ASTM F870-94(2000)
Historical Standard: ASTM F870-94(2000) Standard Practice for Tread Footprints of Passenger Car Tires Groove Area Fraction and Dimensional Measurements
SUPERSEDED (see Active link, below)
ASTM F870
1. Scope
1.1 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.
1.2 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.
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
Keywords
footprint; groove area fraction; tire footprint impression; Automobile; Dimensions; Footprints (in tires); Groove area analysis/measurement; Tire testing; Tread surface wear patterns; Voids--passenger car tires;
ICS Code
ICS Number Code 83.160.10 (Road vehicle tyres)
DOI: 10.1520/F0870-94R00
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