Uniform tire quality grading standards
This information indicates the relative performance of passenger car tires in the area of treadwear, traction, and temperature resistance.
This is to aid the consumer in making an informed choice in the purchase of tires.
Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The quality grades apply to new pneumatic tires for use on passenger cars. However, they do not apply to deep tread, winter type snow tires, space-saver or temporary use spare tires, tires with nominal rim diameters of 12 inches or less, or to some limited production tires.
All passenger car tires must conform to Federal Safety Requirements in addition to these grades.
See also:
Other markings
The following makings are also placed on the sidewall.
Maximum permissible inflation pressure
The maximum cold inflation pressure to which this tire may be inflated. For example,
“350 kPa (51 PSI) ...
Temporary spare tire
WARNING
● Never tow a trailer when the temporary spare tire is used. The temporary spare
tire is not designed to sustain the towing load. Use of the temporary spare tire
when towing can res ...
Charge warning light
If this light illuminates when the engine is running, it may indicate that the
charging system is not working properly.
If the light illuminates while driving or does not turn off after the engin ...
