ASTM_F_2493_-_14.pdf

Designation:F249314Standard Specification forP225/60R16 97S Radial Standard Reference Test Tire1This standard is issued under the fixed designation F2493;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the general requirements forthe P225/60R16 97S radial standard reference test tire.The tirecovered by this specification is primarily for use as a referencetire for braking traction,snow traction,and wear performanceevaluations,but may also be used for other evaluations,such aspavement roughness,noise,or other tests that require areference tire.1.1.1 Other standard reference test tires are also used forthese purposes and are referenced in Section 2.1.2 This specification provides a rim code diameter of 16standard tire design and construction,standard dimensions,andspecifies the conditions of storage.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD2240 Test Method for Rubber PropertyDurometer Hard-nessD3182 Practice for RubberMaterials,Equipment,and Pro-cedures for Mixing Standard Compounds and PreparingStandard Vulcanized SheetsE867 Terminology Relating to Vehicle-Pavement SystemsE1136 Specification for P195/75R14 Radial Standard Refer-ence Test TireF538 Terminology Relating to the Characteristics and Per-formance of TiresF2870 Specification for 315/70R22.5 154/150L RadialTruck Standard Reference Test TireF2871 Specification for 245/70R19.5 136/134M RadialTruck Standard Reference Test TireF2872 Specification for 225/75R16C 116/114S M+S RadialLight Truck Standard Reference Test Tire3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this specification,referto Terminology F538.3.1.2 all-season tread,ntread design providing dry,wet,and snow traction performance for an optimized balance foryear-round performance and which may meet the RubberManufacturers Association(RMA)definition for an M&S,M+S,M/S,MS,etc.marked tire(see RMA“Snow TireDefinitions for Passenger and Light Truck(LT)Tires”).33.1.3 pavement characteristic,nphysical feature or prop-erty of a pavement surface such as type,roughness,texture,and skid resistance.E8673.1.4 pitch,nunit of tread pattern elements used in variouscombinations to obtain optimum noise levels.3.1.5 standard reference test tire,SRTT,ntire that is usedas a control tire or surface-monitoring tire(for example,Specification E1136,F2870,F2871,and F2872 tires.)4.Design and Construction4.1 The P225/60R16 standard reference test tire shall fea-ture the steel-belted radial technology,and an all-season silicacontent tread design,see Figs.1 and 2,with technology asdescribed in Section 3 and Sections 5 7.1This specification is under the jurisdiction of ASTM Committee F09 on Tiresand is the direct responsibility of Subcommittee F09.20 on Vehicular Testing.Current edition approved June 1,2014.Published August 2014.Originallyapproved in 2006.Last previous edition approved in 2008 as F2493 08.DOI:10.1520/F2493-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from the Rubber Manufacturers Association,1400 K Street,N.W.Washington,D.C.20005.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2 The tire shall be designed to conform with the Tire andRimAssociation,Inc.(TRA)standard nominal dimensions andtolerances for cross section and overall diameter found in thecurrent TRA Yearbook.44.3 The tire used for this specification is produced byMichelin Passenger and Light Truck Tire Manufacturing.5Thetire is stamped on the sidewall with the words:“StandardReference Test Tire”and ECE(Economic Commission forEurope)and DOT(Department of Transportation)certificationmarks.4.4 Beginning in 2014,the tire is marked with an arrowwhich provides a rotational orientation for those testers whochoose to reference it.(See Fig.3.)5.Materials and Manufacture5.1 The individual standard reference test tires shall con-form to the manufacturers design standards.5.2 Tread compound,fabric processing,and all the steps intire man