See also:

Treadwear
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would we ...

Odometer
Type A Type B The odometer shows the total distance that the vehicle has been driven. ...

Double trip meter
1) Trip knob This meter displays the two trip meters when the ignition switch is in the “ON” position. The trip meter shows the distance that the vehicle has been driven since you last set it ...