ASTM F2663 - 07a

    Standard Test Method for Bead Unseating of Tubeless Tires for Motor Vehicles with GVWR of 4536 kg (10 000 lb) or Less

    Active Standard ASTM F2663 | Developed by Subcommittee: F09.30

    Book of Standards Volume: 09.02


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    Significance and Use

    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.

    1. Scope

    1.1 This test method covers the static non-rolling laboratory method of determination of a tubeless tires 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.

    1.3 The values stated in SI units are to be regarded as the 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    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


    ICS Code

    ICS Number Code 83.160.10 (Road vehicle tyres)

    UNSPSC Code

    UNSPSC Code 25172500(Tires and tire tubes)


    DOI: 10.1520/F2663-07A

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