SASO 2252-2004 Motor Vehicles Types Treadwear, Traction

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1、SASO2252MOTORVEHICLESTYRESTREADWEAR,TRACTIONANDTEMPERATURERESISTANCEGRADINGMOTORVEHICLESTYRESTREADWEAR,TRACTIONANDTEMPERATURERESISTANCEGRADINGICS:DateofSASOBoardofDirectors’Approval:DateofPublicationintheOfficialGazette:DateofEnforcementofthisStandard:SAUDIARABIANSTANDARDSASO2252/2004MOTORVEHICLEST

2、YRESTREADWEAR,TRACTIONANDTEMPERATURERESISTANCEGRADING1-SCOPEANDFIELDOFAPPLICATIONThisstandardisconcernedwiththetreadwear,tractionandtemperatureresistancegradingoftiresforuseonpassengercarsandmulti-purposepassengervehicles.Thetemporarysparetyresareexemptedfromtherequirementsofthisstandards.2-COMPLEM

3、ENTARYREFERENCES2.1SASO400/1984“MotorVehicles-ConformityCertificates”.2.2SASO..../....“MotorVehiclesTyres-MethodsofTestingofTireTreadwear”.2.3SASO..../....“MotorVehiclesTyres-MethodsofTestingofTireTractionGrading”.2.4SASO..../....“MotorVehiclesTyres-MethodsofTestingofTireTemperatureResistanceGradin

4、g”.3-DEFINITIONS3.1PassengercarAmotorvehiclewithamotivepowerdesignedtocarryninepersonsandtheirluggageorlessincludingthedriver.3.2Multi-PurposePassengerVehicleAmotorvehicle,designedtocarrytenpersonsorlesswhichisconstructedeitheronatruckchassisorwithspecialfeaturesforoccasionaloff-roadoperation.3.3Co

5、nstructionTheinternalstructureofthetiresuchascordangles,numberandplacementofbreakers.3.4MaterialsThesubstancesusedinmanufactureofthetiresuchasbeltfiber,rubbercompound,etc.3.5DesignThepropertiesorconditionsimposedbythetiremold,suchasaspectratio,treadpattern,etc.1SAUDIARABIANSTANDARDSASO2252/20043.6T

6、readThepartofatirewhichnormallycomesincontactwiththegroundandconsistsofribsandgrooves.3.7SidewallThepartofatirebetweenthetreadandthebead.3.8PlyAlayerofrubbercoatedparallelcords.3.9CordThestandsformingthepliesinthetire.3.10BeadseparationAbreakdownofbondbetweencomponentsinthebeadarea.3.11ChunkingTheb

7、reakingawayofpiecesofthetreadorsidewall.3.12CrackingAnypartingwithinthetread,sidewallorinnerlinerofthetireextendingtocordmaterial.3.13CT(SpecialTire)Apneumatictirewithaninvertedflangetireandrimsysteminwhich