Consumer information and Reporting safety defects / Uniform tire quality grading standards 13-13
Example 2
For example , if a person weighing 176 lbs ( 80 kg ) now enters the same vehicle ( bringing the number of occupants to two ), the calculations are as follows .
1 . Calculate the total weight .
2 . Calculate the available load capacity .
3 . The total weight now exceeds the capacity weight by 92 lbs ( 42 kg ), so the cargo weight must be reduced by 92 lbs ( 42 kg ) or more .
Uniform tire quality grading standards
S13AC
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 .
– CONTINUED –