See also:

Overview of Tire Quality Grading Standards
The Uniform Tire Quality Grading is a U.S. Government requirement. Their purpose is to provide drivers with consistent and reliable information regarding tire performance. Tire manufacturers are ...

2009 Mercedes-Benz CL-Class Review
Sometimes, being the only car of a particular type or price can put you in a lonely place — lonely enough that automakers usually avoid it, preferring to make their own copy of what everyone else ...

Tire tread
WARNING Although the applicable federal motor vehicle safety laws consider a tire to be worn when the tread wear indicators (TWI) become visible at approximately 1/16 in (1.6 mm), we recomm ...