See also:

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 ...

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 ...

Underbody
In areas where road salt is used in winter, the underbody must be cleaned regularly. This will prevent dirt and salt from building up and causing the acceleration of corrosion on the underbody ...