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ASTM F408-99(2015)

Current Reaffirmation

Standard Test Method for Tires for Wet Traction in Straight-Ahead Braking, Using a Towed Trailer

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1.1 This test method covers the measurement of braking traction of tires designed for passenger cars or light trucks. Such braking traction measurements are applicable to conditions wherein the vehicle is traveling straight ahead on a wet, paved surface.

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

1.3 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.


5.1 The measured values are traction properties of tires obtained with the towed trailer described here on a given road surface, under given environmental conditions (ambient and road surface temperature, humidity, wind speed and direction, purity and film depth of water used to wet the road surface). They are carried out in accordance with the stated test procedures and reflect the performance of the total tire-vehicle environmental system. A change in any of these factors may change the measurements on a subsequent run of the test.

5.2 These test methods are suitable for research and development purposes, where tires are compared during a single series of tests. They may not be suitable for regulatory statutes or specification acceptance, because the values obtained may not necessarily agree or correlate either in rank order or absolute traction performance level with those obtained on other road surfaces (or the same surface after additional wear), under other environmental conditions, or other towed trailers, or other test devices, or with results obtained with other test procedures.

SDO ASTM: ASTM International
Document Number F408
Publication Date May 1, 2015
Language en - English
Page Count 6
Revision Level 99(2015)
Supercedes
Committee F09.20
Publish Date Document Id Type View
Sept. 1, 2021 F0408-21 Revision
Sept. 10, 1999 F0408-99 Revision
May 1, 2015 F0408-99R15 Reaffirmation
May 1, 2008 F0408-99R08 Reaffirmation