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.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 76-87
  • Monograph Title: Skid resistance
  • Serial:

Subject/Index Terms

Filing Info

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