Motor Vehicle Tire Safety Regulations

Marginal note:Definitions

• 1 (1) The following definitions apply in these Regulations.

  Act

  Act means the Motor Vehicle Safety Act. (Loi)

  bead

  bead means the portion of a tire that is made of steel wires wrapped or reinforced by plies and that is shaped to fit the rim. (talon)

  bias ply tire

  bias ply tire means a tire in which the ply cords that extend to the beads are laid at alternate angles that are substantially less than 90° to the centreline of the tread. (pneu à carcasse diagonale)

  CMVSS

  CMVSS means Canada Motor Vehicle Safety Standard. (NSVAC)

  FI tire

  FI tire means a tire designed for use only on farm implements that are occasionally driven or drawn on a road. (pneu pour instruments aratoires)

  load rating

  load rating means the maximum load a tire is rated to carry at a given inflation pressure. (charge nominale)

  maximum load rating

  maximum load rating means the load rating of a tire at the maximum permissible inflation pressure for that tire. (limite de charge nominale)

  maximum permissible inflation pressure

  maximum permissible inflation pressure means the maximum cold inflation pressure to which a tire may be inflated. (pression maximale permise de gonflage)

  ply

  ply means a layer of rubber-coated parallel cords. (pli)

  radial ply tire

  radial ply tire means a tire in which the ply cords that extend to the beads are laid at substantially 90° to the centreline of the tread. (pneu à carcasse radiale)

  rim

  rim means a support for a tire or a tire-and-tube assembly on which the beads are seated. (jante)

  sidewall

  sidewall means the portion of a tire that is between the tread and the bead. (flanc)

  ST tire

  ST tire means a tire designed for use only on trailers drawn on a road. (pneu à usage spécial)

  tread

  tread means the portion of a tire that comes into contact with the road. (bande de roulement)

  TSD 109

  TSD 109 means Technical Standards Document No. 109, New Tires and Certain Specialty Tires, as amended from time to time. (DNT 109)

  TSD 119

  TSD 119 means Technical Standards Document No. 119, New Tires for Motor Vehicles With a GVWR of More Than 4 536 kg and Motorcycles, as amended from time to time. (DNT 119)

  TSD 139

  TSD 139 means Technical Standards Document No. 139, New Radial Ply Tires for Motor Vehicles With a GVWR of 4 536 kg or Less, as amended from time to time. (DNT 139)

  T-type temporary-use spare tire

  T-type temporary-use spare tire means a temporary-use spare tire that is designed for use at inflation pressures that are higher than those established for standard and reinforced tires. (pneu de secours de type T à usage temporaire)

• Marginal note:Terms defined in the MVSR

  (2) In these Regulations, GVWR, light-truck tire, motorcycle, passenger car, rim diameter and trailer have the same meaning as in subsection 2(1) of the Motor Vehicle Safety Regulations.

• Marginal note:Terms defined in TSD 109, 119 or 139

  (3) For the purposes of these Regulations, words and expressions used in TSD 109, TSD 119 or TSD 139 and not defined in that technical standards document but defined in either of those other technical standards documents have the same meaning as in that other technical standards document.