THE INFLUENCE OF TIRE WEAR ON STEERING PROPERTIES AND THE CORRESPONDING STRESSES AT THE TREAD-ROAD INTERFERENCE

The paper presents data showing the effects of the state of wear, structure, load, and inflation pressure on the cornering stiffness and aligning torque stiffness of typical passenger tires. A method is introduced and applied for assessing contributions of local elements of the tread interface to the cornering force, the cornering stiffness, the aligning torque, and the aligning stiffness. There is also a further identification of the contributions to the aligning torque from fore and aft interfacial stress distributions and from lateral stress distributions. Pneumatic trail is redefined in the light of the interfacial measurements, and values are established for various operating conditions, states of wear, and tire types.

• Corporate Authors:

  Society of Automotive Engineers

  485 Lexington Avenue
  New York, NY  United States  10017
• Authors:
  • Lippmann, S A
  • Oblizajek, K L
• Publication Date: 1974

Media Info

• Pagination: 21 p.

Subject/Index Terms

• TRT Terms: Automated vehicle control; Durability tests; Load factor; Rolling contact; Steering; Tire treads; Tires; Wear
• Old TRIS Terms: Cornering (Vehicle)
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00095476
• Record Type: Publication
• Report/Paper Numbers: SAE #741102
• Files: TRIS
• Created Date: Jul 2 1975 12:00AM