ASTM F2663-15

Standard Test Method for Bead Unseating of Tubeless Passenger and Light Truck Tires

SIGNIFICANCE AND USE
5.1 This test method establishes a standard procedure for the test and provides data that can be related to the force required to unseat the bead of a tire inflated with a specified pressure from the rim. This test method does not establish performance limits or tolerances for tire specifications.
SCOPE
1.1 This test method covers the static non-rolling laboratory method of determination of a tubeless tire’s resistance to bead unseating. The test requires the use of a standardized fixture and load machine. The test is conducted using a defined test pressure and method of determining the resultant force to unseat the tire from the rim.  
1.2 This test method is applicable for all passenger, light truck, and temporary spare tires.  
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2015
• ICS: 83.160.10 - Road vehicle tyres
• Technical Committee: F09 - Tires
• Drafting Committee: F09.30 - Laboratory (Non-Vehicular) Testing

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F2663 − 15
Standard Test Method for
Bead Unseating of Tubeless Passenger and Light Truck
1
Tires
This standard is issued under the fixed designation F2663; 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.
1. Scope 3.1.3 manufacturer, n—of a tire, the name of a company or
wholly owned subsidiary making the tire. F538
1.1 This test method covers the static non-rolling laboratory
3.1.4 measuring rim, n—any“rim”withawidthasspecified
method of determination of a tubeless tire’s resistance to bead
for the design or measuring rim for a particular tire size
unseating. The test requires the use of a standardized fixture
designation, and with the “bead” seat and flange dimensions in
and load machine. The test is conducted using a defined test
accordance with publications of tire and rim standards organi-
pressure and method of determining the resultant force to
zations current at the time of manufacture. F538
unseat the tire from the rim.
3.1.5 outside diameter, n—the maximum diameter of a tire
1.2 This test method is applicable for all passenger, light
when it is mounted and inflated. F538
truck, and temporary spare tires.
3.1.6 overall width, n—the maximum cross-sectional width
1.3 The values stated in SI units are to be regarded as
of a tire, including protective or decorative ribs. F538
standard. The values given in parentheses are for information
3.1.7 rim, n—the specially shaped circular periphery to
only.
which a tire may be mounted with appropriate bead fitment.
1.4 This standard does not purport to address all of the
F538
safety concerns, if any, associated with its use. It is the
3.1.8 rim, test, n—a rim having the configuration and
responsibility of the user of this standard to establish appro-
dimensions suitable for use with a test tire in accordance with
priate safety and health practices and determine the applica-
publications of a tire and rim standards organization current at
bility of regulatory limitations prior to use.
the time of tire manufacture. F538
2. Referenced Documents
3.1.9 sidewall, of a tire, n—thatportionofatirebetweenthe
2
2.1 ASTM Standards: tread and the bead. F538
F538 Terminology Relating to the Characteristics and Per-
3.1.10 specified design section width, n—width specified in
formance of Tires
the publications of tire and rim standards organizations current
F1502 Test Method for Static Measurements on Tires for
at the time of manufacture for a new tire of that size
Passenger Cars, Light Trucks, and Medium Duty Vehicles
designation and type when inflated on its “measuring rim.”
F538
3. Terminology
3.1.11 tire, light truck, n—a tire of a group prescribed in
3.1 Definitions:
“Light Truck” or “Commercial” tire sections of industry
3.1.1 bead, of a tire, n—part of a tire that comes in contact
standards manuals such as The European Tyre and Rim
with the rim and is shaped to secure the tire to the rim. F538
Technical Organisation (ETRTO), Japan Automobile Tyre
3.1.2 bead unseating block, n—machined block of cast
Manufacturers Association (JATMA), and The Tire and Rim
aluminum used on the bead unseating fixture to press against
Association (TRA). The tire will typically have either “LT” or
the tire sidewall. F538
“C” (C-type) as part of the tire size designation.
3.1.11.1 Discussion—An LTtire is a light truck tire with the
1
letters “LT” either as a prefix or suffix of the tire size
This test method is under the jurisdiction of ASTM Committee F09 on Tires
and is the direct responsibility of Subcommittee F09.30 on Laboratory (Non-
nomenclature. These tires are typically standardized by
Vehicular) Testing.
JATMAorTRA.AC-typetireisalighttruck(commercial)tire
CurrenteditionapprovedJune1,2015.PublishedJuly2015.Originallyapproved
with the letter “C” as a suffix to the tire size nomenclature.
in 2007. Last previous edition approved in 2007 as F2663 – 07a. DOI: 10.1520/
These tires are standardized by ETRTO, and located in the
F2663-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
“Commercial” tire section of the Standards Manual.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3.1.12 tire, passenger car, n—a tire of a group prescribed in
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. a passenger tire section of industry standards manuals such as
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F2663 − 15
The EuropeanTyre and RimTechnical Organisation (ETRT
...

