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ASTM F870

1994 Edition, February 15, 1994

Complete Document

Standard Practice for Tread Footprints of Passenger Car Tires Groove Area Fraction and Dimensional Measurements

Includes all amendments and changes through Reapproval Notice , 2010


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Product Details:

  • Revision: 1994 Edition, February 15, 1994
  • Published Date: January 2010
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 5
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This practice covers a technique for measuring the groove or void area of a tire tread pattern. The void area is measured on the inked impression of a tire tread statically loaded against heavyweight paper on a load platen.

This procedure is intended to serve as a reference practice for measuring groove or tread pattern void areas in a tire-footprint impression. This technique is usable by any laboratory without special equipment although more sophisticated procedures are also commonly employed, such as optical or video camera processes.

The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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.