Cadillac 2007 XLR Owner's Manual page 418

DOT Markings: A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identification Number (TIN),
an alphanumeric designator which can also identify
the tire manufacturer, production plant, brand,
and date of production.
GVWR: Gross Vehicle Weight Rating. See
Loading Your Vehicle on page 354.
GAWR FRT: Gross Axle Weight Rating for the
front axle. See Loading Your Vehicle on page 354.
GAWR RR: Gross Axle Weight Rating for the
rear axle. See Loading Your Vehicle on page 354.
Intended Outboard Sidewall: The side of an
asymmetrical tire, that must always face outward
when mounted on a vehicle.
Kilopascal (kPa): The metric unit for air pressure.
418
Light Truck (LT-Metric) Tire: A tire used on light
duty trucks and some multipurpose passenger
vehicles.
Load Index: An assigned number ranging from 1
to 279 that corresponds to the load carrying
capacity of a tire.
Maximum Inflation Pressure: The maximum air
pressure to which a cold tire may be inflated.
The maximum air pressure is molded onto
the sidewall.
Maximum Load Rating: The load rating for a tire
at the maximum permissible inflation pressure
for that tire.
Maximum Loaded Vehicle Weight: The sum of
curb weight, accessory weight, vehicle capacity
weight, and production options weight.
Normal Occupant Weight: The number of
occupants a vehicle is designed to seat multiplied
by 150 lbs (68 kg). See Loading Your Vehicle
on page 354.