTVEHICLES—SPECIFICATIONICS83.160.10(3BIS2005BUREAUOF

2、INDIANSTARDSMANAKBHAVAN9BAHADURSHAHZAFARMARGNEWDELHI110002December2005PriceGroup9IS15627:2005IndianStardAUTOMOTIVEVEHICLES—PNEUMATICTYRESFTWOTHREEWHEELEDMOTVEHICLES—SPECIFICATION1SCOPEThisstardprescribesthegeneraldimensi

3、onalperfmancerequirementsofnewpneumatictyresftwothreewheeledmotvehicles.2REFERENCESThefollowingstardscontainprovisionswhichthroughreferenceinthistextconstituteprovisionsofthestard.Atthetimeofpublicationtheeditionsindicat

4、edwerevalid.Allstardsaresubjecttorevisionpartiestoagreementsbasedonthisstardareencouragedtoinvestigatethepossibilityofapplying~hemostrecenteditionsofthestardsindicatedbelow:ISNo.Title10694Generalrequirementsfrimsfautomot

5、ivevehicles:(Part4):1983Scootersscooterderivative(Part5):1987Mopedmotcyclemotcyclederivativerims3TERMSDEFINITIONSNOMENCLATURE3.1Bead—Partofthepneumatictyretheshapestructureofwhichenablesittotittherimholdthetyreonthatrim(

6、seeFig.1).3.2Carcass—Partofthepneumatictyreotherthanthetreadtherubbersidewallswhichwheninflatedbearstheload(seeFig.1).3.3Chunking—Breakingawayofpiecesofrubberfromthetyretread.3.4Cds—Strsfmingthefabricofthepliesinthepneum

7、atictyre(seeFig.1).3.5CdSeparation—Partingofthecdstiomtheirrubbercoating.3.6LoadIndex—Afigureassociatedwiththemaximumpermissibleloadwhichatyrecancarryatthespeedcrespondingtoitsspeedsymbolaccdingtotheoperatingconditionssp

8、ecifiedbythemanufacturer.AnnexAcontainsalistofindicesthecrespondingloads(seeTable1).3.7MaximumLoadRating—Maximummasswhichatyreisratedtocarrysubjecttothefollowinga)b)c)d)Fspeedlowerequalto130kmlhthemaximumloadratingshalln

9、otexceedthepercentageofthevalueassociatedwiththerelevantloadcapacityindexofthetyreasindicatedinTable2(see3.21)withreferencetothespeedcategysymbolofthe~rethespeedcapabilityofthevehicletowhichthetyreisfitted.Fspeedabove130

10、Ianhbutnotexceeding210kmhthemaximumloadratingshallnotexceedthevalueofthemassassociatedwiththeloadcapacityindexofthetyreInthecaseoftyresdesignedfaspeedexceeding210kmhbutnotexceeding270lcdhthemaximumloadratingshallnotexcee

11、dthepercentageof.themassassociatedwiththeloadcapacityindexfthetyresetoutinTable3withreferencetothespeedcategysymbolofthetyrethemaximumdesignspeedofthevehicletowhichthetyreistobefitted(seeTable3).Fspeedsinexcessof270kmhth

12、emaximumloadratingshallnotexceedthemassspecifiedbythetyremanufacturerwithreferencetothespeedcapabilityofthetyre.Fintermediatespeedsbetween270kmhthemaximumspeedpermittedbythetyremanufactureralinearinterpolationoftheloadra

13、tingapplies.3.8MeasuringRim—Rimonwhichatyreshallbefittedfdimensionalmeasurementpurposes.3.9NominalAspectRatio(R)—Hundredtimestheratio.ofthenominalsectionheighttothenominalsectionwidthofthetyreonitstheeticalrim.3.10Nomina

14、lRimDiameter—Diameteroftherimonwhichatyreisdesignedtobemounted(seeFig.1).3.11PrincipalGroove—widegrooveslocatedinthecentralzoneofthetread.3.12OuterDiameter(D)—Overalldiameterof~inflatednewtyre(seeFig.1).3.13OverallWidth—

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