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

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