See also:

Uniform Tire Quality Grading (UTQG)
For details, refer to “Uniform tire quality grading standards”. ...

Driving when tired or sleepy
When you are tired or sleepy, your reaction time will be delayed and your perception, judgment and attentiveness will be impaired. If you drive when tired or sleepy, your, your passenger ...

P Metric
With the P-Metric system, Section Width is measured in millimeters. To convert millimeters into inches, divide by 25.4. The Aspect Ratio (Section Height divided by Section Width) helps provid ...