See also:

How TSA works
Once swaying has begun, it can be very difficult to stop, which makes it difficult to control the vehicle and trailer. The TSA system continuously monitors the vehicle's movements, particularly ...

Uniform Tire Quality Grading
ALL PASSENGER VEHICLE TIRES MUST CONFORM TO FEDERAL SAFETY REQUIREMENTS IN ADDITION TO THESE GRADES Quality grades can be found, where applicable, on the tire sidewall between the tread shoulder ...

Tire designations
Federal law mandates that tire manufacturers place standardized information on the sidewall of all tires (see the illustration). The following information is listed on the tire sidewall: The tire ...