ASTM_F_1922_-_98_2014.pdf

Designation:F192298(Reapproved 2014)Standard Test Method forTires,Pneumatic,Vehicular,Highway1This standard is issued under the fixed designation F1922;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.INTRODUCTIONThis ASTM Standard has been developed to replace ASTM Provisional Standard PS 63-97.Theprovisional standard was approved so that the U.S.military and other government agencies couldcontinue to purchase tested and qualified tires,until F1922 had been approved.The provisionalstandard replaced the governments specification ZZ-T-381,Federal Specification,Tires,Pneumatic,Vehicular,Highway,under the former Federal Tire Program.That program was discontinued and isreplaced by the U.S.Army Tank Automotive Commands Cooperative Tire Qualification Program(CTQP).While fulfilling the militarys commercial and tactical needs,the CTQPwill continue to servefederal,state and local agencies that want to purchase qualified tires using this test method.This test method is designed to be used in conjunction with the Administrators Approval andRequirements Manual(CTQP F1922)(1),2to qualify tires for purchase primarily by the U.S.federalgovernment,military,and other state and local entities.1.Scope1.1 This test method covers comparative tire durability andtreadwear.This test method covers commercially available,over the highway pneumatic tires,new and retreaded,both tubetype and tubeless,for use on conventional passenger cars,station wagons,pursuit and emergency high speed and pursuitpassenger vehicles,light trucks,medium to heavy truck,trailers,buses,and similar vehicles normally operated onpublic roads and highways.This test method also coverscommercially available,special application light truck tires foroperation on non-improved road surfaces.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 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:3D2240 Test Method for Rubber PropertyDurometer Hard-nessF414 Test Method for Energy Absorbed by a Tire WhenDeformed by Slow-Moving PlungerF538 Terminology Relating to the Characteristics and Per-formance of TiresF1806 Practice for Tire Testing OperationsBasic Conceptsand Terminology for Reference Tire Use3.Terminology3.1 Definitions:3.1.1 alignment,nthe adjustment of various parts of thevehicles suspension system to ensure proper handling stabilityand to minimize abnormal tire treadwear.3.1.2 balancing,na process to correct for heavy or lightareas of a tire and wheel assembly.3.1.2.1 DiscussionThere are some instances where bal-ancing is done to the tire within the factory by the manufac-turer.1This test method is under the jurisdiction of ASTM Committee F09 on Tiresand is the direct responsibility of Subcommittee F09.20 on Vehicular Testing.Current edition approved Jan.1,2014.Published February 2014.Originallyapproved in 1998.Last previous edition approved in 2005 as F1922 98(2005).DOI:10.1520/F1922-98R14.2The boldface numbers in parentheses refer to the list of references at the end ofthis standard.3For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.3 bead,nof a tire,the part of a tire that comes incontact with the rim and is shaped to secure the tire to the rim.F5383.1.4 bead separation,na breakdown of bond betweentire components in the bead area.3.1.5 belt separation,na breakdown of bonding betweenthe belts or plies or tread,or combination thereof.3.1.6 break,na crack or tear extending into or through thereinforcing material.3.1.7 candidate tire,na test tire that is part of a testprogram.F18063.1.8 caravan,nfor purposes of a tire test,two or morevehicles running in the same time frame,over the same testcourse(s),under similar but independent conditions.3.1.8.1 DiscussionA caravan can have dissimilar controlgroups for each vehicle in the group with independent rotationschedules for each tire group and vehicle.A caravan isindependent and a convoy is interdependent.3.1.9 casing,nof a tire,a used or treadless tire to whichadditional tread rubber may be attached for the purpose ofretreading.F5383.1.10 control tire,na reference tire used in a specifiedmanner throughout a test program.F18063.1.11 convoy,nin tire te