VEHICLE-IN-USE LIMIT PERFORMANCE AND TIRE FACTORS. THE TIRE IN USE. APPENDIX A,B,C

The influence of tire-in-use factors (inflation pressure, replacement mixes, and wear) on the steering and braking response of automobiles is examined through analysis, simulation, laboratory and over-the-road tire testing, and vehicle testing. Results for a 1971 Mustang and a 1973 Buick station wagon illustrate the influence of tire-in-use factors on (a) the open-loop braking and/or turning performance in drastic maneuvers on wet and dry surfaces, and (b) the understeer/oversteer factor for maneuvers involving lateral accelerations below 0.3 g. The investigation shows that differences in tire mechanical properties between the front and rear wheels (as caused by tire-in-use factors) can cause significant and potentially dangerous changes in limit response and from the stability and control characteristics intended by the vehicle manufacturer.

• Supplemental Notes:
  • See also PB-240 783 and PB-241 129.
• Corporate Authors:

  Highway Safety Research Institute

  Huron Parkway and Baxter Road
  Ann Arbor, MI  United States  48109

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • BERNARD, J E
  • Fancher Jr, P S
  • Gupta, R
  • Moncarz, H
  • Segel, L
• Publication Date: 1975-3

Media Info

• Pagination: 264 p.

Subject/Index Terms

• TRT Terms: Analysis; Braking; Durability; Inflation; Loads; Motor vehicles; Pavements; Pressure; Shear properties; Skid resistance; Steering; Temperature; Testing; Tire treads; Tires; Vehicle performance; Velocity; Wear
• Old TRIS Terms: Sheer properties
• Subject Areas: Highways; Pavements; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00090645
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: UM-HSRI-PF-75-1-2 Final Rpt.
• Contract Numbers: DOT-HS-031-3-693
• Files: NTIS, TRIS, USDOT
• Created Date: Jun 10 1975 12:00AM