Utqgs Information; Additional Information On Light Truck Tires - OHIOSTEEL Utility Trailer Owner's Manual

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.
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.
Next number: This two- or three-digit number is
the tire's load index. It is a measurement of how
much weight each tire can support. You may fi nd
this information in your owner's manual. If not,
contact a local tire dealer. Note: You may not fi nd this
information on all tires because it is not required by
law.
M+S: The "M+S" or "M/S" indicates that the tire has
some mud and snow capability. Most radial tires have
these markings; hence, they have some mud and
snow capability.
Speed Rating: The speed rating denotes the speed
at which a tire is designed to be driven for extended
periods of time.
Note: You may not fi nd this information on all tires
because it is not required by law.
U.S. DOT Tire Identifi cation 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-coated fabric in the tire. In general, the
greater the number of plies, the more weight a tire
can support. Tire manufacturers also must indicate
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.
Tire Safety
Maximum Permissible Infl ation Pressure: This
number is the greatest amount of air pressure that
should ever be put in the tire under normal driving
conditions.
3.5.10.2

UTQGS Information

Treadwear Number: This number indicates the tire's
wear rate. The higher the treadwear 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 higher 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 infl ated properly and not overloaded. Excessive
speed, under infl ation or excessive loading, either
separately 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".
3.5.10.3
Additional Information On Light Truck
Tires
Tires for light trucks have other markings besides
those found on the sidewalls of passenger tires.
LT: The "LT" indicates the tire is for light trucks or
trailers.
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