TIRES AND WHEELS 2E – 9
Another method is to dismount the tire and rotate it
180 degrees on the rim. Do this only on the tire and
wheel assemblies which are known to be causing a
vibration because this method is just as likely to cause
good assemblies to vibrate.
TIRE AND WHEEL
MATCH-MOUNTING
The tires and wheels are match-mounted at the assem-
bly plant. Match-mounting aligns the radially stiffest part
of the tire, or high spot, to the smallest radius, or low
spot, of the wheel.
The high spot of the tire is originally marked by a red
paint mark or an adhesive label on the outboard side-
wall.
The low spot of the wheel will be at the location of the
valve stem.
Before dismounting a tire from its wheel, scribe a line on
the tire at the valve stem to assure that it is remounted in
the same position.
Replacement tires that are of original equipment quality
will have their high and low spot marked in the same
manner.