ASTM F1923-21

Standard Test Method for Tires, Pneumatic, Low Speed, Off Highway

SIGNIFICANCE AND USE
4.1 This test method establishes a standard procedure of comparative testing, for tire strength and dimensional characteristics, for use under the Administrator's Cooperative Approved Tire List (CATL) (2).
SCOPE
1.1 This test method covers measurements for comparative tire strength and dimensional characteristics. This test method covers new and retreaded pneumatic tires, both tube and tubeless types, and flaps when applicable, for mounting on construction, earthmoving, mining and logging equipment, graders, mobile cranes, and similar vehicles operated at low speeds off the road.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Aug-2021
• ICS: 83.160.99 - Other tyres
• Technical Committee: F09 - Tires
• Drafting Committee: F09.20 - Vehicular Testing

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F1923 − 21
Standard Test Method for
1
Tires, Pneumatic, Low Speed, Off Highway
This standard is issued under the fixed designation F1923; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
In 1998, the standards used for the U.S. Army’s Cooperative Tire Qualification Program (CTQP),
which replaced the Federal Tire Program, were officially approved by ASTM. This ASTM Standard
has been developed to serve federal, 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 Administrator’s Approval and
2
Requirements Manual for Tires, Pneumatic, Low Speed, Off Highway (CTQP F1923) (1), to qualify
tires for purchase by the U.S. federal government, military, and other state and local entities.
1. Scope 2. Referenced Documents
3
2.1 ASTM Standards:
1.1 This test method covers measurements for comparative
F538 Terminology Relating to Characteristics and Perfor-
tire strength and dimensional characteristics. This test method
mance of Tires
covers new and retreaded pneumatic tires, both tube and
tubeless types, and flaps when applicable, for mounting on
3. Terminology
construction, earthmoving, mining and logging equipment,
3.1 Definitions:
graders, mobile cranes, and similar vehicles operated at low
3.1.1 bead, n—of a tire, the part of a tire that comes in
speeds off the road.
contact with the rim and is shaped to secure the tire to the rim.
1.2 The values stated in SI units are to be regarded as the
F538
standard. The values given in parentheses are for information
3.1.2 groove, n—a void that is relatively narrow compared
only.
to its length. F538
1.3 This standard does not purport to address all of the
3.1.3 groove (void) depth [L], n—measurement of the per-
safety concerns, if any, associated with its use. It is the
pendicular distance from a real or calculated reference defined
responsibility of the user of this standard to establish appro- by edges of two adjacent ribs (lugs) to the lowest point of
priate safety, health, and environmental practices and deter-
contact in the groove (void). F538
mine the applicability of regulatory limitations prior to use.
3.1.4 load index, n—a numerical code associated with the
1.4 This international standard was developed in accor-
maximum load a tire can carry at the speed indicated by its
dance with internationally recognized principles on standard-
speed symbol under specified conditions. F538
ization established in the Decision on Principles for the
3.1.5 load symbol, n—a code associated with the maximum
Development of International Standards, Guides and Recom-
load a tire can carry at the speed indicated by its speed symbol
mendations issued by the World Trade Organization Technical
under specified conditions. F538
Barriers to Trade (TBT) Committee.
2 2
1
3.1.6 nominal plunger energy, ⁄2 [ML /T ], n—in tire
testing, one half of the product of a peak force (required to
rupture the tire structure in the tread area) and maximum
1
This test method is under the jurisdiction of ASTM Committee F09 on Tires
plunger travel into a tire at the time of rupture. F538
and is the direct responsibility of Subcommittee F09.20 on Vehicular Testing.
Current edition approved Sept. 1, 2021. Published October 2021. Originally
3
approved in 1998. Last previous edition approved in 2014 as F1923 – 98 (2014). For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/F1923-21. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2
The boldface numbers in parentheses refer to the list of references at the end of Standards volume information, refer to the standard’s Document Summary page on
this standard. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F1923 − 21
3.1.7 outside diameter, n—the maximum diameter of a tire 5.1.3 Overall Width: The overall width is the average
when it is mounted and inflated. F538 maximum width of the inflated tire including the sidewalls,
side ribs, bars, decorations, letters, or numerals. The width
3.1.8 overall width, n—the maximum cross-sectional width
shall be measured to the nearest 0.25 mm (0.01 in.) at six
of a tire, including protective or decorative ribs. F538
equally spaced, different points around the
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F1923 − 98 (Reapproved 2014) F1923 − 21
Standard Test Method for
1
Tires, Pneumatic, Low Speed, Off Highway
This standard is issued under the fixed designation F1923; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This ASTM Standard has been developed to replace ASTM Provisional Standard PS 86-97. The
Provisional Standard was approved so that the U.S. military and other government agencies could
continue to purchase tested and qualified tires, until In 1998, the standards used for F1923 had been
approved. The provisional standard replaced the government’s specification ZZ-T-1083, the Federal
Specification, Tires, Pneumatic, Low Speed, Off Highway, under the former Federal Tire Program.
That program was discontinued and is replaced by the U.S. Army Tank Automotive Command’s U.S.
Army’s Cooperative Tire Qualification Program (CTQP). While fulfilling the military’s commercial
and tactical needs, the CTQP will continue (CTQP), which replaced the Federal Tire Program, were
officially approved by ASTM. This ASTM Standard has been developed to serve federal, 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 Administrator’s Approval and
2
Requirements Manual for Tires, Pneumatic, Low Speed, Off Highway (CTQP F1923) (1), to qualify
tires for purchase by the U.S. federal government, military, and other state and local entities.
1. Scope
1.1 This test method covers measurements for comparative tire strength and dimensional characteristics. This test method covers
new and retreaded pneumatic tires, both tube and tubeless types, and flaps when applicable, for mounting on construction,
earthmoving, mining and logging equipment, graders, mobile cranes, and similar vehicles operated at low speeds off the road.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
3
2.1 ASTM Standards:
1
This test method is under the jurisdiction of ASTM Committee F09 on Tires and is the direct responsibility of Subcommittee F09.20 on Vehicular Testing.
Current edition approved Jan. 1, 2014Sept. 1, 2021. Published February 2014October 2021. Originally approved in 1998. Last previous edition approved in 20052014 as
F1923 – 98 (2005).(2014). DOI: 10.1520/F1923-98R14.10.1520/F1923-21.
2
The boldface numbers in parentheses refer to the list of references at the end of this standard.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F1923 − 21
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension
F538 Terminology Relating to Characteristics and Performance of Tires
3. Terminology
3.1 Definitions:
3.1.1 bead, n—of a tire, the part of a tire that comes in contact with the rim and is shaped to secure the tire to the rim. F538
3.1.2 groove, n—a void that is relatively narrow compared to its length. F538
3.1.3 groove (void) depth, depth [L], n—measurement of the perpendicular distance from a real or calculated reference defined
by edges of two adjacent ribs (lugs) to the lowest point of contact in the groove (void). F538
3.1.4 load index, n—a numerical code associated with the maximum load a tire can carry at the speed indicated by its speed
...