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.
1.1 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.
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.
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
bead unseating; load machine; standardized fixture; tubeless tires; unseating; unseating block; Tires--bead unseating; Tires--tubeless; Vehicular tires;
ICS Number Code 83.160.10 (Road vehicle tyres)
ASTM International is a member of CrossRef.
Citing ASTM Standards
[Back to Top]