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 ...

Altima in the Market
Though it's subtle, Nissan's redesign of the Altima — its most popular model and the sixth-best-selling car in the U.S. last year — is significant, which is nothing less than what was needed i ...

Octane rating tips
Using unleaded gasoline with an octane rating lower than recommended can cause persistent, heavy “spark knock.” (“Spark knock” is a metallic rapping noise.) If severe, this can lead to eng ...