M1031 HMMWV tire pressure

[camp9]

I recently put the bias HMMWV tires on my M1031, and pulling a trailer I notice some sway. Side walls says 35psi. I know those tires arrn't rated for that truck, but wondering what you guys that have switched over what psi your running at with out wrecking the tire?

Camp

 

[Westech]

its a bias ply... there not going to act like radials.
Have you looked on the side wall of the tire to see what the max pressure is for that tire?

 

[camp9]

I know, says 32 to 35 on mine.

 

[12vctd]

in the hummvees its 20 psi for front and 22 psi for the rear. Bias ply tires sway alot more. They have alot softer sidewall. I would not un them over the max psi stated on the side wall. What rims are you using? reason I ask is the older h1 beadlocks wont hold over 30 psi safely. Might want to look for a set of the 37's radials if your towing

 

[camp9]

Yep, 37" radials are on the list, so until I get some I'll run these. It's not like it sways all over the place, but when your use to trucks running rock solid down the road, thought I'd pose the question and see what others were doing. Thanks all,

Camp

 

[Bob H]

I think I run 25psi in mine.
What rims you running?
mine are on the stock 6 7/8" wide M880 rims, a little narrow as the recommended width is like 8 1/2.
I'd say mine likes to "follow the road" due to being on narrow rims, but I have not felt sway when trailering.
6200 lbs of M886 on an 1800 lb trailer is as heavy as I've towed with them. ( and the 318 gasser was not impressive in the hills)

Certainly not an expert here, but the bias ply sidewalls are generally stiffer than radials

 

[camp9]

I've got the 8", 16.5 chevy rims, not the HMMWV rims, so pretty similar to what you have.