Chevrolet 2004 Aveo Owner's Manual page 244

Speed Rating: An alphanumeric code assigned to a
tire indicating the maximum speed at which a tire
can operate.
Traction: The friction between the tire and the road
surface. The amount of grip provided.
Tread: The portion of a tire that comes into contact
with the road.
Treadwear Indicators: Narrow bands, sometimes
called "wear bars," that show across the tread of a tire
when only 2/32 inch of tread remains. See When It
Is Time for New Tires on page 5-61.
Tread Width: The width of the tire's tread.
UTQGS: Uniform Tire Quality Grading Standards,
a tire information system that provides consumers with
ratings for a tire's traction, temperature and treadwear.
Ratings are determined by tire manufacturers using
government testing procedures. The ratings are molded
into the sidewall of the tire. See Uniform Tire Quality
Grading on page 5-63.
5-58
Vehicle Capacity Weight: The number of designated
seating positions multiplied by 150 pounds (68 kg)
plus the rated cargo load. See Loading Your Vehicle
on page 4-32.
Vehicle Maximum Load on the Tire: Load on an
individual tire due to curb weight, accessory weight,
occupant weight and cargo weight.
Vehicle Placard: A label permanently attached to a
vehicle showing original equipment tire size and
the recommended cold inflation pressure. See Loading
Your Vehicle on page 4-32.