WHEELS AND TIRES.
10-11. TIRE AND TUBE MAINTENANCE (M915) (Continued).
Mismatched tires will make truck handle
poorly and may cause accidents. All tires
on an axle should have the same diameter,
1/8 inch (3.2 mm). When replacing a
tire, measure it and the other tires on the
axle to be sure that the distances from top
to bottom do not vary by more than 1/4
inch (6.4 mm). Use a depth gage to