ASTM F421-15(2021) PDF

Scope: 1.1 This test method describes standard procedures for measuring the groove and void depth in passenger car tires. 1.2 Any mechanical, optical, or electronic device capable of measuring groove (void) depth can be used, but only the contact methodology is described here. Noncontact methodology is beyond the scope of this test method. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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.

ASTM F421-15(2021) Referenced Document

ASTM D4483 Standard Practice for Determining Precision for Test Method Standards in the Rubber and Carbon Black Industries
ASTM F1426 Standard Practice for Identifying Tire Tread Surface Irregular Wear Patterns Resulting from Tire Use
ASTM F538 Standard Terminology Relating to the Characteristics and Performance of Tires

2021 ASTM F421-15(2021) Standard Test Method for Measuring Groove and Void Depth in Passenger Car Tires
2015 ASTM F421-15 Standard Test Method for Measuring Groove and Void Depth in Passenger Car Tires
2007 ASTM F421-07(2013)e1 Standard Test Method for Measuring Groove and Void Depth in Passenger Car Tires
2007 ASTM F421-07 Standard Test Method for Measuring Groove and Void Depth in Passenger Car Tires
2000 ASTM F421-00 Standard Test Method for Measuring Groove and Void Depth in Passenger Car Tires