PS Magazine - TB 43-PS-696

PS, The Preventative Maintenance Monthly

ISSUE 696

NOVEMBER 2010
PS Magazine - TB 43-PS-696 - Page 8 of 33
12
PS 696
NOV 10
Before
adjusting tire pressure, make sure you verify the tire and wheel rating.
To help you out, wheel ratings are stamped on the outer rim. Never infate to more
pressure than what’s identiFed in tables 1-15 and 1-15.1 in the operator’s manual ±or
standard conFguration. Or re±er to the GTA SMART card ±or ²rag kits 5, 6, and 7
±ound on AKO:
H
ere’s a trivia question for all of you
Jeopardy!
±ans: The newest tire available ±or
use on up-armored HMMWVs. Time’s up!
Did you answer, “What is the load range E tire?” Then you’re exactly right! This
tire helps bear heavier vehicle weights and payloads.
Don’t Mix Tire Load Ranges
The load range E (L/R E) tire and wheel assembly, NSN 2530-01-563-8620, are
24-bolt tandem pattern or 20-bolt wheel assemblies with a rated load capacity o±
4,540 pounds. The L/R E can handle cold tire pressures o± up to 65 psi and uses tire,
The basic HMMWV tire and wheel assembly, NSN 2530-01-558-2138, is load
range D (L/R D). It mounts on 12-bolt or 24-bolt evenly spaced wheel assemblies
and has a rated load capacity o± 3,850 pounds. It can handle cold tire pressures o± up
to 50 psi, and uses tire, NSN 2530-01-493-5859.
The L/R E assembly can handle more tire pressure and greater load capacity than
the L/R D, so
don’t
mix them on the same vehicle, including the spare. Mixing them
is not sa±e and can lead to wheel ±ailure or problems handling the HMMWV.
Keep Tires on Their Rated Wheels
Also,
never
install an L/R E
tire
on an L/R D
wheel assembly
. Don’t install an L/R
D tire on an L/R E wheel assembly either. Again,
no mixing!
A HMMWV tire and wheel assembly re±erence guide is available online to help
with this. Go to:
TACOM LCMC’s GPA 09-013 introduced L/R E tires. That message is online at
this link:
Michelin BF Goodrich Baja T/A Tire (Baja)
Goodyear Wrangler MT/R Tire (MT/R)
Up-Armored
HMMWVs…
Load
Range E
Tire Talk
Load range D valve hole
Load range E valve hole
Note different
shaped holes
Shoulder
tread
pattern
Tire name
and company
markings
brings
either
the
goodyear
®
or michelin
®
load range E tire!
696.12-13.indd
1-2
9/27/10
10:57 AM
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