Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width.
|
Uniform Tire Quality Grading For example: Treadwear 200 All passenger car tires must conform to Federal Safety Requirements in addition to these grades. |
DOT Tire Quality Grading (U.S. Vehicles)
TreadwearHonda Civic Owners Manual. How the System Activates
The system becomes ready to start searching for lane markings when all the
following conditions are met:
The vehicle is traveling between about 45 and 90 mph (72 and 145
km/h).
The vehicle is on a straight or slightly curved road.
The turn signals are off.
The b ...