MAINTENANCE AN D ADJUSTMENT 169
So it is false economy and unsafe to
use the tires until they are bald.
Tire Wear Inspection
Measure the depth of the tread with
a depth gauge, and replace any tire
that has worn down to th e minimu m
allowable tread depth.
A. Tire Depth Gauge
Minimum Tread Dep th
Under 130 k m/h
Over 130 km/h
Visually inspect the tire for cracks
and cuts, replacing the tire in case of
bad damage. Swelling or high spots
indicate internal damage, requiring