Re: Proper Tire Inflation?
An heavy H1 at or near GVW [heavy wagon loaded up or armored HMMWV] has the recommend PSI at 35 psi front 40 rear. If you are empty or driving a lighter model [ie. a soft top or have a stripped down wagon] the manual recommends 24 psi front 27 psi rear for unloaded trucks running OEM tires.
It's also on the AM General decal printed on the door jam on the driver side B-pillar.
That being said I run mine at around 30-35 psi. You can run 45 psi if you want, if you have your alignment dead on, you'll get slightly better mileage an tire wear in theory. But the ride will be harsher.
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Kurt Williams
1998 H1 HMCO Model 90 6.5L Turbo Diesel
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