ShoreLand'r Powersports Trailer 2008 - Manual (Page 14)

Midwest Industries, Inc. Ida Grove, IA 51445 800.859.3028 www.shorelandr.com
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Page 14 REV B 4/11/2008
UTQGS
(Uniform Tire Quality Grading System)
INFORMATION
TREADWEAR NUMBER
This number indicates the tire’s wear rate. The higher the tread
wear number is, the longer it should take for the tread to wear
down. For example, a tire graded 400 should last twice as long as
a tire graded 200.
TRACTION LETTER
This letter indicates a tire’s ability to stop on wet pavement. A high-
er graded tire should allow you to stop your car on wet roads in a
shorter distance than a tire with a lower grade. Traction is graded
from highest to lowest as “AA”, “A”, “B”, and “C”.
TEMPERATURE LETTER
This letter indicates a tire’s resistance to heat. The temperature
grade is for a tire that is inflated properly and not overloaded. Ex-
cessive speed, under-inflation or excessive loading, either sepa-
rately or in combination, can cause heat build-up and possible tire
failure. From highest to lowest, a tire’s resistance to heat is graded
as “A”, “B”, or “C”.
ADDITIONAL INFORMATION ON LIGHT TRUCK TIRES
Please refer to diagram below.
Tires for light trucks have other markings besides those found on
the side walls of passenger tires.
LT
The “LT” indicates the tire is for light trucks.
MAX. LOAD DUAL kg (lbs.) AT kPa (psi) COLD
This information indicates the maximum load and tire pressure
when the tire is used as a dual, that is, when four tires are put on
each rear axle (a total of six or more tires on the vehicle).
MAX. LOAD SINGLE kg (psi) AT kPa (psi) COLD
This information indicates the maximum load and tire pressure
when the tire is used as a single.
LOAD RANGE
This information identifies the tire’s load-carrying capabilities and
its inflation limits.
SNOW TIRES
In some heavy snow areas, local governments may require true
snow tires, those with very deeply cut tread. These tires should
only be used in pairs or placed on all four wheels. Make sure you
purchase snow tires that are the same size and construction type
as the other tires on your vehicle.
NEXT NUMBER
This three-digit number gives the width in millimeters of the tire
from side wall edge to side wall edge. In general, the larger the
number, the wider the tire.
NEXT NUMBER
This two-digit number, known as the aspect ratio, gives the tire’s
ratio of height to width. Numbers of 70 or lower indicate a short side
wall for improved steering response and better overall handling on
dry pavement.
R
The “R” stands for radial. Radial ply construction of tires has been
the industry standard for the past 20 years. A “D” stands for bias
ply construction.
NEXT NUMBER
This two-digit number is the wheel or rim diameter in inches. If you
change your wheel size, you will have to purchase new tires to
match the new wheel diameter.
U.S. DOT TIRE IDENTIFICTION NUMBER
This begins with the letters “DOT” and indicates that the tire meets
all federal standards. The next two numbers or letters are the
plant code where it was manufactured, and the last four numbers
represent the week and year the tire was built. For example, the
numbers 3197 means the 31st. week of 1997. The other numbers
are marketing codes used at the manufacturer’s discretion. This
information is used to contact consumers if a tire defect requires
a recall.
TIRE PLY COMPOSITION AND MATERIALS USED
The number of plies indicates the number of layers of rubber-coat-
ed fabric in the tire. In general, the greater the number of plies, the
more weight a tire can support. Tire manufacturers also must indi-
cate the materials in the tire, which include steel, nylon, polyester,
and others.
MAXIMUM LOAD RATING
This number indicates the maximum load in kilograms and pounds
that can be carried by the tire.
MAXIMUM PERMISSIBLE INFLATION PRESSURE
The number is the greatest amount of air pressure that should ever
be put in the tire under normal driving conditions.
INFORMATION ON PASSENGER VEHICLE TIRES
Please refer to the diagram below.
The “ST” indicates the tire is a special trailer tire.
The “LT” indicates the tire is a light truck tire.