RELATIONSHIP BETWEEN TIRE INFLATION PRESSURE AND MEAN TIRE CONTACT PRESSURE

Contact pressure is important to the design engineer because it determines the intensity of loading. However, it is not as easily monitored as tire inflation pressure. Therefore, a study was made of the relationship between tire inflation pressure and tire contact pressure. Various commercial truck tires were tested in the laboratory under various combinations of load and inflation pressures; the corresponding average contact pressures were determined by the "dirty print" approach. It was found that (a) under normal conditions of wheel load and inflation pressure the average contact pressure between the tire and the road will be less than the tire inflation pressure; (b) tire contact pressure is a function of both inflation pressure and wheel load and is a constant depending on the type of tire; and (c) the relationship between tire inflation pressure and contact pressure lies within a narrow band for the tires tested; for the combination of wheel load and tire pressures recommended by the manufacturers, an average relationship of contact pressure in kilopascals = 0.61 inflation pressure + 145.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1974/523/523-009.pdf
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=RELATIONSHIP+BETWEEN+TIRE+INFLATION+PRESSURE+AND+MEAN+TIRE+CONTACT+PRESSURE&author=D.+van+Vuuren&publication_year=1974
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Surface Properties-Vehicle Interaction. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • van Vuuren, D J
• Conference:
  • 53rd Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1974-1-21 to 1974-1-25
• Publication Date: 1974

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 76-87
• Monograph Title: Skid resistance
• Serial:
  • Transportation Research Record
  • Issue Number: 523
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Inflation; Laboratory tests; Pressure; Tires; Wheel loads
• Uncontrolled Terms: Contact pressure
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00096433
• Record Type: Publication
• ISBN: 0309023688
• Files: TRIS, TRB
• Created Date: Jul 15 1975 12:00AM