MAINTENANCE AND ADJUSTMENT
that 90% of all tire failures occur during
the last 10% of tread life (90% worn).
So it is false economy and unsafe to
use the tires until they are bald.
In accordance with the Periodic
Maintenance Chart, measure the
depth of the tread with a depth
gauge, and replace any tire that has
worn down to the minimum allowable
A. Tire Depth Gauge
Minimum Tread Depth
Under 130 km/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
Remove any imbedded stones or
other foreign particles from the tread.
Have the wheel balance inspected
whenever a new tire is installed.