Vehicle fuel consumption is affected by tyre rolling resistance, but the reduction in fuel consumption is only about 20 per cent of the reduction in rolling resistance. Tyre rolling resistance can be considered as comprising both a speed independent and a speed dependent portion, with the speed independent portion being the significant part under normal vehicle operating conditions. The tyre rolling resistance can be reduced by changes in operating conditions, such as inflation pressure and vehicle operating cycles, and also through tyre design modifications. The radial ply tyre would currently appear to offer the best design features for minimum tyre energy losses, and although further significant reductions in tyre rolling resistance are possible with this construction, any large reduction is likely to be at the expense of other tyre properties. However, there is still room for some improvement whilst maintaining current performance levels in these other properties, the actual order of this improvement being somewhat dependent on the current position of individual manufacturer's tyres. (TRRL)

  • Supplemental Notes:
    • Fuel Economy. Society of Automotive Engineers, Australasia Seminar, 29th May 1980
  • Corporate Authors:

    Society of Automotive Engineers

    191 Royal Parade
    Parkville, Victoria 3052,   Australia 
  • Authors:
    • Moore, K J
    • HENRY, A
  • Publication Date: 1980-5

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 13 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00325655
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, TRIS, ATRI
  • Created Date: Oct 28 1981 12:00AM