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TIRE INFORMATION
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.
Maximum Permissible Inflation Pressure
This number is the greatest amount of air pressure that should ever be put in the tire under normal driving conditions.
UTQGS Information
Tread Wear 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. See diagram H-P2 for an
example.
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 inflated properly and not
overloaded. Excessive speed, under inflation 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”.
LT
The “LT” indicates the tire is for light trucks.
Max. Load Single kg,(lbs) 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.
Picture H-P2:
Additional Information on Light Truck Tires
