RADIAL PLY TIRES - HOW DIFFERENT ARE THEY IN THE LOW LATERAL ACCELERATION REGIME

The cornering and camber stiffnesses of about 160 passenger car tires were analyzed with the objective to assess the differences between radial ply, bias belted, and bias ply tires in their linear cornering properties. Radial ply tires could be clearly distinguished from bias belted and bias ply tires on the basis of their equivalent slip angles. Bias belted and bias ply tires, however, showed strong overlap in all their cornering data. A vehicle cornering at low lateral accelerations does not exhibit distinctly different under/oversteer characteristics with the three generic tire types as long as they are not mixed. If they are mixed, large departures from the matched state may occur, particularly for radial ply/bias ply tire configurations. Large changes may also take place if tires are replaced by others of the same generic type but of different brands. /HSRI/

• Supplemental Notes:
  • Presented at the Automotive Engineering Congress and Exposition, 24-28 February 1975, held in Detroit, Michigan.
• Corporate Authors:

  Society of Automotive Engineers

  485 Lexington Avenue
  New York, NY  United States  10017
• Authors:
  • Schuring, D J
  • Roland, R D
• Publication Date: 1975

Media Info

• Features: Figures; References; Tables;
• Pagination: 16 p.

Subject/Index Terms

• TRT Terms: Acceptance tests; Radial ply tires; Statistical bias; Steering; Stiffness; Testing; Tires
• Uncontrolled Terms: Lateral loads
• Old TRIS Terms: Cornering (Vehicle); Radial tires
• Subject Areas: Geotechnology; Highways; Materials; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00096012
• Record Type: Publication
• Source Agency: Highway Safety Research Institute
• Report/Paper Numbers: SAE 750404
• Files: TRIS
• Created Date: Jul 15 1975 12:00AM