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: F2663 − 07a F2663 − 15
Standard Test Method for
Bead Unseating of Tubeless Tires for Motor Vehicles with
GVWR of 4536 kg (10 000 lb) or LessPassenger and Light
1
Truck Tires
This standard is issued under the fixed designation F2663; 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.
1. Scope
1.1 This test method covers the static non-rolling laboratory method of determination of a tubeless tire’s resistance to bead
unseating. The test requires the use of a standardized fixture and load machine. The test is conducted using a defined test pressure
and method of determining the resultant force to unseat the tire from the rim.
1.2 This test method is applicable for all passenger, light truck, and temporary spare tires used on motor vehicles with 4536 kg
(10 000 lb) Gross Vehicle Weight Rating (GVWR) or less.tires.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.4 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
F538 Terminology Relating to the Characteristics and Performance of Tires
F1502 Test Method for Static Measurements on Tires for Passenger Cars, Light Trucks, and Medium Duty Vehicles
3. Terminology
3.1 Definitions:
3.1.1 bead, of a tire, n—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 bead unseating block, n—machined block of cast aluminum (also known as “shoe”) used on the bead unseating fixture
to press against the tire sidewall. F538
3.1.3 elements, n—an isolated (totally bounded by void) projection. F538
3.1.3 manufacturer, of a tire, n—of a tire, the name of a company or wholly owned subsidiary making the tire. F538
3.1.4 measuring rim, n—any “rim” with a width as specified for the design or measuring rim for a particular tire size
designation, and with the “bead” seat and flange dimensions in accordance with publications of tire and rim standards organizations
current at the time of manufacture. F538
3.1.5 outside diameter, n—the maximum diameter of thea tire when it is mounted and inflated. F538
3.1.6 overall width, n—the maximum cross-sectional width of a tire, including protective or decorative ribs. F538
3.1.7 rim, n—the specially shaped circular periphery to which a tire may be mounted with appropriate bead fitment. F538
3.1.8 rim, test, n—a rim having the configuration and dimensions suitable for use with a test tire in accordance with publications
of a tire and rim standards organization current at the time of tire manufacture. F538
3.1.9 sidewall, of a tire, n—that portion of a tire between the tread and the bead. F538
1
This test method is under the jurisdiction of ASTM Committee F09 on Tires and is the direct responsibility of Subcommittee F09.30 on Laboratory (Non-Vehicular)
Testing.
Current edition approved Dec. 15, 2007June 1, 2015. Published January 2008July 2015. Originally approved in 2007. Last previous edition approved in 2007 as
F2663 – 07.F2663 – 07a. DOI: 10.1520/F2663-07A.10.1520/F2663-15.
2
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 ----------------------
F2663 − 15
3.1.10 specified design section width, n—width specified in the publications of tire and rim standards organizations current at
the time of manufacture for a new tire of that size designation and type when inflated on its “measuring rim.” F538
3.1.11 tire, light truck, n—a tire of a group prescribed in “Light Truck” or “Commercial” tire sections of industry standards
manuals such as The European Tyre and Rim Technical Organisation (ETRTO), Japan Automobile Tyre Manufacturers Association
(JATMA), and The Tire and Rim Association (TRA). The tire will typically have either “LT” o
...