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Treadwear Number UTQGS Information
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”.
Tire Pressures
Actual Weight
Pressure PSI
Single Axle
Pressure Kpa
Single Axle
5300 lb
55psi
379Kpa
5500 lb
58psi
400Kpa
5700 lb
60psi
414Kpa
5900 lb
63psi
434Kpa
6150 lb
65psi
448Kpa
6400 lb
68psi
469Kpa
6600 lb
70psi
483Kpa