An investigation of a low-variability tire treadwear test procedure and of treadwear adjustment for ambient temperature. Volume 1 : the test procedures, statistical analyses, and the findings

Pierce, R. N.; Mason, R. L.; Hudson, K. E.; Staph, H. E.; John A. Volpe National Transportation Systems Center (U.S.); Southwest Research Institute

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An investigation of a low-variability tire treadwear test procedure and of treadwear adjustment for ambient temperature. Volume 1 : the test procedures, statistical analyses, and the findings

1985-01-01
By Pierce, R. N. ; Mason, R. L. ; Hudson, K. E. ; ...

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English

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Creators:

Pierce, R. N. ; Mason, R. L. ; Hudson, K. E. ; Staph, H. E.

Pierce, R. N. ; Mason, R. L. ; Hudson, K. E. ; Staph, H. E. Less -
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.) ; Southwest Research Institute

John A. Volpe National Transportation Systems Center (U.S.) ; Southwest Research Institute Less -
Subject/TRT Terms:

[+]

Statistical Analysis Temperature Endurance Tests Tires Tire Treads
Publication/ Report Number:

DOT HS 806 710 ; EFL-7928-1

DOT HS 806 710 ; EFL-7928-1 Less -
Resource Type:

Tech Report
OCLC Number:

11974344
Edition:

Final report; Jan 1984 - Jan 1985
Corporate Publisher:

United States. National Highway Traffic Safety Administration
NTL Classification:

NTL-SAFETY AND SECURITY-SAFETY AND SECURITY;NTL-SAFETY AND SECURITY-Human Factors;
Abstract:

The program was conducted to evaluate the variation in tire treadwear rates as

experienced on identical vehicles during the various environmental exposure

conditions of the winter, spring, and summer seasons. The diurnal/nocturnal effect

on the treadwear rate was evaluated by running separate but similar test samples on

the same four-car convoys.

A two-car convoy was utilized during the spring to extend the total mileage on two

of the winter test sets to 24,000 miles. A summer test of 16 test sets in exactly

the same test configuration as the previous winter test was conducted using the

same vehicles and, where possible, the same drivers.

Tread loss was measured by determining the periodic loss in tread-groove depth and

in total tire weight. Both methods were very carefully controlled.

Special investigations of (1) the effect of different drivers on treadwear results

measurement of absolute vehlcle acceleration during normal test operations) and (2) a means of determining projected mileage by using tire weight loss rates.

The report contains a statistcal analysis of the wear rates both in mils and grams per 1000 miles as they relate to the vehicle, season, environmental condition, driver, and how eight test sets each of four different manufacturer groups (total of 32 test sets) are variable within themselves. Volume 2, 542 pages, contains data pertaining to the test effort. Volume 3, 502 pages, contains data used in the statistical analysis effort. Report No. EFL-7928-4, "Determination of 100% Tire Tread Loss by Weight",

has been prepared as a supplement to this report.
Format:

PDF
Funding:

DTNH22-84-C-07106
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:ed06b57929554dabc9146bd166b975f5c0657f58ba1a8d2dff93d00496c02f37
Download URL:

https://rosap.ntl.bts.gov/view/dot/8601/dot_8601_DS1.pdf
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An investigation of a low-variability tire treadwear test procedure and of treadwear adjustment for ambient temperature. Volume 1 : the test procedures, statistical analyses, and the findings

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