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

Details

• Creators:
  Pierce, R. N. ; Mason, R. L. ; Hudson, K. E. ; Staph, H. E.
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.) ; Southwest Research Institute
• Subject/TRT Terms:
  Statistical Analysis Temperature Endurance Tests Tires Tire Treads
• Publication/ Report Number:
  DOT HS 806 710 ; EFL-7928-1
• 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
• File Type:
  [PDF - 5.01 MB ]