The purpose of the wear testing was (a) to confirm the proposed Uniform Tire Quality Grading procedure, as published in the Federal Register on March 7, 1973, using the 7.75-14 (2 ply rayon) size as the control tire; (b) to confirm the suitability of using a single size control tire (7.75-14) as the treadwear reference base for a range of sizes (i.e. D78-14, F78-14, H78-14, etc.); (c) to determine whether similar treadwear ratings are obtained when specific size tire (D78-14) is tested at different inflation pressures using respective Tire and Rim loads (i.e. 24 lbs inflation - 1120 lbs load vs 32 lbs inflation - 1320 lbs load); (d) to develop a treadwear route where the control tire will be worn 75 plus or minus 10% after 16000 route miles.

  • Corporate Authors:

    Compliance Testing Incorporated

    P.O. Box 351
    Ravenna, OH  United States  44266

    National Highway Traffic Safety Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Shearer, J E
  • Publication Date: 1975-3

Media Info

  • Pagination: 98 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00090553
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: Final Rpt.
  • Contract Numbers: DOT-HS-4-00811
  • Files: NTIS, USDOT
  • Created Date: May 29 1975 12:00AM