EFFECT OF POLYMER, ROAD SURFACE, AND DRIVING CONDITIONS ON WEAR SURFACE CHARACTERISTICS OF TIRE TREADS

Treads made with emulsion styrene butadiene copolymer (SBR), solution SBR, polybutadieme (BR), and a 60, 40 emulsion SBR/BR mixture were built as four-way tread sections on G78-15 belted bias tires, which were driven over both concrete and gravel-textured highways and on a small, circular, concrete test track. The tires were front mounted. When driven on concrete highway, all except the BR tread had either crumbled- or liquid-appearing surfaces, thought to have been formed by mechanical degradation or fatigue. When cornered on concrete, these materials formed small cyindrical particles or rolls. The BR tread had a smooth, granular-textured surface when driven on concrete highway and a ridge or sawtooth abrasion pattern when cornered on concrete. All the materials appeared rough and torn when run on gravel-textured highway. The differences in wear surface formed on BR tread and the other three are thought to be due primarily to the relatively high resilience of BR. /Author/

  • Corporate Authors:

    American Society for Testing and Materials

    200 North Bentlar Street
    Balitmore, MD  United States  21223
  • Authors:
    • Martin, F R
    • Biddison, P H
  • Publication Date: 1973-11

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00260947
  • Record Type: Publication
  • Source Agency: Highway Safety Research Institute
  • Files: TRIS
  • Created Date: Oct 11 1974 12:00AM