TM 9-2610-200-14
2-9
CHAPTER 2. CARE, MAINTENANCE, AND INSPECTION (Con't)
SECTION I. GENERAL INFORMATION (Con't)
2-13. TIRE ROTATION.
a. PURPOSE.
(1) Rotating tires equalizes wear and extends their service life. The degree of tread wear
or difference in the overall tire circumference provides the determining factor for tire rotation. Tires will
be inspected at the intervals specified in the applicable vehicle TM.
(2) There are two basic tread wear indicators that justify tire rotation. The first indicator
is normal uneven wear. This occurs through routine over-the-road tire scrubbing and power friction
generated through the drive wheels. The second indicator is unusual tread wear. This is identified by a
rapid, uneven rate of wear resulting in reduced steering performance. This condition is usually caused by a
mechanical maladjustment or misalignment of vehicle steering or power drive components and requires
immediate action to determine the cause and to make the necessary repair.
2-14. ROTATION OF BIAS, BELTED BIAS, AND RADIAL TIRES.
When rotating bias, belted bias, and radial tires, the spare tire is also rotated (in accordance with
established measurements). After all of the tires are rotated, the tire that becomes the spare should be
interchanged with the smallest diameter tire on the vehicle, in accordance with proper tire matching .
4x4 (DT), 4x2 (DT) TRUCKS.
BIAS, BIAS BELTED, AND
RADIAL TIRES
4x4 (ST), 4x2 (ST) TRUCKS AND
CARS. BIAS, BIAS BELTED,
AND RADIAL TIRES
6x6 (ST). BIAS, BIAS BELTED,
AND RADIAL TIRES
6x6 (DT). BIAS, BIAS BELTED,
AND RADIAL TIRES
NOTE
INCLUDE SPARE IN ROTATION
PROCESSES IN ACCORDANCE WITH
ESTABLISHED MEASUREMENTS.
