446 6-1. Specifications
Tire related termMeaning
Innerliner separation The parting of the innerliner from cord material
in the carcass
Intended outboard
sidewall (a) The sidewall that contains a whitewall,
bears white lettering, or bears manufac-
turer, brand, and/or model name molding
that is higher or deeper than the same
molding on the other sidewall of the tire, or
(b) The outward facing sidewall of an asym- metrical tire that has a particular side that
must always face ou tward when mounted
on a vehicle
Light truck (LT) tire A tire designated by its manufacturer as prima-
rily intended for use on lightweight trucks or
multipurpose passenger vehicles
Load rating The maximum load that a tire is rated to carry
for a given inflation pressure
Maximum load rating The load rating for a tire at the maximum per-
missible inflation pressure for that tire
Maximum permissible
inflation pressure The maximum cold inflation pressure to which
a tire may be inflated
Measuring rim The rim on which a tire is fitted for physical
dimension requirements
Open splice Any parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameter The overall diameter of an inflated new tire
Overall width The linear distance between the exteriors of
the sidewalls of an inflated tire, including eleva-
tions due to labeling, decorations, or protective
bands or ribs
Passenger car tire A tire intended for use on passenger cars, mul-
tipurpose passenger vehicles, and trucks, that
have a gross vehicle weight rating (GVWR) of
10,000 lb. or less.
