See also:

Hitch ball
Choose a hitch ball of the proper size and weight rating for your trailer: - The required hitch ball size is stamped on most trailer couplers. Most hitch balls also have the size printed on to ...

Uniform tire quality grading
DOT (Department of Transportation) Quality Grades: All passenger car tires must conform to federal safety requirements in addition to these grades. Quality grades can be found where applicable ...

Speedometer
Speedometer The speedometer indicates vehicle speed in miles per hour (MPH) or kilometers per hour (km/h). ...