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1.6.9.2. 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
inflated properly and not overloaded. Excessive speed, underinflation 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".
1.6.9.3. Additional Information on Light Truck Tires
Please refer to the following diagram.
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.
ST -
An "ST" is an indication the tire is for trailer use only.
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 (lbs) at kPa (psi) Cold
This information indicates the maximum load and tire pressure when the tire is used as a
single.
