UNIFORM TIRE QUALITY GRADING TREADWEAR COURSE MONITORING

A 400-mile public highways test course in the vicinity of San Angelo, Texas was used to accumulate data for the selection of Treadwear Course Monitoring Tires and the evaluation of their performance. The testing program, which was divided into three phases, consisted of 111 tests of 6400 miles each. The test plan required that each of 29 test tire sets and 9 spare tire sets be broken-in for 800 miles on the test course. The total program (all phases) provided for the completion of 44 radial tire tests, 38 belted-bias tire tests, and 29 bias tire tests between June 1975 and June 1976. The data collected upon measuring individual tires at 800-mile increments were provided to the UTOG Test Facility Manager at San Angelo. Summaries of the resultant wear rates and projected mileages are presented with the details of the test conduct and processes.

• Corporate Authors:

  Southwest Research Institute

  6220 Culebra Road, P.O. Drawer 28510
  San Antonio, TX  United States  78228-0510

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Pierce, R N
• Publication Date: 1977-8

Media Info

• Pagination: 467 p.

Subject/Index Terms

• TRT Terms: Bias (Statistics); Durability; Durability tests; Evaluation; Field tests; Grading (Earthwork); Monitoring; Performance tests; Quality control; Radial ply tires; Tire treads; Tires; Wear
• Uncontrolled Terms: Grading; Quality
• Geographic Terms: Texas
• Old TRIS Terms: Radial tires
• Subject Areas: Geotechnology; Highways; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00167284
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DOT-HS-802-526 Final Rpt., SWRI-EFL-4155
• Contract Numbers: DOT-HS-5-01068
• Files: NTIS, TRIS, USDOT
• Created Date: Nov 23 1978 12:00AM