ASTM F1502-05e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:F1502–05
Standard Test Method for
Static Measurements on Tires for Passenger Cars, Light
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Trucks, and Medium Duty Vehicles
This standard is issued under the fixed designation F1502; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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´ NOTE—Paragraph 6.1.1 was editorially corrected in February 2005.
1. Scope 3.1.1 outside diameter, n—the maximum diameter of a tire
when it is mounted and inflated.
1.1 This test method covers methods for performing certain
3.1.2 overall width, n—the maximum cross-sectional width
mechanical static measurements on tires. The term “static”
of a tire, including protective or decorative ribs.
implies that the tire is not rotating while measurements are
3.1.3 tire weight, n—the weight of an unmounted tire
being made.
without tube or flap.
1.2 The values stated in SI units are to be regarded as
3.1.4 tread arc width, n—the length of the arc measured
standard. The values given in parentheses are for information
from one extreme of the tread design proper to the opposite
only.
extreme; that is, from shoulder to shoulder perpendicular to the
1.3 This standard does not purport to address all of the
circumferential center line.
safety concerns, if any, associated with its use. It is the
3.1.5 tread hardness, n—the hardness of an element in the
responsibility of the user of this standard to establish appro-
tread design as measured by a designated standard gage.
priate safety and health practices and determine the applica-
3.1.6 tread radius, n—the radius of a circle whose arc best
bility of regulatory limitations prior to use.
fits the tread surface when the radius template used is held
2. Referenced Documents
perpendicular to the circumferential center line of an inflated
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tire.
2.1 ASTM Standards:
3.2 For additional definitions of terms used in this test
D2240 Test Method for Rubber Property—Durometer
method, refer to Terminology F538.
Hardness
F421 Test Method for Measuring Groove andVoid Depth in
4. Significance and Use
Passenger Car Tires
4.1 Static measurements of tires are important to tire manu-
F538 Terminology Relating to the Characteristics and Per-
facturers, processing engineers, and vehicle design engineers
formance of Tires
for purposes of commerce (in consumer/vendor agreements)
F870 Practice for Tread Footprints of Passenger Car Tires
and in tire research and development.
Groove Area Fraction and Dimensional Measurements
4.2 The procedures are sufficiently detailed to achieve
F1082 Practice for Tires—Determining Precision for Test
3 commercially acceptable reproducibility among laboratories
Method Standards
and may therefore be used for specification, compliance, or
3. Terminology reference purposes.
4.3 Changes attributable to growth after inflation may be
3.1 Definitions:
obtained by comparing measurements made immediately after
inflation with those made 18 to 24 h later.
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This test method is under the jurisdiction of ASTM Committee F09 on Tires
and is the direct responsibility of Subcommittee F09.30 on Laboratory (Non-
5. Tire Marking
Vehicular) Testing.
Current edition approved Jan. 1, 2005. Published January 2005. Originally
5.1 For measurements other than weight, the tire shall be
approved in 1994. Last previous edition approved in 1999 as F1502 – 94 (1999).
marked at six equally spaced locations around the circumfer-
DOI: 10.1520/F1502-05E01.
2 ence. Starting at the DOTserial, make radial lines from bead to
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bead, perpendicular to the tread center line, at 60-degree
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
intervals. Number the resulting sections “1” through “6” in a
the ASTM website.
clockwise sequence as viewed from the side containing the
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Withdrawn. The last approved version of this historical standard is referenced
serial number.
on www.astm.org.
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F1502–05
FIG. 1 Type C: Tread Contour with a Center-Low Oxbow
FIG. 3 Overall Width Measurement
oxbow (Fig. 1)), at any circumferential location. Use a thumb-
tack if necessary. See Fig. 2.
6.2.5 Carefully align the tape around the tire circumference
so that it is parallel to the plane of the tread center line. Read
and record the indicated diameter.
FIG. 2 Outside Diameter Measurement
6.3 Overall Width:
6.3.1 Mount and condition the test tire a
...