I happened to have PS magazine on my desk for an article on HMVEE tops.
From the October issue , pgs 6-7 It can also be found online at
http://www.logsa.army.mil/psmag/psonline.htm
" Three different tires are approved for use on HEMTT vehicles. Two of them
work well with each other, but the other one is a loner.
Here are the details: When you order a replacement tire using NSN
2610-01-126-1576 from Note that the XZL is used on the M1070 heavy
equipment transporter and the M1074/M1075 palletized load-ing system
tractor. Just because the XZL can be used on the HEMTT does not mean that
the XL or AT2A can be used on the HET or PLS. They cannot! The XL is not
large enough for either vehicle, and the AT2A did not pass the use test for
either truck. All three tires have non-directional tread, so it does not
matter how they are mounted on the wheels. The tread can point forward or
backward, even though the XL tread appears to be di-rectional.
Some or all of these tires may rub against the HEMTT s front axle
equal-izer beam during a hard left or hard right turn. Eyeball the beam for
evi-dence of rubbing. There must be at least 1 inch of clearance between
the tread and the beam when the wheel is turned as far as possible to the
left and right. If you find evidence of rubbing, re-port it. Your DS shop
must adjust the steering stop bolts to the correct clear-ance. The
adjustment information is found in TM 9-2320-279-34-2. DS should note that
TACOM has increased the clearance from 3 /4 inch to 1 inch since the TM was
printed. TM 9-2320-279-24P, you get either a Michelin XL (16.00R20, load
range J) or a Goodyear AT2A (16.00R20, load range M). Both tires can be
used on the same truck without damage to the tires or the truck. It s a
common practice to use all the same tires on a single axle, but it is not
necessary. Both tires were tested together and are compatible on the same
axle.
Here s the word from Para 2-7 of TM 9-2610-200-14, Care, Maintenance,
Repair, and Inspection of Pneu-matic Tires and Inner Tubes: "Minor
variations of tread designs, as encoun-tered from one manufacturer to
another, may be used providing the sizes and tire constructions (bias or
radial) are compatible." There is another NSN shown in the HEMTT parts TM:
NSN 2610-01-334-2694. This tire, a Michelin XZL (16.00R20, load range M),
can be used on the truck only in a full set of eight tires. It cannot be
mixed with the other tires, however, because its tread is not compatible. "
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